Control method of power supply system

Abstract

The present specification relates to a power supply device, a power supply system and a control method for a power supply system that are capable of supplying power uninterruptedly, and to a power supply device, a power supply system and a control method for a power supply system that are provided with a circuit breaker for limiting connection to a power bus, and open and close the circuit breaker according to various situations occurring in the system to control the reception and supply of power.

Description

Technical Field

[0001] The present invention relates to a power supply device capable of supplying power uninterruptedly, a power supply system and a control method of the power supply system. Background Art

[0002] The background technology of the present invention relates to a system including a plurality of power supply devices.

[0003] A system in which a plurality of power supply devices supply power to each load may be connected in common through a DC bus line. As described above, in the case of connection to a common bus line, there is an advantage that power reception / supply with adjacent power supply devices can be achieved through the DC bus line. However, in the case of configuring the system in the manner described above, there are limitations such as stability problems of the system, difficulty in controlling reception / supply of power, and lack of countermeasures in the event of an accident.

[0004] Since there are a large number of power supply devices with complex structures, the system operation cannot be performed stably when the interchangeability between the devices is poor. In addition, in the case where the load supplied with power by each device is an important load that always needs to be supplied with power, it is necessary to set up a separate UPS device to deal with abnormal conditions, and in the case of setting up a UPS device, the structure of the system becomes more complicated, and the installation of the UPS device itself is not easy due to structural / design limitations. Moreover, as the structure becomes more and more complicated, the control of each device and system will inevitably become more complicated, and the risk of failure and accidents will increase. As a result, since it is difficult to provide a stable and reliable power supply, the operation of the load will inevitably become unstable, and there is a problem that appropriate operation response cannot be made according to the occurrence of various accidents. Summary of the invention

[0005] Problems to be solved by the invention

[0006] An object of the present invention disclosed in this specification is to improve the limitations of the conventional technology as described above.

[0007] That is, an object of the present specification is to provide a control method for a power supply system that can improve the limitations of the prior art.

[0008] Specifically, a control method of a power supply system is provided, wherein power is received and supplied between a plurality of power modules provided in the system, so that each of the plurality of power modules can perform a UPS function between each other.

[0009] In addition, a control method of a power supply system is provided, which can effectively maintain power supply to a load under various abnormal conditions.

[0010] Furthermore, a control method for a power supply system is provided, which can take stable and appropriate countermeasures for receiving / supplying power according to various abnormal situations.

[0011] Technical solutions to the problem

[0012] In the control method of the power supply system of the present invention for solving the above-mentioned problems, the solution is to set a circuit breaker for limiting connection on a power bus connected to a plurality of power supply devices, thereby opening and closing the circuit breaker according to various situations occurring in the system to control the reception / supply of power.

[0013] That is, according to the control method of the power supply system of the present invention, its technical feature is to set circuit breakers corresponding to multiple power supply devices, and control the circuit breakers to receive / supply power through a power bus, thereby performing UPS functions between the multiple power supply devices.

[0014] The technical features described above can be applied and implemented in a control method for a power supply system. This specification provides an embodiment of a control method for a power supply system having the technical features described above.

[0015] In one embodiment of the power supply system of the present invention, which uses the above-mentioned technical features as solutions to the problems, the system includes: a plurality of power boards, which convert power received from each of a plurality of power supply sources into DC power, and convert the DC power into a driving power for driving a load, so as to supply the driving power to the load; a bus line, which is connected to a power supply terminal of each of the plurality of power boards for inputting and outputting the DC power, so as to connect the DC power converted in the plurality of power boards; a plurality of circuit breakers, which are arranged between each of the power supply terminals and the bus line, and limit the connection between the power supply terminals and the bus line; and a control device, which monitors and controls the plurality of power boards, the control device determines a supply target power board among the plurality of power boards that supplies the DC power to an abnormal power board where an abnormality occurs, closes one or more circuit breakers among the plurality of circuit breakers connected to the abnormal power board and the supply target power board, and controls to supply the DC power from the supply target power board to the abnormal power board through the bus line.

[0016] In one embodiment, the control device can determine the abnormal power board, close one or more circuit breakers connected to the abnormal power board and the supply target power board, and control the DC power supply from the supply target power board to the abnormal power board through the bus line.

[0017] In one embodiment, the plurality of power supply sources may include: a first alternating current power source and a second alternating current power source supplying AC power; and a battery power source storing DC power, wherein when the power supply of the first alternating current power source and the second alternating current power source is interrupted, the stored power is supplied to the plurality of power strips while the power supply is switched and restored.

[0018] In one embodiment, after the power supply is interrupted, the battery power supply may uninterruptedly supply the stored power to the plurality of power strips until the power supply is switched and restored.

[0019] In one embodiment, each of the plurality of power boards may include: a plurality of first power conversion devices, which convert power received from each of the plurality of power supply sources into DC power; one or more second power conversion devices, which convert the DC power into a driving power for driving a load, so as to supply the driving power to the load; a first circuit breaker, which is arranged between a power supply terminal to which the outputs of the plurality of first power conversion devices are commonly connected and a bus line connected to the power supply terminal, so as to limit the connection between the power supply terminal and the bus line; a second circuit breaker, which is arranged between a second output terminal which is the output of any one of the plurality of first power conversion devices and the bus line connected to the second output terminal, so as to limit the connection between the second output terminal and the bus line; and a control unit, which controls the action of each of the plurality of first power conversion devices and one or more of the second power conversion devices and the opening and closing of the first circuit breaker and the second circuit breaker, respectively, according to the state of the DC power or the driving power.

[0020] In one embodiment, each of the plurality of power boards may include: a plurality of first power conversion devices, which convert power received from each of the plurality of power supply sources into DC power; one or more second power conversion devices, which convert the DC power into a driving power for driving a load so as to supply the driving power to the load; and a control unit, which controls the operation of each of the plurality of first power conversion devices and one or more second power conversion devices according to the state of the DC power or the driving power.

[0021] In one embodiment, each of the plurality of power boards can transmit the DC power to one or more of the second power conversion devices by operating a first conversion device that receives power from the first AC power source.

[0022] In one embodiment, when an abnormality occurs in any one or more of the first AC power supply and the first conversion device, each of the plurality of power boards can stop the operation of the first conversion device and operate the third conversion device that receives power from the second AC power supply to transmit the DC power to one or more of the second power conversion devices.

[0023] In one embodiment, when an abnormality occurs in any one or more of the second AC power supply and the third conversion device, each of the plurality of power boards can stop the operation of the third conversion device, receive the DC power from the supply target power board and transmit the DC power to one or more of the second power conversion devices, or can stop the operation of the third conversion device, operate the second conversion device that receives power from the battery power supply to transmit the DC power to one or more of the second power conversion devices.

[0024] In one embodiment, when the DC power is being supplied from the supply target power board to the abnormality occurring power board through the bus line, each of the plurality of power boards can activate the second conversion device to transmit the DC power to one or more second power conversion devices.

[0025] In one embodiment, the bus line may be formed as a circuit by a DC current flowing through the DC power source.

[0026] In one embodiment, the plurality of circuit breakers may include: a plurality of first circuit breakers, arranged on a circuit connecting each power supply terminal commonly connected to the output of the DC power supply in the output terminal of each power supply board in the plurality of power supply boards and the bus line, so as to limit the connection of the power supply terminal to the bus line; and a plurality of second circuit breakers, arranged on a circuit connecting each second output terminal separated from the power supply terminal and the bus line, so as to limit the connection of the second output terminal to the bus line.

[0027] In one embodiment, the control device can open a plurality of the first circuit breakers and the second circuit breakers under normal circumstances, and when the supply target power board supplies the DC power to the abnormal power board, the first circuit breaker of the abnormal power board and the second circuit breaker of the supply target power board can be closed.

[0028] In one embodiment, in the bus line, a plurality of DC circuits through which the DC power source flows may be connected in a grid structure.

[0029] In one embodiment, each of the plurality of circuit breakers may be provided on each circuit connecting the power terminals between the plurality of power boards in the bus line to limit the connection between each of the plurality of power boards.

[0030] In one embodiment, the control device can open a plurality of the circuit breakers under normal circumstances, and when the supply target power board supplies the DC power to the abnormality occurring power board, the control device can close the circuit breakers among the plurality of the circuit breakers connected to the abnormality occurring power board and the supply target power board.

[0031] In one embodiment, the control device may determine the supply target power board from the remaining power boards except the power board where the abnormality occurs.

[0032] In one embodiment, the control device may determine the supply order of the remaining power boards according to a preset judgment standard, and then determine the supply target power board according to the supply order.

[0033] In one embodiment, the judgment standard may be a standard for judging the supply sequence according to one or more of an action state of each of the remaining power boards and a position where each of the remaining power boards is configured.

[0034] In one embodiment, the control device may determine the supply sequence according to the status of the plurality of power supply sources of each of the remaining power boards.

[0035] In one embodiment, the control device may determine the power status of the battery power in the plurality of the power supply sources of each of the remaining power boards, so as to determine the supply sequence according to the determined power status.

[0036] In one embodiment, the power supply status may be a status regarding the usable capacity of the battery power supply.

[0037] In one embodiment, the control device may determine the supply sequence according to the order of the available capacity of each of the remaining power boards.

[0038] In one embodiment, the control device may determine the supply sequence according to the proximity of the position of each of the remaining power boards to the power board where the abnormality occurred.

[0039] In one embodiment, the control device may determine the supply sequence according to the proximity of each of the remaining power boards to the power board where the abnormality occurred.

[0040] In one embodiment, when an abnormality occurs in the supply target power board that is supplying the DC power to the abnormality occurring power board, the control device can determine the supply replacement power board to replace the supply target power board based on the supply order, replace the supply target power board with the supply replacement power board, and control to supply the DC power from the supply replacement power board to the abnormality occurring power board.

[0041] In one embodiment, when there are a plurality of abnormal power boards, the control device can determine each of the plurality of supply target power boards corresponding to each of the plurality of abnormal power boards, close a plurality of circuit breakers connected to the plurality of abnormal power boards and the plurality of supply target power boards, and control to supply the DC power from each of the plurality of supply target power boards to the plurality of abnormal power boards through the bus line.

[0042] In addition, in another embodiment of the control method of the power supply system of the present invention which uses the above-mentioned technical features as a solution to the problem, the power supply system includes: a plurality of power boards, which convert the power received from each of the plurality of power supply sources into DC power, and convert the DC power into a driving power for driving a load to supply the driving power to the load; a bus line, which is connected to the power supply terminal of each of the plurality of power boards for inputting and outputting the DC power to connect the DC power converted in the plurality of power boards; and a plurality of circuit breakers, which are arranged between each of the power terminals and the bus line to limit the connection between the power terminals and the bus line, and the control method of the power supply system includes: when an abnormality occurs in one or more of the plurality of power boards, a step of determining a supply target power board to supply the DC power to the abnormality-occurring power board; a step of closing one or more circuit breakers among the plurality of circuit breakers connected to the abnormality-occurring power board and the supply target power board; and a step of the supply target power board supplying the DC power to the abnormality-occurring power board through the bus line.

[0043] In one embodiment, the method may further include: during the period of controlling the operation of each of the plurality of power boards according to the power supply status of each of the plurality of power boards, determining a power board where an abnormality occurs among the plurality of power boards.

[0044] In one embodiment, in the step of determining an abnormal power board among the plurality of power boards, the power board in which the power supply of the first AC power source and the second AC power source among the plurality of power boards is abnormal is determined as the abnormal power board.

[0045] In one embodiment, in the judging step, the supply order may be judged among the power boards other than the abnormality-occurring power board, and the supply target power board may be judged based on the supply order.

[0046] In one embodiment, in the judging step, the supply sequence may be judged according to one or more of a state of each of the remaining power boards and a position where each of the remaining power boards is configured.

[0047] In one embodiment, in the judging step, the supply sequence may be judged according to the states of the plurality of power supply sources of each of the remaining power boards.

[0048] In one embodiment, in the judging step, the state of the available capacity of the battery power in the plurality of the power supply sources of each of the remaining power boards may be judged, so as to judge the supply sequence according to the judged power state.

[0049] In one embodiment, in the judging step, the supply sequence may be judged according to the order of the available capacity of each of the remaining power boards.

[0050] In one embodiment, in the judging step, the supply sequence may be judged according to the proximity of the position of each of the remaining power boards to the power board where the abnormality occurred.

[0051] In one embodiment, in the judging step, the supply sequence may be judged according to the proximity of each of the remaining power boards to the power board where the abnormality occurred.

[0052] In one embodiment, the method may further include transmitting information on the reception / supply of the DC power to the abnormality-occurring power board and the supply target power board, respectively.

[0053] In one embodiment, the method may further include the step of replacing the target power board when an abnormality occurs in the target power board that is supplying the DC power to the abnormality-occurring power board.

[0054] In one embodiment, the replacement step may include: the step of determining a supply replacement power board to replace the supply object power board according to the supply order; the step of opening a circuit breaker connected to the supply object power board and closing a circuit breaker connected to the abnormality occurring power board and the supply replacement power board; and the step of the supply replacement power board supplying the DC power to the abnormality occurring power board through the bus line.

[0055] In one embodiment, the method may further include: a step of detecting the status of any one or more of the power boards among the plurality of the power boards; a step of comparing the detection result with a preset status standard; and a step of judging, based on the comparison result, a power board among the plurality of the power boards corresponding to the status standard as the abnormal power board.

[0056] In addition, in another embodiment of the control method of the power supply system of the present invention which uses the above-mentioned technical features as a solution to the problem, the power supply system includes: a plurality of power supplies, which convert the power received from each of the plurality of power supply sources into a DC power supply, and convert the DC power supply into a driving power supply for driving a load to supply the driving power to the load, the plurality of power supply sources including a first alternating current power supply and a second alternating current power supply for supplying AC power and a battery power supply for storing DC power; a bus line connected to a power supply terminal for inputting the DC power supply in each of the plurality of power boards, and a second output terminal separated from the power supply terminal and outputting the DC power supply, so as to connect the DC power converted in the plurality of power boards; a plurality of first circuit breakers, arranged between each of the power supply terminals and the bus line, so as to limit the power supply. a connection between the source end and the bus line; and a plurality of second circuit breakers, arranged between each of the second output ends and the bus line to limit the connection between the second output end and the bus line, the control method of the power supply system comprises: a step of controlling the operation of each of the plurality of power boards according to the power supply status of each of the plurality of power boards; a step of judging an abnormal power board among the plurality of power boards; a step of transmitting information about the reception / supply of the DC power to the judged abnormal power board and a supply target power board that supplies the DC power to the abnormal power board, respectively; a step of closing the first circuit breaker of the abnormal power board and the second circuit breaker of the supply target power board; and a step of the supply target power board supplying the DC power to the abnormal power board through the bus line.

[0057] In one embodiment, when power supply of the first AC power source and the second AC power source is interrupted, the battery power source may supply stored power to the plurality of power strips while the power supply is switched and restored.

[0058] In one embodiment, the plurality of power supply sources may further include an emergency power supply, which supplies emergency generated power to the load when the power supply of the first AC power supply, the second AC power supply and the battery power supply is interrupted.

[0059] In one embodiment, in the step of controlling the operation of each of the plurality of power boards, when the states of the first AC power supply and the first conversion device that receives power from the first AC power supply correspond to a normal state, power can be received from the first AC power supply and the DC power can be converted by the first conversion device.

[0060] In one embodiment, in the step of controlling the operation of each of the plurality of power boards, when an abnormality occurs in one or more of the first AC power supply and the first conversion device and the power supply is interrupted, the first AC power supply and the first conversion device can be switched to the second AC power supply and a second conversion device that receives power from the second AC power supply.

[0061] In one embodiment, in the step of controlling the operation of each of the plurality of power boards, when switching to the second AC power supply and the second conversion device, during the period of switching to the second AC power supply and the second conversion device, power can be received from the battery power supply and the DC power can be converted by the second conversion device that receives power from the battery power supply.

[0062] In one embodiment, in the step of controlling the operation of each of the plurality of power strips, when an abnormality occurs in one or more of the first AC power supply and the first conversion device while the second circuit breaker is in a closed state, power can be received from the battery power supply, and the DC power supply can be converted by a second conversion device that receives power from the battery power supply until power supply is restored.

[0063] In one embodiment, the step of determining which power board among the plurality of power boards has an abnormality may include: the step of detecting one or more states of each of the plurality of power boards; the step of comparing the detection result with a preset state standard; and the step of determining, based on the comparison result, which power board among the plurality of power boards corresponds to the state standard as the abnormality power board.

[0064] In one embodiment, in the detecting step, the status of one or more of the plurality of power supply sources, the plurality of first conversion devices included in the plurality of power boards, the DC power supplies of the plurality of power boards, and the driving power supplies can be detected, and in the comparing step, the detection result can be compared with the status standard including the abnormal standard regarding the status of one or more of the plurality of power supply sources, the plurality of first conversion devices, the DC power supplies, and the driving power supplies.

[0065] In one embodiment, in the step of determining the abnormal power board among the plurality of power boards, the power board in which the power supply of the first AC power supply and the second AC power supply among the plurality of power boards is abnormal can be determined as the abnormal power board.

[0066] In one embodiment, the abnormality-occurring power board may be a power board on which the power supply of the first AC power source and the second AC power source is abnormal but the power supply of the battery power source can be realized.

[0067] In one embodiment, the judging step may include: a step of receiving abnormality occurrence information from a plurality of the power boards; and a step of judging the power board that sent the abnormality occurrence information as the abnormality occurrence power board.

[0068] In one embodiment, the transmitting step may include: transmitting reception request information regarding reception of the DC power to the abnormality occurring power board; and transmitting supply request information regarding supply of the DC power to the supply target power board.

[0069] In one embodiment, in the supplying step, the abnormality-occurring power board may receive the DC power from the bus line through the power supply terminal, and the supply target power board may supply the DC power to the bus line from the second output terminal.

[0070] In one embodiment, the supply target power board may convert the power received from the second AC power source into the DC power and supply it to the bus line.

[0071] In one embodiment, in the supplying step, when the power supply of the first AC power supply of the supply object power board is interrupted, the supply object power board can be switched to another power board to supply the DC power from the switched power board to the abnormality occurring power board.

[0072] In one embodiment, the supply target power board can receive power from the battery power supply and convert it into the DC power supply after the power supply of the first AC power supply is interrupted, during the period when the supply target power board is disconnected from the bus line and the power supply of the second AC power supply is restored.

[0073] In one embodiment, the other power strip may convert the power received from the second AC power source into the DC power and supply it to the bus line.

[0074] In one embodiment, in the supply step, when the supply object power board is switched to another power board, the second circuit breaker of the supply object power board can be opened to disconnect the supply object power board from the bus line, and the second circuit breaker of the other power board can be closed to connect the other power board to the bus line.

[0075] In one embodiment, in the supply step, when the supply object power board is switched to the other power board, the second circuit breaker of the supply object power board can be opened to disconnect the supply object power board from the bus line, and the second circuit breaker of the other power board can be closed to connect the other power board with the bus line.

[0076] In one embodiment, when, in the step of determining an abnormal power board among a plurality of the power boards, it is determined that the abnormal power boards are plural, each of the plurality of abnormal power boards can receive power from the battery power supply and convert it into the DC power supply during the period when the first AC power supply or the second AC power supply is restored.

[0077] In one embodiment, when, in the step of determining an abnormal power board among a plurality of the power boards, it is determined that the battery power of the abnormal power board is abnormal, the power board with the abnormal battery power can supply power to the load by supplying an emergency power supply of an emergency generating power source to the load during the period when the first AC power supply or the second AC power supply is restored.

[0078] In addition, in another embodiment of the control method of the power supply system of the present invention which uses the above-mentioned technical features as a solution to the problem, the power supply system includes: a plurality of power boards, which convert the power received from each of the plurality of power supply sources into a DC power supply, and convert the DC power supply into a driving power supply for driving a load, so as to supply the driving power supply to the load; a bus line, which is connected to a power supply terminal of each of the plurality of power boards for inputting the DC power supply, and a second output terminal which is separated from the power supply terminal and outputs the DC power supply, so as to connect the DC power converted in the plurality of power boards; a plurality of first circuit breakers, which are arranged between each of the power supply terminals and the bus line, so as to limit the connection between the power supply terminal and the bus line. line connection; a plurality of second circuit breakers, arranged between each of the second output terminals and the bus line to limit the connection of the second output terminals to the bus line; and a control device, monitoring and controlling a plurality of the power boards, the control method of the power supply system comprises: a step of judging an abnormal power board among a plurality of the power boards; a step of transmitting information about the reception / supply of the DC power to the judged abnormal power board and a supply target power board that supplies the DC power to the abnormal power board, respectively; a step of closing a first circuit breaker of the abnormal power board and a second circuit breaker of the supply target power board; and a step of the supply target power board supplying the DC power to the abnormal power board through the bus line.

[0079] In one embodiment, the judgment step may include: a step of detecting the status of any one or more of each of the plurality of power boards; a step of comparing the detection result with a preset status standard; and based on the comparison result, a step of judging any one or more of the plurality of power boards corresponding to the status standard as the abnormal power board.

[0080] In one embodiment, in the detecting step, the status of any one or more of the plurality of power supply sources, the plurality of first power conversion devices included in the plurality of power boards, the DC power supplies of the plurality of power boards, and the driving power supplies can be detected, and in the comparing step, the detection result can be compared with the status standard including the abnormal standard regarding the status of any one or more of the plurality of power supply sources, the plurality of first power conversion devices, the DC power supplies, and the driving power supplies.

[0081] In one embodiment, the judging step may include: a step of receiving abnormality occurrence information from a plurality of the power boards; and a step of judging the power board that sent the abnormality occurrence information as the abnormality occurrence power board.

[0082] In one embodiment, the transmitting step may include: transmitting reception request information regarding reception of the DC power to the abnormality occurring power board; and transmitting supply request information regarding supply of the DC power to the supply target power board.

[0083] In one embodiment, in the supplying step, the abnormality-occurring power board may receive the DC power from the bus line through the power supply terminal, and the supply target power board may supply the DC power to the bus line from the second output terminal.

[0084] The power supply system and the control method of the power supply system of the present invention as described above can be applied to a power supply module that supplies / uses a DC power supply, a power supply system, a control method of a power supply system, and an application method of a power supply system. In particular, it can be usefully applied to a DC UPS module and a power supply system having the module. However, the technology disclosed in this specification is not limited to this, and can also be applied to all power supply devices, power supply devices, power control devices, power supply systems, power systems, power control systems, workshop systems, workshop control systems, workshop control methods, energy storage systems, control methods or application methods of energy storage systems, motor control panels that control multiple motor loads, motor control systems, motor operation systems, etc., to which the technical ideas of the technology can be applied.

[0085] Effects of the Invention

[0086] The control method of the power supply system of the present invention controls the reception / supply of power through the power bus by controlling the circuit breaker of each of the multiple power supply devices connected to the power bus, thereby having the effect of being able to perform UPS functions between multiple power supply devices.

[0087] This has the effect of maintaining power supply to the load without interruption even if various abnormalities occur in the system.

[0088] That is, the control method of the power supply system of the present invention has the effect of being able to respond appropriately and stably to various abnormal situations occurring in the system.

[0089] In addition, the control method of the power supply system of the present invention controls the circuit breaker of each of the multiple power supply devices connected to the power bus according to the situation that occurs, so as to control the reception / supply of power through the power bus, thereby achieving the effect of being able to utilize the minimum units to achieve effective operation.

[0090] In addition, the control method of the power supply system of the present invention has the effect of increasing the stability, reliability and practicality of large-capacity system operation.

[0091] As a result, the control method of the power supply system of the present invention solves the above-mentioned problems, and has the effect of being able to improve the limitations of the conventional technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Figure 1a and Figure 1b Configuration diagram 1 and configuration diagram 2 respectively show the configuration of an embodiment of a power supply system of the present invention.

[0093] Figure 2a It is shown that the Figure 1a The structure diagram of the power supply module in the power supply system shown in FIG.

[0094] Figure 2b It is shown that the Figure 1b The structure diagram of the power supply module in the power supply system shown in FIG.

[0095] Figure 3 FIG. 1 is an exemplary diagram showing a specific example of an embodiment of a power supply system of the present invention.

[0096] Figure 4 FIG. 2 is an exemplary diagram showing a specific example of an embodiment of the power supply system of the present invention.

[0097] Figure 5 This is an example showing a specific example of an embodiment of the power supply system of the present invention. Figure 3 .

[0098] Figure 6 This is an example showing a specific example of an embodiment of the power supply system of the present invention. Figure 4 .

[0099] Figure 7 FIG1 is a block diagram showing a specific control process of an embodiment of a power supply system of the present invention.

[0100] Figure 8 FIG. 1 is an exemplary diagram sequentially showing an example of a specific example of the power supply system of the present invention.

[0101] Fig. 9 FIG. 2 is an exemplary diagram sequentially showing a specific example of the power supply system of the present invention.

[0102] Fig.10 The following is an example of a specific example of the power supply system of the present invention. Figure 3 .

[0103] Fig.11 The following is an example of a specific example of the power supply system of the present invention. Figure 4 .

[0104] Fig.12 The following is an example of a specific example of the power supply system of the present invention. Figure 5 .

[0105] Fig.13 The following is an example of a specific example of the power supply system of the present invention. Figure 6 .

[0106] Fig.14 The following is an example of a specific example of the power supply system of the present invention. Figure 7 .

[0107] Fig.15 The following is an example of a specific example of the power supply system of the present invention. Figure 8 .

[0108] Fig.16 This is a flowchart showing the flow of an embodiment of a method for controlling a power supply system according to the present invention.

[0109] Fig.17 This is a flowchart showing a specific process of an embodiment of a method for controlling a power supply system of the present invention.

[0110] Fig.18 It is a structural diagram showing a specific structural configuration of an embodiment of a power supply device of the present invention.

[0111] Figures 19a to 19c 1 to 2 are block diagrams showing a control process of an embodiment of a power supply device of the present invention. Figure 3 .

[0112] Fig. 20 FIG2 is a block diagram showing a specific control process of an embodiment of the power supply system of the present invention.

[0113] Fig.21 1 is a flowchart showing the flow of another embodiment of a method for controlling a power supply system according to the present invention.

[0114] Fig. 22 1 is a flowchart showing a specific process of another embodiment of a method for controlling a power supply system of the present invention. DETAILED DESCRIPTION

[0115] It should be noted that the technical terms used in this specification are only used to illustrate specific embodiments and are not intended to limit the technical ideas disclosed in this specification. In addition, unless specifically defined as other meanings in this specification, the technical terms used in this specification should be interpreted as the meanings commonly understood by ordinary technicians in the field of the technology disclosed in this specification, and should not be interpreted as overly broad meanings or overly narrowed meanings. In addition, when the technical terms used in this specification are erroneous technical terms that cannot accurately express the technical ideas disclosed in this specification, they should be replaced and understood as technical terms that can be correctly understood by those skilled in the art. In addition, the general terms used in this specification should be interpreted according to the definitions or contexts in the dictionary, and should not be interpreted as overly narrowed meanings.

[0116] In addition, unless the context clearly indicates otherwise, singular expressions used in this specification include plural expressions. In this specification, terms such as "consisting of" or "comprising" should not be interpreted as necessarily including all the various constituent elements or various steps recorded in the specification, but should be interpreted as not including some of the constituent elements or some of the steps, or further including other constituent elements or steps.

[0117] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, the same or similar components are denoted by the same reference numerals regardless of the figure numbers, and repeated description thereof will be omitted.

[0118] In addition, when describing the technology disclosed in this specification, if it is determined that the detailed description of the related known technology may confuse the main idea of ​​the technology disclosed in this specification, the detailed description will be omitted. In addition, it should be noted that the drawings are only for the purpose of making the technical ideas disclosed in this specification easy to understand, and should not be interpreted as limiting the technical ideas of the present invention through the drawings.

[0119] Hereinafter, an embodiment of the power supply system of the present invention will be described.

[0120] The power supply system may be implemented in a combination or in a separate form of the embodiments described below.

[0121] The power supply system may be a power supply system including a plurality of power modules.

[0122] The power supply system may be a system including a plurality of packaged power devices to supply power.

[0123] Here, the power supply device may be a power board encapsulating a plurality of power control devices.

[0124] like Figure 1a and Figure 2aAs shown, the power supply system 1000 includes: a plurality of power boards 100, 200, 300, 400, which convert the power received from each of the plurality of power supply sources 10 into DC power, and convert the DC power into a driving power for driving a load 20 to supply the driving power to the load 20; a bus line 1, which is connected to the power supply terminal of each of the plurality of power boards 100, 200, 300, 400 for inputting / outputting the DC power, so that the DC power converted in the plurality of power boards 100, 200, 300, 400 is turned on; a plurality of circuit breakers 130, 230, 330, 430, which are arranged between each of the power supply terminals and the bus line 1 to limit the connection between the power supply terminal and the bus line 1; and a control device 600, which monitors and controls the plurality of power boards 100, 200, 300, 400.

[0125] In the Figure 1a In the case where the power supply system 1000 is constructed in the manner shown, the bus line 1 is commonly connected to the power supply terminal that outputs the DC power from each of the plurality of power boards 100, 200, 300, 400 to transmit the DC power converted in the plurality of power boards 100, 200, 300, 400, a plurality of first circuit breakers 130a, 230a, 330a, 430a are provided in a circuit connected between the power supply terminal commonly connected to the output of the DC power supply in the output terminal and the bus line 1 to limit the connection between the power supply terminal and the bus line 1, and a plurality of second circuit breakers 130b, 230b, 330b, 430b are provided in a circuit connected between the second output terminal from which the output of the DC power supply in the output terminal is individually separated and the bus line 1 to limit the connection between the second output terminal and the bus line 1.

[0126] In addition, in Figure 2a In the case where the power supply system 1000 is constructed in the manner shown, the bus line 1 is commonly connected to the power terminals O1 to O4 through which the DC power flows in each of the plurality of power boards 100, 200, 300, and 400 to transmit the DC power output from each of the plurality of power boards 100, 200, 300, and 400, and the plurality of circuit breakers 130 are arranged on each circuit connected to the power terminals between the plurality of power boards 100, 200, 300, and 400 in the bus line 1 to limit the connection between the plurality of power boards 100, 200, 300, and 400.

[0127] In such Figure 1a or Figure 2aIn the power supply system 1000 shown, the control device 600 determines the supply target power board among the multiple power boards 100, 200, 300, 400 that supplies the DC power to the abnormal power board where the abnormality occurs, closes one or more circuit breakers among the multiple circuit breakers 130, 230, 330, 430 connected to the abnormal power board and the supply target power board, and controls to supply the DC power from the supply target power board to the abnormal power board through the bus line 1.

[0128] That is, the power supply system 1000 determines the supply target power board among the multiple power boards 100, 200, 300, 400 that supplies the DC power to the abnormal power board where the abnormality occurs, and closes one or more circuit breakers connected to the abnormal power board and the supply target power board, thereby controlling the supply target power board to supply the DC power to the abnormal power board through the bus line 1.

[0129] Here, each of the plurality of power boards 100, 200, 300, 400 may be as follows: Figure 1b and Figure 2b The power module 100 is shown.

[0130] Figure 1b It shows that Figure 1a The specific structure of the plurality of power boards 100, 200, 300, 400 in the case where the power supply system 1000 is constructed in the manner shown, Figure 2b As shown in the figure Figure 1b The specific structure of the plurality of power boards 100, 200, 300, 400 in the case where the power supply system 1000 is configured in the manner shown in FIG. 1 is as follows: Figure 1b and Figure 2b It can be implemented in the manner shown, or it can also be implemented in other forms.

[0131] The plurality of power boards 100 , 200 , 300 , 400 may be modules including a plurality of power control devices.

[0132] The plurality of power boards 100 , 200 , 300 , 400 may be power devices encapsulating a plurality of the power control devices.

[0133] For example, it may be a power board encapsulating a plurality of the power control devices.

[0134] The plurality of power boards 100 , 200 , 300 , 400 may be packaged power boards installed in buildings requiring high power, such as power plants, workshops, factories, high-rise buildings, apartments, etc., to supply power.

[0135] In addition, the plurality of power boards 100 , 200 , 300 , and 400 may also be packaged power boards disposed in any space.

[0136] A plurality of the power control devices may be encapsulated in a plurality of the power boards 100 , 200 , 300 , 400 to supply power to each load.

[0137] That is, a plurality of the power control devices are respectively packaged in the plurality of power boards 100 , 200 , 300 , 400 to supply the driving power to each of the loads 20 carried by each of the plurality of the power boards 100 , 200 , 300 , 400 .

[0138] like Figure 1b and Figure 2b As shown, each of the plurality of power boards 100, 200, 300, 400 may include: a plurality of first power conversion devices 110 (210, 310, 410); one or more second power conversion devices 120 (220, 320, 420); and a control unit 140 (240, 340, 440), so that the power received from each of the plurality of power supply sources 10 can be converted into the DC power supply, and the DC power supply can be converted into the driving power supply for driving the load 20, so as to supply the driving power supply to the load 20.

[0139] like Figure 1a and Figure 2a As shown, the plurality of power supply sources 10 supplying power to the plurality of power strips 100 , 200 , 300 , 400 may include a first alternating current power source 10 # 1 and a second alternating current power source 10 # 3 supplying AC power.

[0140] The plurality of power supply sources 10 may further include a battery power source 10#2 for storing DC power.

[0141] Here, the first AC power source 10#1 may be a main system power source G that supplies AC power, the second AC power source 10#3 may be a bypass system power source P that supplies AC power, and the battery power source 10#2 may be a battery power source B that supplies DC power.

[0142] That is, Figure 1a and Figure 2a As shown, the plurality of power supply sources 10 may include a system power G, a bypass power P and a battery power B.

[0143] Thus, each of the plurality of power boards 100 , 200 , 300 , 400 can receive power from the system power G, the bypass power P, and the battery power B, respectively.

[0144] The battery 10#2 may be an emergency battery that stores DC power to supply the stored DC power in an emergency.

[0145] When an abnormality occurs in the first AC power source and the second AC power source, the battery 10 # 2 may supply the stored DC power to the supply device 100 .

[0146] Thus, when the supply of the DC power to the second power conversion device 120 is interrupted, the plurality of power supply sources 10 can supply the power stored in the battery 10 # 2 to the first power conversion device 110 while the supply of the DC power is being restored.

[0147] Here, the situation in which the supply of the DC power supply is interrupted may be one or more of the situations in which the power supply of the first AC power supply 10#1 and the second AC power supply 10#3 is interrupted and the operation of the plurality of first power conversion devices 110 that receive power from the first AC power supply 10#1 and the second AC power supply 10#3 is interrupted.

[0148] After the supply of the DC power source is interrupted, the battery 10#2 may uninterruptedly supply the stored power to the first power conversion device 110 until the supply of the DC power source is switched and restored.

[0149] The uninterrupted supply means that the stored power is supplied to the first power conversion device 110 so that the power supply is not interrupted, that is, a power outage does not occur.

[0150] Therefore, the supply device 100 can uninterruptedly supply power to the load 20 through the battery 10#2, and can realize uninterrupted power supply to the load 20.

[0151] In addition, the plurality of power supply sources 10 may further include an emergency power supply A. When an abnormality occurs in the first AC power supply G, the second AC power supply P, and the battery power supply B, the emergency power supply A may supply emergency generated power to the load 20 .

[0152] The emergency power supply A may be a power supply that maintains the driving of the load 20 within a predetermined time by supplying emergency power to each of the loads 20 when an abnormality occurs in the first AC power supply G, the second AC power supply P, and the battery power supply B that supply power to each of the plurality of power strips 100, 200, 300, 400 and fail to supply power.

[0153] For example, the emergency power supply A may be a power supply including an emergency generator.

[0154] Preferably, if Figure 1a and Figure 2a As shown, each of the multiple power strips 100, 200, 300, 400 can receive power from three power supply sources 10, namely, the system power supply G, the bypass power supply P and the battery power supply B, and can receive power from the emergency power supply A only when the system power supply G, the bypass power supply P and the battery power supply B cannot supply power.

[0155] Here, each of the plurality of power supply sources 10 that supplies power to each of the plurality of power strips 100, 200, 300, 400 may supply power to each of the plurality of power strips 100, 200, 300, 400 in one system, or may supply power to each of the plurality of power strips 100, 200, 300, 400 from each individual distribution board through an individual distribution board.

[0156] Each of the plurality of power boards 100, 200, 300, 400 can receive power from each of the plurality of power supply sources 10, convert the received power into the DC power through the plurality of first power conversion devices 110, 210, 310, 410, and convert the DC power into the driving power through one or more of the second power conversion devices 120, 220, 320, 420 to supply to the load 20.

[0157] Each of the plurality of power boards 100, 200, 300, 400 may include a plurality of first power conversion devices 110, 210, 310, 410 connected to each of the plurality of power supply sources 10, so that the power received from each of the plurality of power supply sources 10 can be converted into the DC power by the plurality of first power conversion devices 110.

[0158] Preferably, each of the plurality of power strips 100 , 200 , 300 , 400 may include three conversion devices connected to each of the plurality of power supply sources 10 .

[0159] Each of the plurality of power strips 100 , 200 , 300 , 400 may receive power from any one of the plurality of power supply sources 10 and convert the power into the DC power.

[0160] That is, each of the plurality of power strips 100 , 200 , 300 , 400 may selectively receive power from any one of the plurality of power supply sources 10 .

[0161] Each of the plurality of power strips 100 , 200 , 300 , 400 may receive power from any one of the plurality of power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0162] The supply standard may be a standard regarding power supply priorities of the plurality of power supply sources 10 .

[0163] For example, the order may be set to be the first AC power source 10#1, the second AC power source 10#3, and the battery 10#3.

[0164] When the supply standard is as described above, each of the plurality of power strips 100, 200, 300, 400 can receive power from the first AC power source 10#1, the second AC power source 10#3, and the battery 10#3 in sequence.

[0165] When receiving power from the first AC power source 10#1, each of the plurality of power strips 100, 200, 300, 400 may control the operation of the first conversion device 110#1, 210#1, 310#1, 410#1 connected to the first AC power source 10#1.

[0166] In this case, each of the multiple power strips 100, 200, 300, 400 can connect the first conversion device 110#1, 210#1, 310#1, 410#1 and disconnect the second conversion device 110#2, 210#2, 310#2, 410#2 and the third conversion device 110#3, 210#3, 310#3, 410#3 connected to the second AC power source 10#3 by closing the opening and closing unit of the first conversion device 110#1, 210#1, 310#1, 410#1 and opening the opening and closing units of the second conversion device 110#2, 210#2, 310#2, 410#2 connected to the battery power source 10#2 and the third conversion device 110#3, 210#3, 310#3, 410#3 connected to the second AC power source 10#3.

[0167] When receiving power from the second AC power source 10#3, each of the plurality of power strips 100, 200, 300, 400 may control the operation of the third conversion device 110#3, 210#3, 310#3, 410#3 connected to the second AC power source 10#3.

[0168] In this case, each of the multiple power strips 100, 200, 300, 400 can connect only the third conversion device 110#3, 210#3, 310#3, 410#3 by closing the opening and closing unit of the third conversion device 110#3, 210#3, 310#3, 410#3 and opening the opening and closing units of the first conversion device 110#1, 210#1, 310#1, 410#1 and the second conversion device 110#2, 210#2, 310#2, 410#2, so as to disconnect the first conversion device 110#1, 210#1, 310#1, 410#1 and the second conversion device 110#2, 210#2, 310#2, 410#2.

[0169] When receiving power from the battery power source 10#2, each of the plurality of power boards 100, 200, 300, 400 may control the operation of the second conversion device 110#2, 210#2, 310#2, 410#2 connected to the battery power source 10#2.

[0170] In this case, each of the multiple power strips 100, 200, 300, 400 can connect only the second conversion device 110#2, 210#2, 310#2, 410#2 and disconnect the first conversion device 110#1, 210#1, 310#1, 410#1 and the third conversion device 110#3, 210#3, 310#3, 410#3 by closing the opening and closing unit of the second conversion device 110#2, 210#2, 310#2, 410#2 and opening the opening and closing units of the first conversion device 110#1, 210#1, 310#1, 410#1 and the third conversion device 110#3, 210#3, 310#3, 410#3.

[0171] Each of the plurality of power boards 100, 200, 300, 400 can select any one of the plurality of first power conversion devices 110, 210, 310, 410 according to the status of the plurality of power supply sources 10, so that the DC power is transmitted by the selected conversion device to each of one or more of the second power conversion devices 120, 220, 320, 420.

[0172] That is, each of the plurality of power boards 100 , 200 , 300 , 400 can convert the DC power through a conversion device selected from the plurality of first power conversion devices 110 , and transmit it to one or more second power conversion devices 120 , 220 , 320 , 420 .

[0173] In each of the plurality of power boards 100, 200, 300, 400, when an abnormality occurs in a conversion device that is transmitting the DC power to one or more of the second power conversion devices 120, 220, 320, 420 and any one or more of the power supply sources 10 corresponding to the conversion device, the DC power can be transmitted to one or more of the second power conversion devices 120, 220, 320, 420 by other conversion devices other than the conversion device.

[0174] In each of the plurality of power boards 100, 200, 300, 400, when an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to one or more of the second power conversion devices 120, 220, 320, 420 and the power supply source corresponding to the conversion device, the power supply source and the conversion device that are supplying power can be switched so that the DC power is transmitted to one or more of the second power conversion devices 120, 220, 320, 420 by other conversion devices other than the conversion device.

[0175] Each of the plurality of power boards 100, 200, 300, 400 can normally operate the first conversion device 110#1, 210#1, 310#1, 410#1 that receives power from the first AC power source 10#1 to transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420.

[0176] That is, among the plurality of power supply sources 10 , the first AC power source 10 # 1 may be given the highest priority to supply power to the plurality of power strips 100 , 200 , 300 , and 400 .

[0177] When an abnormality occurs in any one or more of the first AC power supply 10#1 and the first conversion devices 110#1, 210#1, 310#1, 410#1, each of the multiple power boards 100, 200, 300, 400 can transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420 by stopping the operation of the first conversion device 110#1, 210#1, 310#1, 410#1 and operating the third conversion device 110#3, 210#3, 310#3, 410#3 that receives power from the second AC power supply 10#3.

[0178] That is, when an abnormality occurs in the first AC power source 10#1 that supplies power to the plurality of power strips 100, 200, 300, 400 with the highest priority, the power supply source can be switched to the second AC power source 10#3 to receive power.

[0179] Thus, the plurality of power supply sources 10 can supply power to the plurality of power strips 100 , 200 , 300 , 400 via the first AC power source 10 # 1 , the second AC power source 10 # 3 , and the battery power source 10 # 2 in sequence.

[0180] When an abnormality occurs in any one or more of the second AC power supply 10#3 and the third conversion device 110#3, 210#3, 310#3, 410#3, each of the plurality of power boards 100, 200, 300, 400 can stop the operation of the third conversion device 110#3, 210#3, 310#3, 410#3, and transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420 by receiving the DC power from the supply target power board, or can stop the operation of the third conversion device 110#3, 210#3, 310#3, 410#3 and operate the second conversion device 110#2, 210#2, 310#2, 410#2 that receives power from the battery power supply 10#2, and transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420.

[0181] That is, during a period in which the DC power is transmitted to one or more of the second power conversion devices 120, 220, 320, 420 by operating the third conversion device 110#3, 210#3, 310#3, 410#3 due to an abnormality in any one of the first AC power source 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1, the second AC power source 10#3 and the third conversion device 110#3, 210#3, 310#3, 410#3 are in operation, When an abnormality occurs in any one or more of the power boards 100, 200, 300, 400, each of the plurality of power boards 100, 200, 300, 400 can transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420 by receiving the DC power from the supply object power board, or can transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420 by operating the second conversion devices 110#2, 210#2, 310#2, 410#2.

[0182] When the DC power is being supplied from the supply target power board to the abnormality occurring power board through the bus line 1, each of the plurality of power boards 100, 200, 300, 400 can operate the second conversion device 110#2, 210#2, 310#2, 410#2 to transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420.

[0183] That is, during the period when the DC power is transmitted to one or more of the second power conversion devices 120, 220, 320, 420 by operating the third conversion device 110#3, 210#3, 310#3, 410#3 due to an abnormality in any one or more of the first AC power source 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1, the second AC power source 10#3 and the third conversion device 110#3, 210#3, 310#3, 410#3 are abnormal. When an abnormality occurs in any one or more of #3, 310#3, and 410#3 and the DC power is being supplied from the supply target power board to the power board where the abnormality occurs through the bus line 1, each of the multiple power boards 100, 200, 300, and 400 can transmit the DC power to one or more of the second power conversion devices 120, 220, 320, and 420 by operating the second conversion device 110#2, 210#2, 310#2, and 410#2.

[0184] The following will be based on Figure 1aAn embodiment of the power supply system 1000 is described with reference to the power supply system 1000 shown in FIG.

[0185] In such Figure 1a In the power supply system 1000 shown, the bus line 1 is commonly connected to an output terminal of each of the plurality of power boards 100, 200, 300, 400 outputting the DC power so as to transmit the DC power converted in the plurality of power boards 100, 200, 300, 400, a plurality of first circuit breakers 130a, 230a, 330a, 430a are provided in a circuit in which the power terminal having the output of the DC power source commonly connected thereto is connected to the bus line 1 so as to limit the connection between the power terminal and the bus line 1, a plurality of second circuit breakers 130b, 230b, 330b, 430b are provided in a circuit in which the output terminal of the DC power source is commonly connected to the second output terminal connected thereto so as to limit the connection between the second output terminal and the bus line 1, wherein as shown in FIG. Figure 1b As shown, each of the plurality of power boards 100, 200, 300, 400 may include: a plurality of first power conversion devices 110, which convert the power received from each of the plurality of power supply sources 10 into a DC power supply; one or more second power conversion devices 120, which convert the DC power supply into a driving power supply for driving the load 20, so as to supply the driving power supply to the load 20; the first circuit breaker 130a, 230a, 330a, 430a, which is arranged between the power supply terminal commonly connected to the outputs of the plurality of first power conversion devices 110 and the bus line 1 connected to the power supply terminal, so as to limit the power supply terminal and the bus line 1; the second circuit breaker 130b, 230b, 330b, 430b is arranged between the second output terminal which is the output of any one of the plurality of first power conversion devices 110 and the bus line 1 connected to the second output terminal to limit the connection between the second output terminal and the bus line 1; and the control unit 140, 240, 340, 440 controls the operation of each of the plurality of first power conversion devices 110 and one or more second power conversion devices 120 and the opening and closing of each of the first circuit breaker 130a and the second circuit breaker 130b according to the state of the DC power supply or the driving power supply.

[0186] In each of the plurality of power boards 100, 200, 300, 400, when the DC power is received from the bus line 1, the control unit 140, 240, 340, 440 can respectively close the first circuit breakers 130a, 230a, 330a, 430a, and when the DC power is supplied to the bus line 1, the control unit 140, 240, 340, 440 can respectively close the second circuit breakers 130b, 230b, 330b, 430b.

[0187] In addition, each of the plurality of power boards 100, 200, 300, 400 may also be configured as follows: Figure 1b The power modules 100 shown are configured differently.

[0188] like Figure 1a The power supply system 1000 shown may include a plurality of power boards 100 , 200 , 300 , 400 , and the plurality of power boards 100 , 200 , 300 , 400 may be connected to a bus line 1 .

[0189] The plurality of power boards 100, 200, 300, 400 may be composed of a plurality of power boards, and as Figure 1a As shown, it can be composed of more than four.

[0190] Each of the plurality of power strips 100 , 200 , 300 , 400 may communicate with the control device 600 and perform an operation according to a result of the communication with the control device 600 .

[0191] For example, a control instruction may be received from the control device 600 and an action may be performed according to the control instruction, or status information may be transmitted to the control device 600 .

[0192] The power supply end and the second output end of each of the plurality of first power conversion devices 110, 210, 310, 410 included in each of the plurality of power boards 100, 200, 300, 400 can be separated so that the DC power can be output from the power supply end and the second output end respectively.

[0193] The plurality of first power conversion devices 110 , 210 , 310 , 410 may include one or more of an AC / DC conversion device that converts AC power into DC power and a DC / DC conversion device that converts the level of DC power.

[0194] Corresponding to each of the plurality of power supply sources 10 , the plurality of first power conversion devices 110 , 210 , 310 , 410 may include three conversion devices 110 # 1 to # 3 , 210 # 1 to # 3 , 310 # 1 to # 3 , 410 # 1 to # 3 .

[0195] Accordingly, the first AC power supply 10#1 can be connected to the first conversion device 110#1 to supply AC power to the first conversion device 110#1, the battery power supply 10#2 can be connected to the second conversion device 110#2 to supply DC power to the second conversion device 110#2, and the second AC power supply 10#3 can be connected to the third conversion device 110#3 to supply AC power to the third conversion device 110#3.

[0196] The first conversion device 110#1 may be an AC / DC conversion device that converts AC power into DC power, the second conversion device 110#2 may be a DC / DC conversion device that converts the level of DC power, and the third conversion device 110#3 may be an AC / DC conversion device that converts AC power into DC power.

[0197] The plurality of first power conversion devices 110 , 210 , 310 , 410 may include a switching unit for switching connections at the front end and the rear end, respectively.

[0198] The switching unit may be provided at each of the input end and the output end of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 to limit the switching of the power input / output from the plurality of first power conversion devices 110 , 210 , 310 , 410 .

[0199] Here, the switching unit provided at the input end may be a circuit breaker that senses overcurrent and cuts off a circuit.

[0200] More specifically, an AC air circuit breaker (ACB: Air Circuit Breaker) can be provided at the input end of the first conversion device 110#1 and the third conversion device 110#3 that receive AC power from the first AC power source 10#1 and the second AC power source 10#3, and a DC distribution circuit breaker (MCCB: Molded Circuit Breaker) can be provided at the input end of the second conversion device 110#2 that receives DC power from the battery 10#2.

[0201] The switching unit may switch on and off the connection of the plurality of first power conversion devices 110 , 210 , 310 , 410 according to the operations of the plurality of first power conversion devices 110 , 210 , 310 , 410 .

[0202] For example, when power is not received from the plurality of power supply sources 10 , the switch unit provided at each of the input terminal and the output terminal may be opened to disconnect the corresponding conversion device.

[0203] The output end may be divided into the power supply end and the second output end.

[0204] That is, the power supply end and the second output end of the plurality of first power conversion devices 110 , 210 , 310 , 410 may be separated, so that the DC power may be output from the power supply end and the second output end, respectively.

[0205] The plurality of first power conversion devices 110 , 210 , 310 , 410 may be controlled by the control unit 140 , 240 , 340 , 440 .

[0206] The power supply end may be connected to form a circuit by the output end of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 .

[0207] Thus, the power supply terminal may be a circuit commonly connected to the output of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 , so that the DC power output from the plurality of first power conversion devices 110 , 210 , 310 , 410 flows through.

[0208] The DC power output from any one of the plurality of first power conversion devices 110 , 210 , 310 , 410 may flow through the power supply terminal.

[0209] The power supply terminal can be connected to the input terminal of the bus line 1 and each of the one or more second power conversion devices 120, 220, 320, 420 to transmit the DC power to the bus line 1 or the one or more second power conversion devices 120, 220, 320, 420.

[0210] The second output terminal may be an output terminal of any one of the plurality of first power conversion devices 110 , 210 , 310 , 410 separated from the power supply terminal.

[0211] Thus, the second output terminal may be a circuit that is not connected to the power supply terminal and allows the DC power output from any one of the plurality of first power conversion devices 110 , 210 , 310 , 410 to flow therethrough.

[0212] The second output terminal may be connected to the bus line 1 to transmit the DC power to the bus line 1 .

[0213] Preferably, the second output end may be an output end of the third conversion device 110 # 3 , 210 # 3 , 310 # 3 , 410 # 3 corresponding to the third supply source 10 # 3 .

[0214] In addition, the second output end may also be the output end of the battery corresponding to the second supply source 10#2.

[0215] Accordingly, the second output terminal may be an output terminal of the third conversion device 110#3, 210#3, 310#3, 410#3 that receives power from the bypass power supply P serving as the third supply source 10#3.

[0216] That is, the output of the DC power supply of each of the third conversion devices 110#3, 210#3, 310#3, 410#3 included in each of the multiple power boards 100, 200, 300, 400 can be divided into two, namely, the power supply end and the second output end, the power supply end is commonly connected to the outputs of the first and second conversion devices 110#1 and 110#2, 210#1 and 210#2, 310#1 and 310#2, 410#1 and 410#2, and the second output end can be separated from the power supply end and output independently.

[0217] As described above, the power supply terminal outputting the DC power from the plurality of first power conversion devices 110 , 210 , 310 , 410 and the second output terminal may be connected to the bus line 1 .

[0218] That is, the power supply end can be connected to the input end of the bus line 1 and each of the one or more second power conversion devices 120, 220, 320, 420 to transmit the DC power to the bus line 1 and each of the one or more second power conversion devices 120, 220, 320, 420, and the second output end can be connected to the bus line 1 to transmit the DC power to the bus line 1.

[0219] The DC power converted in each of the plurality of first power conversion devices 110 , 210 , 310 , 410 can be transmitted to each of one or more second power conversion devices 120 , 220 , 320 , 420 through the power supply end of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 .

[0220] The plurality of first power conversion devices 110 , 210 , 310 , 410 may be controlled by the control unit 140 , 240 , 340 , 440 .

[0221] The one or more second power conversion devices 120 , 220 , 320 , 420 may convert the DC power received from the plurality of first power conversion devices 110 , 210 , 310 , 410 into the driving power of AC power.

[0222] The one or more second power conversion devices 120 , 220 , 320 , 420 may include three inverters 120 # 1 to # 3 , 220 # 1 to # 3 , 320 # 1 to # 3 , 420 # 1 to # 3 corresponding to each of the loads 20 .

[0223] Each of the one or more second power conversion devices 120 , 220 , 320 , 420 may be connected to each of the loads 20 to supply the driving power to the connected loads.

[0224] Each of the one or more second power conversion devices 120 , 220 , 320 , 420 may include a switching unit at the front end for switching the connection.

[0225] The switching unit may be a switch provided at an input end of each of the at least one second power conversion device 120 , 220 , 320 , 420 to limit the power input to the at least one second power conversion device 120 , 220 , 320 , 420 .

[0226] Here, the switching unit provided at the input end may be a circuit breaker that senses overcurrent and cuts off a circuit.

[0227] The driving power converted and output by one or more of the second power conversion devices 120 , 220 , 320 , 420 may be transmitted to each of the loads 20 .

[0228] Here, the load 20 may be a motor M load.

[0229] The one or more second power conversion devices 120 , 220 , 320 , 420 may be controlled by the control unit 140 , 240 , 340 , 440 .

[0230] In the power supply system 1000 as described above, the bus line 1 commonly connected to the output end of each of the plurality of power boards 100, 200, 300, 400 is a DC bus line through which DC power flows, and the DC power transmitted through the first output end or the second output end of each of the plurality of power boards 100, 200, 300, 400 can flow through the bus line 1.

[0231] The bus line 1 may have a rated value ranging from the magnitude of the DC power supplied from at least one conversion device 110 to the magnitude of the DC power supplied from two conversion devices 110 .

[0232] That is, the rated value of the bus line 1 may be a rated value capable of enabling transmission of the DC power supplied from at least two conversion devices 110 .

[0233] The bus line 1 may have a rating of a size capable of enabling transmission of DC power between all power boards connected to the bus line 1 .

[0234] The bus line 1 may be formed as a circuit by a DC current flowing through the DC power source.

[0235] That is, in the power supply system 1000 , the first output terminal or the second output terminal of each of the plurality of power boards 100 , 200 , 300 , 400 may be commonly connected to the bus line 1 formed by one circuit to transmit the DC power through the bus line 1 .

[0236] The plurality of circuit breakers 130, 230, 330, 430 may include: a plurality of first circuit breakers 130a, 230a, 330a, 430a, which are provided at the output end of each of the plurality of power boards 100, 200, 300, 400, and a circuit connecting each of the power supply terminals where the output of the DC power supply is commonly connected and the bus line 1, so as to limit the connection between the power supply terminals and the bus line 1; and a plurality of second circuit breakers 130b, 230b, 330b, 430b, which are provided at the output end of each of the plurality of power boards 100, 200, 300, 400, and a circuit connecting each of the second output terminals where the output of the DC power supply is individually separated and the bus line 1, so as to limit the connection between the second output terminals and the bus line 1.

[0237] That is, in the power supply system 1000, the first output end or the second output end of each of the plurality of power boards 100, 200, 300, 400 is commonly connected to the bus line 1 formed by a circuit, and the first and second circuit breakers 130, 230, 330, 430 can be formed in a form that limits the connection between the plurality of power boards 100, 200, 300, 400 and the bus line 1.

[0238] In each of the plurality of power boards 100 , 200 , 300 , 400 , the first circuit breaker 130 a , 230 a , 330 a , 430 a may be provided on each circuit where the power end of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 is connected to the bus line 1 .

[0239] Thus, in each of the plurality of power boards 100 , 200 , 300 , 400 , each of the power terminals can be commonly connected to the bus line 1 .

[0240] In addition, in each of the plurality of power boards 100, 200, 300, 400, the second circuit breaker 130b, 230b, 330b, 430b can be set on each circuit in which the second output terminal of each of the plurality of first power conversion devices 110, 210, 310, 410 is connected to the bus line 1.

[0241] Therefore, in each of the plurality of power boards 100 , 200 , 300 , 400 , each of the second output terminals can be connected to the bus line 1 in common.

[0242] Each of the first and second circuit breakers 130 , 230 , 330 , 430 is a DC circuit breaker that cuts off a DC power source, and may be provided on a circuit between the first and second output terminals and the bus line 1 .

[0243] Each of the first and second circuit breakers 130 , 230 , 330 , 430 may be opened in normal times and closed when in operation, thereby limiting the connection between the first and second output terminals and the bus line 1 .

[0244] Thus, each of the plurality of power boards 100 , 200 , 300 , 400 can be connected to the bus line 1 by opening and closing each of the plurality of circuit breakers 130 , 230 , 330 , 430 .

[0245] The first circuit breakers 130a, 230a, 330a, 430a among the first and second circuit breakers 130, 230, 330, 430 may be arranged between the power supply terminal to which the output of each of the plurality of first power conversion devices 110, 210, 310, 410 is connected and the bus line 1 connected to the power supply terminal.

[0246] That is, the first circuit breakers 130a, 230a, 330a, 430a may be disposed between the power terminal of the power module 100 and the bus line 1 to limit the connection between the plurality of power boards 100, 200, 300, 400 and the bus line 1.

[0247] Accordingly, the plurality of power boards 100, 200, 300, 400 can be connected to the bus line 1 via the power supply end, and their connection to the bus line 1 can be limited by opening and closing the first circuit breakers 130a, 230a, 330a, 430a.

[0248] The second circuit breaker 130b, 230b, 330b, 430b among the first and second circuit breakers 130, 230, 330, 430 can be arranged between the second output end which is the output end of any one of the plurality of first power conversion devices 110, 210, 310, 410 and the bus line 1 connected to the second output end.

[0249] That is, the second circuit breakers 130 b , 230 b , 330 b , 430 b may be disposed between the second output terminals of the plurality of power boards 100 , 200 , 300 , 400 and the bus line 1 to limit the connection between the power module 100 and the bus line 1 .

[0250] Accordingly, the plurality of power boards 100, 200, 300, 400 can be connected to the bus line 1 via the second output terminal, and their connection to the bus line 1 can be limited by opening and closing the second circuit breakers 130b, 230b, 330b, 430b.

[0251] Each of the plurality of power boards 100 , 200 , 300 , 400 can control and monitor operations of the plurality of first power conversion devices 110 , 210 , 310 , 410 and one or more second power conversion devices 120 , 220 , 320 , 420 included therein.

[0252] Each of the plurality of power boards 100, 200, 300, 400 can control the opening and closing of each of the plurality of circuit breakers 130, 230, 330, 430 based on the results of controlling and monitoring the actions of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein.

[0253] Each of the plurality of power boards 100, 200, 300, 400 can transmit the results of controlling and monitoring the actions of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein to the control device 600.

[0254] Each of the plurality of power boards 100, 200, 300, 400 can detect the status of the DC power supply and the driving power supply by controlling and monitoring the operation of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein.

[0255] Each of the plurality of power boards 100 , 200 , 300 , 400 may detect the states of the DC power source and the driving power source, and transmit the detection result to the control device 600 .

[0256] As described above, the control device 600 that controls the plurality of power boards 100, 200, 300, 400 can determine the supply target power board among the plurality of power boards 100, 200, 300, 400 that supplies the DC power to the abnormal power board, and close the first circuit breaker 130a, 230a, 330a, 430a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply target power board, so that control can be performed to supply the DC power from the supply target power board to the abnormal power board through the bus line 1.

[0257] The control device 600 can open the plurality of first and second circuit breakers 130, 230, 330, 430 under normal circumstances, and close the first circuit breakers 130a, 230a, 330a, 430a of the abnormal power board and the second circuit breakers 130b, 230b, 330b, 430b of the supply target power board when the supply target power board supplies the DC power to the abnormal power board.

[0258] That is, the control device 600 can open the plurality of first and second circuit breakers 130, 230, 330, 430 under normal circumstances, and when the abnormal power board occurs among the plurality of power boards 100, 200, 300, 400 and the supply target power board is determined, the first circuit breaker 130a, 230a, 330a, 430a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b of the determined supply target power board can be closed.

[0259] The following will be based on Figure 1b Another embodiment of the power supply system 1000 is described with reference to the power supply system 1000 shown in FIG.

[0260] In such Figure 1b In the power supply system 1000 shown, the bus line 1 is commonly connected to the output terminals O1 to O4 through which the DC power flows in each of the plurality of power boards 100, 200, 300, 400 to transmit the DC power output from each of the plurality of power boards 100, 200, 300, 400, and the plurality of circuit breakers 130 are provided in each circuit connected to the output terminals between the plurality of power boards 100, 200, 300, 400 in the bus line 1 to limit the connection between the plurality of power boards 100, 200, 300, 400, wherein as Figure 2b As shown, each of the plurality of power boards 100 , 200 , 300 , 400 may include a plurality of the first power conversion devices 110 , 210 , 310 , 410 , one or more of the second power conversion devices 120 , 220 , 320 , 420 and the control unit 140 , 240 , 340 , 440 .

[0261] In addition, each of the plurality of power boards 100, 200, 300, 400 may also be configured as follows: Figure 2b The power modules 100 shown are configured differently.

[0262] like Figure 1b The power supply system 1000 shown may include a plurality of power boards 100 , 200 , 300 , 400 , and the plurality of power boards 100 , 200 , 300 , 400 may be commonly connected to the bus line 1 formed by a plurality of circuits.

[0263] The plurality of power boards 100, 200, 300, 400 may be composed of a plurality of power boards, and as Figure 1b As shown, it can be composed of more than four.

[0264] Each of the plurality of power strips 100 , 200 , 300 , 400 may communicate with the control device 600 and perform an operation according to a result of the communication with the control device 600 .

[0265] For example, a control instruction may be received from the control device 600 and an action may be performed according to the control instruction, or status information may be transmitted to the control device 600 .

[0266] The output terminal of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 included in each of the plurality of power boards 100 , 200 , 300 , 400 may be connected to one output terminal of the DC power supply.

[0267] Thus, the output terminal of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 may form a DC circuit through which the DC power flows.

[0268] The DC power converted by each of the plurality of first power conversion devices 110 , 210 , 310 , 410 may be transmitted to each of one or more second power conversion devices 120 , 220 , 320 , 420 through the output end of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 .

[0269] Each of the plurality of power boards 100 , 200 , 300 , 400 may include three inverters 120 , 220 , 320 , 420 , and the driving power may be supplied to each of the three loads 20 through the three inverters 120 , 220 , 320 , 420 .

[0270] In each of the plurality of power boards 100 , 200 , 300 , 400 , the output terminals O1 to O4 of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 may be commonly connected to the bus line 1 to transmit the DC power output from the output terminals O1 to O4 to the bus line 1 .

[0271] Thus, in each of the plurality of power boards 100 , 200 , 300 , 400 , each of the output terminals O1 to O4 can be connected to one of the bus lines 1 .

[0272] The output terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 , 400 may be connected to the plurality of circuit breakers 130 ( 130 a to 130 f ) provided on the bus line 1 .

[0273] The output terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 , 400 that output the DC power source may be connected to any three of the plurality of circuit breakers 130 .

[0274] That is, the output terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 , 400 may be connected to three circuit breakers.

[0275] For example, Figure 1b As shown, in the case where there are four power strips 100, 200, 300, 400, the first power strip 100 can be connected to the first circuit breaker 130a, the second circuit breaker 130b and the third circuit breaker 130c, the second power strip 200 can be connected to the second circuit breaker 130b, the fourth circuit breaker 130d and the sixth circuit breaker 130f, the third power strip 300 can be connected to the first circuit breaker 130a, the fourth circuit breaker 130d and the fifth circuit breaker 130e, and the fourth power strip 400 can be connected to the fourth circuit breaker 130d, the fifth circuit breaker 130e and the sixth circuit breaker 130f.

[0276] Thus, each of the plurality of circuit breakers 130 may be connected to two power boards.

[0277] For example, the first circuit breaker 130a can be connected to the first power board 100 and the third power board 300, the second circuit breaker 130b can be connected to the first power board 100 and the second power board 200, the third circuit breaker 130c can be connected to the first power board 100 and the fourth power board 400, the fourth circuit breaker 130d can be connected to the second power board 200 and the third power board 300, the fifth circuit breaker 130e can be connected to the third power board 300 and the fourth power board 400, and the sixth circuit breaker 130f can be connected to the second power board 200 and the fourth power board 400.

[0278] The output end of any one of the plurality of power boards 100 , 200 , 300 , 400 may be connected to the output ends of other power boards respectively.

[0279] That is, the plurality of power boards 100 , 200 , 300 , 400 may be connected to other power boards respectively.

[0280] For example, the first power board 100 can be connected to the third power board 300 through the first circuit breaker 130a, connected to the second power board 200 through the second circuit breaker 130b, and connected to the fourth power board 400 through the third circuit breaker 130c, so that it can be connected to the second power board 200, the third power board 300, and the fourth power board 400 respectively.

[0281] In addition, the second power board 200 can be connected to the first power board 100 through the second circuit breaker 130b, connected to the third power board 300 through the fourth circuit breaker 130d, and connected to the fourth power board 400 through the sixth circuit breaker 130f, so that it can be connected to the first power board 100, the third power board 300 and the fourth power board 400 respectively.

[0282] In addition, the third power board 300 can be connected to the first power board 100 through the first circuit breaker 130a, connected to the second power board 200 through the fourth circuit breaker 130d, and connected to the fourth power board 400 through the fifth circuit breaker 130e, so that it can be connected to the first power board 100, the second power board 200 and the fourth power board 400 respectively.

[0283] In addition, the fourth power board 400 can be connected to the first power board 100 through the second circuit breaker 130b, connected to the third power board 300 through the fifth circuit breaker 130e, and connected to the second power board 200 through the sixth circuit breaker 130f, so that it can be connected to the first power board 100, the second power board 200 and the third power board 300 respectively.

[0284] In the bus line 1, a plurality of DC circuits through which the DC power flows may be connected in a mesh structure.

[0285] That is, in the power supply system 1000 , the output terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 , 400 are commonly connected to the bus line 1 formed in a grid shape, so that the DC power can be transmitted through the bus line 1 .

[0286] Each of the plurality of circuit breakers 130 may be provided on each circuit connected to output terminals O1 to O4 between the plurality of power boards 100, 200, 300, 400 in the bus line 1 to limit the connection between each of the plurality of power boards 100, 200, 300, 400.

[0287] Each of the plurality of circuit breakers 130 is a DC circuit breaker for cutting off a DC power source, and may be connected between each of the plurality of power boards 100 , 200 , 300 , 400 connected to the bus line 1 .

[0288] Each of the plurality of circuit breakers 130 may be connected between each of the plurality of power boards 100 , 200 , 300 , 400 to limit the connection between each of the plurality of power boards 100 , 200 , 300 , 400 and the bus line 1 .

[0289] That is, the plurality of circuit breakers 130 may limit the connection between the plurality of circuit breakers 130 through the bus line 1 by limiting the connection between each of the plurality of power boards 100 , 200 , 300 , 400 and the bus line 1 .

[0290] Each of the plurality of circuit breakers 130 may be provided in each circuit connected at the output end between the plurality of power boards 100 , 200 , 300 , 400 in the bus line 1 to limit the connection between the plurality of circuit breakers 130 through the bus line 1 .

[0291] The plurality of circuit breakers 130 may be set to the number corresponding to the number of connections between the output terminal of any one of the plurality of power boards 100 , 200 , 300 , 400 and each of the output terminals of the other power boards.

[0292] That is, the output terminal of any one power board can be connected to each of the output terminals of the other power boards.

[0293] When the number of the power boards 100 , 200 , 300 , 400 is N, the number of the circuit breakers 130 may be set to N(N−1) / 2.

[0294] For example, when the plurality of power boards 100, 200, 300, 400 is four, that is, when N is 4, it can be set to six which is 4(4-1) / 2.

[0295] Each of the plurality of circuit breakers 130 may be opened at normal times and closed when in operation, thereby limiting the connection between the plurality of power strips 100 , 200 , 300 , 400 .

[0296] Thus, each of the plurality of power strips 100 , 200 , 300 , 400 can be connected to other power strips by opening and closing each of the plurality of circuit breakers 130 .

[0297] Each of the plurality of power boards 100, 200, 300, 400 may be connected to other power boards via the plurality of circuit breakers 130 in the following manner: Figure 1b shown.

[0298] like Figure 1b As shown, among the plurality of power boards 100, 200, 300, 400, the output ends of the first power board 100, the second power board 200, the third power board 300 and the fourth power board 400 can be connected to the bus line 1, and the first to sixth circuit breakers 130a to 130f can be respectively arranged between the output ends of each of the plurality of power boards 100, 200, 300, 400 connected to the bus line 1.

[0299] The following will refer to Figure 1b The connection form is further described in detail.

[0300] The power terminal O1 of the first power board 100 can be connected to the bus line 1 and connected to the second output terminal O2 of the second power board 200, the third output terminal O3 of the third power board 300 and the fourth output terminal O4 of the fourth power board 400, and the second circuit breaker 130b can be arranged between the first output terminal O1 and the second output terminal O2, the first circuit breaker 130a can be arranged between the first output terminal O1 and the third output terminal O3, and the third circuit breaker 130c can be arranged between the first output terminal O1 and the fourth output terminal O4. The connection between the first power board 100 and the second power board 200 can be limited by the second circuit breaker 130b, the connection between the first power board 100 and the third power board 300 can be limited by the first circuit breaker 130a, and the connection between the first power board 100 and the fourth power board 400 can be limited by the third circuit breaker 130c.

[0301] The second output terminal O2 of the second power board 200 can be connected to the bus line 1 and connected to the power terminal O1 of the first power board 100, the third output terminal O3 of the third power board 300 and the fourth output terminal O4 of the fourth power board 400, and the second circuit breaker 130b can be arranged between the first output terminal O1 and the second output terminal O2, the fourth circuit breaker 130d can be arranged between the second output terminal O2 and the third output terminal O3, and the sixth circuit breaker 130f can be arranged between the second output terminal O2 and the fourth output terminal O4, so that the connection between the first power board 100 and the second power board 200 can be limited by the second circuit breaker 130b, the connection between the second power board 200 and the third power board 300 can be limited by the fourth circuit breaker 130d, and the connection between the second power board 200 and the fourth power board 400 can be limited by the sixth circuit breaker 130f.

[0302] The third output terminal O3 of the third power board 300 can be connected to the bus line 1 and connected to the power terminal O1 of the first power board 100, the second output terminal O2 of the second power board 200 and the fourth output terminal O4 of the fourth power board 400, and the first circuit breaker 130a can be arranged between the first output terminal O1 and the third output terminal O3, the fourth circuit breaker 130d can be arranged between the second output terminal O2 and the third output terminal O3, and the fifth circuit breaker 130e can be arranged between the third output terminal O3 and the fourth output terminal O4, so that the connection between the first power board 100 and the third power board 300 can be limited by the first circuit breaker 130a, the connection between the second power board 200 and the third power board 300 can be limited by the fourth circuit breaker 130d, and the connection between the third power board 300 and the fourth power board 400 can be limited by the fifth circuit breaker 130e.

[0303] The fourth output terminal O4 of the fourth power board 400 can be connected to the bus line 1 and connected to the power terminal O1 of the first power board 100, the second output terminal O2 of the second power board 200 and the third output terminal O3 of the third power board 300, and the third circuit breaker 130c can be arranged between the first output terminal O1 and the fourth output terminal O4, the sixth circuit breaker 130f can be arranged between the second output terminal O2 and the fourth output terminal O4, and the fifth circuit breaker 130e can be arranged between the third output terminal O3 and the fourth output terminal O4, so that the connection between the first power board 100 and the fourth power board 400 can be limited by the third circuit breaker 130c, the connection between the second power board 200 and the fourth power board 400 can be limited by the sixth circuit breaker 130f, and the connection between the third power board 300 and the fourth power board 400 can be limited by the fifth circuit breaker 130e.

[0304] The first to fourth power boards 100 , 200 , 300 , 400 are connected in the manner described above, whereby the output terminals O1 to O4 of the plurality of power boards 100 , 200 , 300 , 400 may be connected in a mesh shape.

[0305] As described above, the transmission of the DC power between the plurality of power boards 100 , 200 , 300 , 400 may be achieved by connecting each of the plurality of power boards 100 , 200 , 300 , 400 to each other.

[0306] That is, as shown in FIG. 1 , each of the plurality of power boards 100, 200, 300, 400 is connected to each other, so that the output terminals O1 to O4 of the plurality of power boards 100, 200, 300, 400 are connected in a mesh shape through the bus line 1, whereby the first power board 100 can be connected to the second power board 200, the third power board 300, and the fourth power board 400 to receive / supply the DC power between the second power board 200, the third power board 300, or the fourth power board 400, and the second power board 200 can be connected to the first power board 100, the third power board 300, and the fourth power board 400. 0 is connected to receive / supply the DC power between the first power board 100, the third power board 300 or the fourth power board 400, the third power board 300 can be connected to the first power board 100, the second power board 200 and the fourth power board 400 to receive / supply the DC power between the first power board 100, the second power board 200 or the fourth power board 400, the fourth power board 400 can be connected to the first power board 100, the second power board 200 and the third power board 300 to receive / supply the DC power between the first power board 100, the second power board 200 or the third power board 300.

[0307] As described above, the plurality of power boards 100 , 200 , 300 , 400 connected in a grid shape through the bus line 1 can realize the reception / supply of the DC power between the plurality of power boards 100 , 200 , 300 , 400 by opening and closing each of the plurality of circuit breakers 130 .

[0308] For example, when the first circuit breaker 130a of the circuit connected between the first power board 100 and the third power board 300 is closed, the DC power supply between the first power board 100 and the third power board 300 can be received / supplied; when the second circuit breaker 130b of the circuit connected between the first power board 100 and the second power board 200 is closed, the DC power supply between the first power board 100 and the second power board 200 can be received / supplied; when the third circuit breaker 130c of the circuit connected between the first power board 100 and the fourth power board 400 is closed, the DC power supply between the first power board 100 and the fourth power board 400 can be received / supplied. When the fourth circuit breaker 130d of the circuit connected between the second power board 200 and the third power board 300 is closed, the reception / supply of the DC power between the second power board 200 and the third power board 300 can be realized; when the fifth circuit breaker 130e of the circuit connected between the third power board 300 and the fourth power board 400 is closed, the reception / supply of the DC power between the third power board 300 and the fourth power board 400 can be realized; when the sixth circuit breaker 130f of the circuit connected between the second power board 200 and the fourth power board 400 is closed, the reception / supply of the DC power between the second power board 200 and the fourth power board 400 can be realized.

[0309] Each of the plurality of power boards 100 , 200 , 300 , 400 can control and monitor operations of the plurality of first power conversion devices 110 , 210 , 310 , 410 and one or more second power conversion devices 120 , 220 , 320 , 420 included therein.

[0310] Each of the plurality of power boards 100, 200, 300, 400 can request the control device 600 to perform opening and closing control on each of the first to fourth circuit breakers 130a to 130d based on the results of controlling and monitoring the actions of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein.

[0311] Each of the plurality of power boards 100, 200, 300, 400 can transmit the results of controlling and monitoring the actions of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein to the control device 600.

[0312] Each of the plurality of power boards 100, 200, 300, 400 can detect the status of the DC power supply and the driving power supply by controlling and monitoring the operation of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein.

[0313] Each of the plurality of power boards 100 , 200 , 300 , 400 may detect the states of the DC power source and the driving power source, and transmit the detection result to the control device 600 .

[0314] As described above, the control device 600 that controls the plurality of power boards 100, 200, 300, 400 can determine the supply target power board among the plurality of power boards 100, 200, 300, 400 that supplies the DC power to the abnormality occurring power board, close the circuit breakers 130a to 130f connected to the abnormality occurring power board and the supply target power board, and control to supply the DC power from the supply target power board to the abnormality occurring power board through the bus line 1.

[0315] The control device 600 can open the plurality of circuit breakers 130 under normal circumstances, and when the supply target power board supplies the DC power to the abnormal power board, close the circuit breakers 130a to 130f among the plurality of circuit breakers 130 that are connected to the abnormal power board and the supply target power board.

[0316] That is, the control device 600 can open the plurality of circuit breakers 130 under normal circumstances, and when the abnormal power board occurs among the plurality of power boards 100, 200, 300, 400, 500 and the supply target power board is determined, any circuit breaker 130a to 130f connected to the abnormal power board and the determined supply target power board can be closed.

[0317] As described above, the power supply system 1000 that determines the target power board and controls to supply the DC power through the bus line 1 can also be used in the same manner as in the example Figure 1a or Figure 1b The forms shown are implemented in different forms.

[0318] The following describes a specific control embodiment of the power supply system 1000, and for ease of description, the control embodiment of the power supply system 1000 is described based on the Figure 1a The description will be made with reference to the power supply system 1000 shown in FIG.

[0319] The operation example of the power supply system 1000 including the plurality of power boards 100, 200, 300, 400 as described above can be as follows: Figures 3 to 6 shown.

[0320] like Figures 3 to 6 The operation example shown is an operation example in which the power supply system 1000 includes five power boards 100, 200, 300, 400, 500. The power supply system 1000 may also include a plurality of power boards 100, 200, 300, 400, 500 that are less than five or more than five.

[0321] Figure 3 This is a situation where each of the plurality of power boards 100, 200, 300, 400, 500 receives power from the system power supply G in the plurality of power supply sources 10, in which case the power supply from the bypass power supply P and the battery power supply B is cut off, power can be received through the system power supply G, and the power is sequentially converted into the DC power supply and the drive power supply and supplied to each of the loads 20.

[0322] like Figure 3 The operation example shown is a case of normal operation in which the power is received from the system power supply G to operate. The normal operation of the power supply system 1000 can be performed in this manner.

[0323] Figure 4 This is a situation where each of the plurality of power boards 100, 200, 300, 400, 500 receives power from the bypass power supply P in the plurality of power supply sources 10. This situation may correspond to a situation where an abnormality occurs in the system power supply G. In this case, the power supply from the system power supply G and the battery power supply B is cut off, and power can be received through the bypass power supply P, and the power is sequentially converted into the DC power supply and the drive power supply and supplied to each of the loads 20.

[0324] like Figure 4 The operation example shown is a case of a special operation in which the power is received from the bypass power source P to operate, and the special operation of the power supply system 1000 can be performed in this manner.

[0325] Figure 5This is a situation where each of the multiple power boards 100, 200, 300, 400, 500 receives power from the battery power supply B in the multiple power supply sources 10. This situation may correspond to a situation where an abnormality occurs in the system power supply G and the bypass power supply P. In this case, the power supply from the system power supply G and the bypass power supply P is cut off, and power can be received through the battery power supply B, and the power is sequentially converted into the DC power supply and the drive power supply and supplied to each of the loads 20.

[0326] like Figure 5 The operation example shown is a case of power-off operation in which the power is supplied from the battery power source B. The power-off operation of the power supply system 1000 can be performed in this manner.

[0327] Figure 6 This is a situation where each of the multiple power boards 100, 200, 300, 400, 500 receives power from the emergency power supply A in the multiple power supply sources 10. This situation can correspond to the situation where an abnormality occurs in the system power supply G, the bypass power supply P, and the battery power supply B. In this case, the power supply from the system power supply G, the bypass power supply P, and the battery power supply B is cut off, and the emergency power supply A can directly supply the driving power to each of the loads 20.

[0328] like Figure 6 The operation example shown is a case of emergency operation in which the power is received from the emergency power supply A to operate. The emergency operation of the power supply system 1000 can be performed in this manner.

[0329] As described above, in the power supply system 1000, each of the plurality of power strips 100, 200, 300, 400, 500 can receive power from the same power supply source to operate, or each of the plurality of power strips 100, 200, 300, 400, 500 can also selectively receive power from any one of the plurality of power supply sources 10 to operate.

[0330] For example, the first power board 100 and the second power board 200 can receive power from the system power supply G to operate, the third power board 300 and the fourth power board 400 can receive power from the bypass power supply P to operate, and the fifth power board 500 can receive power from the battery power supply B to operate.

[0331] In addition, each of the plurality of power strips 100 , 200 , 300 , 400 , 500 may also receive power from at least one power supply source 10 to operate.

[0332] For example, when an abnormality occurs in the first power board 100 and the DC power is supplied from the second power board 200 to the first power board 100, the second power board 200 can convert the power received from the system power supply G into the DC power through the 2-1 conversion device 210#1 and transmit it to each of the more than one second power conversion devices 220, and can further receive power from the bypass power supply P and convert it into the DC power through the 2-3 conversion device 210#3, and transmit the DC power converted by the 2-3 conversion device 210#3 to each of the more than one second power conversion devices 120 of the first power board 100 through the bus line 1.

[0333] In the example case described above, the first circuit breaker 130a of the first power strip 100 and the second circuit breaker 230b of the second power strip 200 can be closed so that the first power strip 100 and the second power strip 200 are connected to the bus line 1, thereby supplying the DC power from the second power strip 200 to the first power strip 100 through the bus line 1.

[0334] As described above, each of the plurality of power strips 100, 200, 300, 400, 500 receives power from more than one power supply source 10 to operate, thereby enabling power supply between the plurality of power strips 100, 200, 300, 400, 500, that is, enabling UPS functions between the plurality of power strips 100, 200, 300, 400, 500.

[0335] As described above, the plurality of power boards 100 , 200 , 300 , 400 , 500 that operate in a manner of converting and supplying the DC power may be controlled by the control device 600 .

[0336] The control device 600 can communicate with each of the plurality of power strips 100, 200, 300, 400, 500 to control each of the plurality of power strips 100, 200, 300, 400, 500 based on status information received from each of the plurality of power strips 100, 200, 300, 400, 500.

[0337] For example, the conversion and supply of the DC power and the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300, 400, 500 can be controlled based on the status information of the DC power and the driving power received from each of the plurality of power boards 100, 200, 300, 400, 500.

[0338] The control device 600 can communicate with each of the plurality of power strips 100, 200, 300, 400, 500 to control the conversion and supply of the driving power of each of the plurality of power strips 100, 200, 300, 400, 500 based on the status information received from each of the plurality of power strips 100, 200, 300, 400, 500, or control the first and second circuit breakers 130, 230, 330, 430, 530 included in each of the plurality of power strips 100, 200, 300, 400, 500.

[0339] In addition, the control device 600 can also sense the states of the plurality of power supply sources 10 and the loads 20 or receive information about the states of the plurality of power supply sources 10 and the loads 20 from an external communication unit, and based on the states of the plurality of power supply sources 10 and the loads 20, control the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300, 400, 500, or control the first and second circuit breakers 130, 230, 330, 430, 530 included in each of the plurality of power boards 100, 200, 300, 400, 500.

[0340] In this case, the control device 600 can transmit control instructions regarding the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300, 400, 500 or the control of the first and second circuit breakers 130, 230, 330, 430, 530 included in each of the multiple power boards 100, 200, 300, 400, 500 to each of the multiple power boards 100, 200, 300, 400, 500, so as to perform control based on the control instructions through the control unit 140, 240, 340, 440, 540 included in each of the multiple power boards 100, 200, 300, 400, 500.

[0341] For example, when an abnormality occurs in the system power supply G that is supplying power to the plurality of power boards 100, 200, 300, 400, 500 as a whole, a control instruction can be transmitted to the control unit 140, 240, 340, 440, 540 included in each of the plurality of power boards 100, 200, 300, 400, 500 to control the first and second circuit breakers 130, 230, 330, 430, 530 to open the circuit to cut off the power supply from the system power supply G and switch to other supply sources, and receive power from a power source other than the system power supply G to convert and supply the DC power supply, so that control can be performed to open the circuit of each of the first and second circuit breakers 130, 230, 330, 430, 530, receive power from the bypass power supply P or the battery power supply B to convert and supply the DC power supply.

[0342] As described above, the control device 600 that controls the reception / supply of the DC power by controlling the opening and closing of the plurality of circuit breakers 130 may be configured as follows: Figure 7 The process shown performs control to supply the DC power to the abnormality occurring power supply board.

[0343] like Figure 7 As shown, the control device 600 can determine the supply target power board (P100) among the multiple power boards 100, 200, 300, 400 that supplies the DC power to the abnormal power board where the abnormality occurs, close one or more circuit breakers among the multiple circuit breakers 130 connected to the abnormal power board and the supply target power board (P200), and supply the DC power from the supply target power board to the abnormal power board through the bus line 1 (P300).

[0344] The control device 600 may determine the supply target power board from the remaining power boards except the abnormality-occurring power board.

[0345] That is, when determining the supply target power board (P100), the control device 600 can determine the supply target power board (P100) from the remaining power boards among the plurality of power boards 100, 200, 300, 400 except the abnormal power board.

[0346] For example, when the first power strip 100 is the power strip where the abnormality occurs, the supply target power strip (P100) can be determined from among the second to fourth power strips 200, 300, and 400.

[0347] The control device 600 can determine the supply order of the remaining power boards according to a preset judgment standard, and then determine the supply target power board according to the supply order.

[0348] That is, when determining the supply target power board (P100), the control device 600 may determine the supply order of the remaining power boards according to the determination criteria, and then determine the supply target power board (P100) according to the supply order.

[0349] The supply order may be an order in which the DC power is supplied to the abnormality occurrence power board.

[0350] For example, the order may be favorable for supplying the DC power to the abnormality-occurring power board.

[0351] The judgment standard may be a standard for judging the supply sequence according to one or more of a state of each of the remaining power boards and a position where each of the remaining power boards is arranged.

[0352] That is, the supply sequence may be determined based on at least one of a state of each of the remaining power boards and a position where each of the remaining power boards is disposed.

[0353] Accordingly, the control device 600 can determine the supply order of the remaining power boards according to one or more of the states of each of the remaining power boards and the positions where each of the remaining power boards is configured, and then determine the supply target power board (P100) according to the supply order.

[0354] Here, the supply target power board may be a power board with the highest priority in the supply priority.

[0355] Accordingly, the control device 600 can determine the power strip corresponding to the highest priority in the supply priority as the supply target power strip (P100).

[0356] That is, the control device 600 can evaluate the supply order of the remaining power boards according to the judgment standard, and judge the power board with the highest supply order corresponding to the evaluation result as the supply object power board (P100), so as to control the supply object power board to supply the DC power (P300) to the abnormal power board through the bus line 1.

[0357] The control device 600 can determine the supply sequence according to the status of the plurality of power supply sources 10 of each of the remaining power boards.

[0358] For example, the supply sequence may be determined based on the power storage state of the battery power source 10#2 of each of the remaining power boards, the rated value of the second AC power source 10#3, and the like.

[0359] The control device 600 can determine the power status of the battery power source 10#2 in the plurality of power supply sources 10 of each of the remaining power boards, so as to determine the supply sequence according to the determined power status.

[0360] The power supply status may be a status of available capacity of the battery power supply 10 # 2 .

[0361] The control device 600 may determine the supply sequence according to the order of the available capacity of each of the remaining power boards.

[0362] To give a more specific example, when the first power board 100 is the power board where the abnormality occurs, when the battery power supply 10#2 of the second power board 200 is charged 100%, the battery power supply 10#2 of the third power board 300 is charged 80%, and the battery power supply 10#2 of the fourth power board 400 is charged 90%, the supply order can be determined according to the charging status in the order of the second power board 200, the fourth power board 400 and the third power board 300.

[0363] The control device 600 can determine the supply sequence according to the proximity of the position of each of the remaining power boards to the power board where the abnormality occurred.

[0364] The control device 600 may determine the supply sequence according to the proximity of each of the remaining power boards to the power board where the abnormality occurred.

[0365] That is, the control device 600 may determine the supply sequence according to the order of proximity to the power boards where the abnormality occurs.

[0366] To give a more specific example, when the first power board 100 is the power board where the abnormality occurs, when the second power board 200 and the third power board 300 are arranged at the positions closest to the first power board 100 and the fourth power board 300 is arranged at the opposite position of the first power board 100 relative to the third power board 300, the supply order can be determined according to the proximity in the order of the second power board 200 and the third power board 300 in parallel and the fourth power board 400.

[0367] The control device 600 can determine the supply order based on one or more of the states of the multiple power supply sources 10 of each of the remaining power boards and the proximity of the position of each of the remaining power boards to the power board where the abnormality occurs, thereby determining the power board with the highest supply order as the supply target power board (P100).

[0368] After determining the target power board (P100), the control device 600 may close (P200) the circuit breaker connected to the abnormality-occurring power board and the determined target power board.

[0369] For example, when the power board where the abnormality occurs is the first power board 100 and the supply object power board is judged to be the second power board 200 (P100), the first circuit breaker 130a of the first power board 100 connected to the first power board 100 and the second power board 200 and the second circuit breaker 130b of the second power board 200 can be closed respectively (P200).

[0370] Accordingly, the first power board 100 and the second power board 200 are connected to the bus line 1, the second power board 200 transmits the DC power to the bus line 1 through the second output end, and the first power board 100 receives the DC power from the bus line 1 through the power end, thereby realizing the supply of the DC power from the second power board 200 to the first power board 100 (P300).

[0371] That is, in Figure 1a In the case of the power supply system 1000 shown, the first circuit breaker 130a, 230a, 330a, 430a of the abnormality-occurring power board and the second circuit breaker 130b, 230b, 330b, 430b of the target power board can be closed.

[0372] In the situation as described above, the connection between the abnormality occurring power board and the supply target power board can be achieved through their respective first circuit breakers and second circuit breakers. By making it easy to open and close the circuit breakers corresponding to the abnormality occurring power board and the supply target power board, the connection and disconnection between the bus line 1 and the plurality of power boards 100, 200, 300, 400 can be facilitated, and the supply of the DC power based on this can be facilitated.

[0373] Or, in Figure 1bIn the case of the power supply system 1000 shown in the figure, when the power board where the abnormality occurs is the first power board 100 and the supply object power board is judged to be the fourth power board 400 (P100), the third circuit breaker 130c connected to the first power board 100 and the fourth power board 400 can be closed (P200).

[0374] Accordingly, the first power board 100 and the fourth power board 400 are connected to the bus line 1, the fourth power board 400 transmits the DC power to the first power board 100 through the bus line 1, and the first power board 100 receives the DC power through the bus line 1, thereby realizing the supply of the DC power from the fourth power board 400 to the first power board 100 (P300).

[0375] That is, in Figure 1b In the case of the power supply system 1000 shown, any one of the circuit breakers 130a, 130b, 130c, 130d, 130e, and 130f connected to the abnormality-occurring power board and the supply target power board can be closed (P200).

[0376] In the situation as described above, the connection between the abnormality occurring power board and the supply target power board can be achieved through a circuit breaker. By making it easy to open and close the circuit breakers corresponding to the abnormality occurring power board and the supply target power board, it is possible to facilitate the judgment of the supply target power board based on the judgment of the supply sequence and the supply of the DC power supply.

[0377] When an abnormality occurs in the supply object power board that is supplying the DC power to the abnormality occurring power board, the control device 600 can determine the supply replacement power board for replacing the supply object power board according to the supply order, replace the supply object power board with the supply replacement power board, and control to supply the DC power from the supply replacement power board to the abnormality occurring power board.

[0378] That is, when an abnormality occurs in the supply object power board, the control device 600 can determine the power board corresponding to the next sequence of the supply object power board in the determined supply sequence as the supply replacement power board, thereby replacing the supply object power board with the supply replacement power board.

[0379] For example, the first power board 100 is the power board where the abnormality occurs, and the supply order is judged to be the order of the third power board 300, the fourth power board 400 and the second power board 200. During the period when the third power board 300 is used as the supply object power board to supply the DC power to the first power board 100, when an abnormality occurs in the second AC power supply 10#2 that supplies the DC power to the first power board 100, the fourth power board 400 corresponding to the next order of the third power board 300 in the supply order can be judged as the supply replacement power board, so that the third power board 300 is switched to the fourth power board 400, so that the fourth power board 400 supplies the DC power to the first power board 100.

[0380] When there are multiple abnormal power boards, the control device 600, which determines the supply target power boards in the manner described above and controls to supply the DC power to the abnormal power boards, can determine the multiple supply target power boards corresponding to each of the multiple abnormal power boards, close the multiple circuit breakers 130 connected to the multiple abnormal power boards and the multiple supply target power boards, and control to supply the DC power from each of the multiple supply target power boards to the multiple abnormal power boards through the bus line 1.

[0381] For example, when the first power board 100 and the third power board 300 are the power boards where the abnormality occurs, the supply target power board corresponding to the first power board 100 and the supply target power board corresponding to the third power board 300 can be judged, and the circuit breakers connected to the first power board 100 and the supply target power board corresponding to the first power board 100 and the circuit breakers connected to the third power board 300 and the supply target power board corresponding to the third power board 300 are closed respectively, and control is performed so that the first power board 100 and the third power board 300 respectively receive the DC power from their respective supply target power boards through the bus line 1.

[0382] The following will refer to Figures 8 to 15 An example of a specific operation of the power supply system 1000 described above will be described.

[0383] Figures 8 to 15 The example diagram shows an example of an operation process caused by an abnormality when the plurality of power boards 100, 200, 300, 400, and 500 are set to five in sequence. The specific implementation form of the power supply system 1000 can also be Figures 8 to 15The invention may be implemented in various forms other than the examples shown.

[0384] Figure 8 The example shown in FIG. 1 is an example in which, due to an abnormality in the first AC power supply 10#1 of the first power supply board 100 of the plurality of power supply boards 100, 200, 300, 400, 500, the first AC power supply 10#1 is switched to the second AC power supply 10#3, thereby transmitting the DC power to one or more second power conversion devices 110, such as Fig. 9 As shown, when the second AC power source 10#3 is abnormal and cannot transmit the DC power to more than one second power conversion device 110, as shown in Fig.10 As shown, the first circuit breaker 130a of the first power board 100 can be closed, and the second circuit breaker 230b of the second power board 200 adjacent to the first power board 100 can be closed, so that the DC power can be transmitted to one or more second power conversion devices 110 through the conversion device 210#3 corresponding to the second output end of the second power board 200.

[0385] If, such as Fig.11 As shown, when the second power board 200 receives power from the second AC power supply 10#3, and the DC power is supplied to one or more second power conversion devices 220 by the conversion device 210#3 connected to the second AC power supply 10#3 and corresponding to the second output terminal, since the DC power cannot be received from the second power board 200, the second circuit breaker 330b of the third power board 300 adjacent to the first power board 100 other than the second power board 200 can be closed, so that the DC power is transmitted to one or more second power conversion devices 110 through the conversion device 310#3 corresponding to the second output terminal of the third power board 300.

[0386] In such Fig.11 In the state shown, Fig.12 As shown, when the first AC power supply 10#1 of the second power board 200 and the conversion device 210#3 connected to the second AC power supply 10#3 are abnormal, since the bus line 1 is in a state of supplying the DC power from the third power board 300 to the first power board 100, the second power board 200 cannot receive the DC power from other power boards, so that Fig.13 As shown, the second power board 200 can switch the second AC power source 10#3 to a battery power source 10#2, thereby transmitting the DC power to more than one second power conversion device 210 through a conversion device 210#2 connected to the battery power source 10#2.

[0387] If, in such Fig.13 In the state shown, Fig.14 As shown, when the battery power source 10#2 of the second power board 200 is abnormal, the plurality of power supply sources 10 supplying power to the second power board 200 are all in a state of being unable to supply power, so that Fig.15 As shown, the second power board 200 cuts off the battery power 10#2 and switches to the emergency power 10', so that the driving power can be directly transmitted from the emergency power 10' to the load 20.

[0388] As described above, when one or more of the plurality of power strips 100, 200, 300, 400, 500 generates an abnormality, the power supply system 1000 can control the first and second circuit breakers 130, 230, 330, 430, 530, or switch the power supply of the plurality of power supply sources 10 according to the state of each of the plurality of power strips 100, 200, 300, 400, 500, thereby not only being able to perform the power supply between the plurality of power strips 100, 200, 300, 400, 500, that is, the UPS function between the plurality of power strips 100, 200, 300, 400, 500, but also being able to enable each of the plurality of power strips 100, 200, 300, 400, 500 to operate uninterruptedly without cutting off the power supply.

[0389] Therefore, in the power supply system 1000, even if various abnormal situations occur in the system, power supply to the load can be maintained without interruption, and appropriate and stable power supply responses can be made to various abnormal situations occurring in the system.

[0390] Hereinafter, the control method of the power supply system of the present invention will be described, and the parts overlapping with the above contents will be omitted as much as possible.

[0391] In addition, FIG. 1 to FIG. 2 are referred to in the description of the power supply system 1000. Fig.15 Based on the above, further referring to the embodiment of the control method of the power supply system Fig.16 and Fig.17 Explain and Fig.16 and Fig.17 Reference numerals not designated in the drawings will be used in FIGS. Fig.15 The reference numerals shown in the figure replace the description.

[0392] The embodiments of the control method of the power supply system described below may be implemented independently, or may be implemented in combination with the embodiments of the power supply system 1000 described above.

[0393] The control method of the power supply system (hereinafter referred to as the control method) may be implemented in a combination or in separate forms of the above-mentioned embodiments and the embodiments described later.

[0394] The control method may be a method for controlling a power supply system including a plurality of power modules, a control method for the power supply system, a method for operating the power supply system, or an operating method for the power supply system.

[0395] That is, the control method may be a method applied to the power supply system.

[0396] The control method may be a control method of a power supply system that includes a plurality of packaged power supply devices and supplies power.

[0397] Here, the power supply device may be a power board encapsulating a plurality of power control devices.

[0398] The control method may be the control method of the power supply system 1000 described above.

[0399] In addition, the control method may also be a control method of a power supply system other than the power supply system 1000 described above.

[0400] For the sake of convenience, the following description will be given based on an example in which the control method is the control method of the power supply system 1000 described above.

[0401] The control method is as follows Figure 1a or Figure 1b The control method of the power supply system 1000 shown in the figure, the power supply system 1000 comprises: a load 20; a plurality of power boards 100, 200, 300, 400, converting the power received from each of the plurality of power supply sources 10 into a DC power, converting the DC power into a driving power for driving the load 20, so as to supply the driving power to the load 20; a bus line 1, connected to each of the plurality of power boards 100, 200, 300, 400; The plurality of power boards 100, 200, 300, 400 are connected in common through the output terminal of the DC power supply to transmit the DC power output from each of the plurality of power boards 100, 200, 300, 400; a plurality of circuit breakers 130, 230, 330, 430, connected to the output terminal to limit the connection between the plurality of power boards 100, 200, 300, 400 through the bus line 1; and a control device 600, monitoring and controlling the plurality of power boards 100, 200, 300, 400, as shown in FIG. Fig.16As shown, the method includes: when an abnormality occurs in one or more of the plurality of power boards 100, 200, 300, 400, a step (S10) of determining the target power board that supplies the DC power; a step (S30) of closing one or more of the plurality of circuit breakers 130, 230, 330, 430 that are connected to the abnormality-occurring power board and the target power board; and a step (S40) of the target power board supplying the DC power to the abnormality-occurring power board via the bus line 1.

[0402] Here, the control method may further include a step of transmitting information on the reception / supply of the DC power to the determined abnormality-occurring power board and the supply-target power board, respectively ( S20 ).

[0403] The control method may be executed by the control device 600 .

[0404] That is, the control method may be a method in which the control device 600 included in the power supply system 1000 controls the power supply system 1000 .

[0405] The control method may be a method in which the control device 600 controls the power supply and operation of each of the plurality of power strips 100 , 200 , 300 , 400 in the power supply system 1000 .

[0406] The overall action / operation of the power supply system 1000 for executing the control method may be implemented as in the above-described embodiment of the power supply system 1000 .

[0407] The control method may control the operation of each of the plurality of power strips 100 , 200 , 300 , 400 according to the power supply status of each of the plurality of power strips 100 , 200 , 300 , 400 .

[0408] The control method includes the judging step (S10), the transmitting step (S20), the closing step (S30) and the supplying step (S40) to control the power supply and operation of each of the plurality of power strips 100, 200, 300, 400.

[0409] That is, Fig.16 As shown, the power supply system 1000 may also perform the receiving / supplying of the DC power in the order of the determining step (S10), the transmitting step (S20), the closing step (S30) and the supplying step (S40).

[0410] Or, if Fig.16As shown, the control device 600 may also control the power supply system 1000 in the order of the determination step (S10), the transmission step (S20), the closing step (S30) and the supply step (S40).

[0411] In the control method, when controlling the operation of each of the plurality of power boards 100, 200, 300, 400, the operation of each of the plurality of power boards 100, 200, 300, 400 can be controlled to convert the power received from each of the plurality of power supply sources 10 into the DC power, and supply the DC power to the load 20.

[0412] In the control method, when controlling the operation of each of the plurality of power boards 100, 200, 300, 400, each of the plurality of power boards 100, 200, 300, 400 can be controlled to receive power from the first AC power supply 10#1 and the second AC power supply 10#3 in turn, and during the switching of the power supply of the first AC power supply 10#1 or the second AC power supply 10#3, the power supply can be maintained by the battery power supply 10#2.

[0413] The plurality of power supply sources 10 may further include an emergency power supply 10#4, which supplies emergency generated power to the load 20 when the power supply of the first AC power supply 10#1, the second AC power supply 10#3 and the battery power supply 10#2 is interrupted.

[0414] Thus, when the power supply of the battery power source 10#2 in each of the plurality of power boards 100, 200, 300, 400 is interrupted, power can be supplied to the load 20 through the emergency power source 10#4 to maintain the power supply to the load 20.

[0415] In the control method, when controlling the operation of each of the plurality of power boards 100, 200, 300, 400, when the states of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 that receives power from the first AC power supply 10#1 correspond to a normal state, power can be received from the first AC power supply 10#1 and the DC power can be converted by the first conversion device 110#1, 210#1, 310#1, 410#1.

[0416] In the control method, when controlling the operation of each of the plurality of power boards 100, 200, 300, 400, in the event that an abnormality occurs in one or more of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 and the power supply is interrupted, the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 can be switched to the second AC power supply 10#3 and the second conversion device 110#3, 210#3, 310#3, 410#3 that receives power from the second AC power supply 10#3.

[0417] In the control method, when controlling the operation of each of the plurality of power boards 100, 200, 300, 400, in the event that an abnormality occurs in one or more of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 and the power supply is switched to the second AC power supply 10#3 and the second conversion device 110#2, 210#2, 310#2, 410#2, power can be received from the battery power supply 10#2 during the period when the power supply is switched to the second AC power supply 10#3 and the second conversion device 110#3, 210#3, 310#3, 410#3, and the DC power can be converted by the second conversion device 110#2, 210#2, 310#2, 410#2 that receives power from the battery power supply 10#2.

[0418] In the control method, when controlling the operation of each of the plurality of power boards 100, 200, 300, 400, when the second circuit breaker 130b, 230b, 330b, 430b is in a closed state and one or more of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 is abnormal, power can be received from the battery power supply 10#2, and the DC power can be converted through the battery power supply 10#2 and the second conversion device 110#2, 210#2, 310#2, 410#2 until the power supply is restored.

[0419] When controlling the operation of each of the plurality of power boards 100 , 200 , 300 , 400 , the control method may include: a step of determining a power board where an abnormality occurs among the plurality of power boards 100 , 200 , 300 , 400 .

[0420] In the step of determining the abnormal power board among the plurality of power boards 100, 200, 300, 400, the power board among the plurality of power boards where the power supply from the first AC power source and the second AC power source is abnormal can be determined as the abnormal power board.

[0421] In the judgment step (S10), it can be judged that during the operation of controlling each of the multiple power boards 100, 200, 300, 400, the supply target power board among the multiple power boards 100, 200, 300, 400 is going to supply the DC power to the abnormal power board where the abnormality occurs.

[0422] In the determination step (S10), the supply order of the remaining power boards except the abnormality-occurring power board may be determined, and the supply target power board may be determined based on the supply order.

[0423] That is, in the judging step (S10), the supply target power board can be judged by judging the supply order of the power boards remaining in the plurality of power boards 100, 200, 300, 400 except the abnormality-occurring power board.

[0424] In the judging step (S10), the supply sequence may be judged according to at least one of a state of each of the remaining power boards and a position where each of the remaining power boards is arranged.

[0425] That is, in the judgment step (S10), the supply order can be judged based on one or more of the state of each of the remaining power boards and the position where each of the remaining power boards is configured, and the supply target power board can be judged based on the supply order.

[0426] In the determining step (S10), the supply sequence may be determined according to the states of the plurality of power supply sources of each of the remaining power boards.

[0427] In the determination step (S10), the state of the available capacity of the battery power in the plurality of the power supply sources of each of the remaining power boards may be determined, so as to determine the supply sequence according to the determined power state.

[0428] In the judging step (S10), the supply order may be judged according to the order of the available capacity of each of the remaining power boards.

[0429] For example, when the first power board 100 is the power board where the abnormality occurs, when the battery power supply 10#2 of the second power board 200 is charged 100%, the battery power supply 10#2 of the third power board 300 is charged 80%, and the battery power supply 10#2 of the fourth power board 400 is charged 90%, the supply order can be determined according to the charging status in the order of the second power board 200, the fourth power board 400 and the third power board 300.

[0430] In the judging step (S10), the supply sequence may be judged according to the proximity of the position of each of the remaining power boards to the power board where the abnormality occurred.

[0431] In the judging step (S10), the supply sequence may be judged according to the proximity of each of the remaining power boards to the power board where the abnormality occurred.

[0432] For example, when the first power board 100 is the power board where the abnormality occurs, when the second power board 200 and the third power board 300 are arranged at the positions closest to the first power board 100 and the fourth power board 300 is arranged at the opposite position of the first power board 100 relative to the third power board 300, the supply order can be determined according to the proximity in the order of the second power board 200 and the third power board 300 in parallel and the fourth power board 400.

[0433] In the judging step (S10), the supply order of the remaining power boards can be judged according to the status of the plurality of power supply sources of each of the remaining power boards and the proximity of the position of each of the remaining power boards to the power board where the abnormality occurred.

[0434] In the determination step (S10), the power board corresponding to the highest priority in the supply priority may be determined as the supply target power board.

[0435] As described above, the control method determines the supply target power board in the determination step ( S10 ) to control the supply target power board to supply the DC power to the abnormality occurring power board.

[0436] In such Figure 1a In the case of the power supply system 1000 shown in the figure, the control method for determining the power board to be supplied in the above-mentioned manner can be performed in the following order.

[0437] In the transmission step ( S20 ), information on the reception / supply of the DC power may be transmitted to the abnormality-occurring power board and the supply-target power board determined in the determination step ( S10 ), respectively.

[0438] In the transmission step ( S20 ), reception request information regarding reception of the DC power may be transmitted to the abnormality occurrence power board, and supply request information regarding supply of the DC power may be transmitted to the supply target power board.

[0439] In the transmission step (S20), the reception request information for controlling the abnormality occurring power board to close the first circuit breaker 130a, 230a, 330a, 430a to receive the DC power from the bus line 1 through the power supply end can be transmitted to the abnormality occurring power board.

[0440] In the transmission step (S20), the supply request information for controlling the supply target power board to close the second circuit breakers 130b, 230b, 330b, 430b to supply the DC power from the second output terminal to the bus line 1 may be transmitted to the supply target power board.

[0441] In the closing step (S30), the first circuit breaker 130a, 230a, 330a, 430a of the abnormality-occurring power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply object power board can be closed according to the receiving request information and the supply request information transmitted to the abnormality-occurring power board and the supply object power board respectively in the transmission step (S20).

[0442] In the supply step (S40), since the first circuit breaker 130a, 230a, 330a, 430a of the abnormality occurring power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply object power board are closed in the closing step (S30), the supply object power board can supply the DC power to the abnormality occurring power board through the bus line 1.

[0443] In the supply step (S40), the abnormality-occurring power board may receive the DC power from the bus line 1 through the power supply terminal, and the supply target power board may supply the DC power to the bus line 1 from the second output terminal.

[0444] That is, in the supply step (S40), the supply target power board can supply the DC power to the bus line 1 from the second output terminal, and the abnormality occurring power board can receive the DC power from the bus line 1 through the power terminal.

[0445] As described above, in the supply step (S40), the supply object power board supplies the DC power from the second output end to the bus line 1, and the abnormal power board receives the DC power from the bus line 1 through the power end, thereby transmitting the DC power to one or more second power conversion devices 120, 220, 320, 420 of the abnormal power board, so that the driving power can be continuously supplied to the load 20 of the abnormal power board.

[0446] Therefore, the control method can control the power supply system 1000, so as to control the power supply between the multiple power boards 100, 200, 300, 400, that is, the execution of the UPS function between the multiple power boards 100, 200, 300, 400, so that even when various abnormal situations occur in the system (System), the power supply to the load can be maintained without interruption, and appropriate and stable power supply responses can be made for various abnormal situations occurring in the system (System).

[0447] In addition, in Figure 1b In the case of the power supply system 1000 shown, the control method may be executed in the order described below.

[0448] In the transmission step ( S20 ), information on the reception / supply of the DC power may be transmitted to the abnormality-occurring power board and the supply-target power board determined in the determination step ( S10 ), respectively.

[0449] In the transmission step ( S20 ), reception request information regarding reception of the DC power may be transmitted to the abnormality occurrence power board, and supply request information regarding supply of the DC power may be transmitted to the supply target power board.

[0450] In the transmission step ( S20 ), the reception request information for controlling the abnormality occurrence power supply board to receive the DC power from the bus line 1 may be transmitted to the abnormality occurrence power supply board.

[0451] In the transmission step ( S20 ), the supply request information for controlling the supply target power supply board to supply the DC power to the bus line 1 may be transmitted to the supply target power supply board.

[0452] In the closing step (S30), the circuit breakers 130a to 130f connected to the abnormality occurring power board and the supply target power board can be closed according to the receiving request information and the supply request information transmitted to the abnormality occurring power board and the supply target power board respectively in the transmission step (S20).

[0453] In the supply step (S40), since the circuit breakers 130a to 130f connected to the abnormality occurring power board and the supply target power board are closed in the closing step (S30), the supply target power board can supply the DC power to the abnormality occurring power board through the bus line 1.

[0454] In the supplying step ( S40 ), the abnormality occurrence power board may receive the DC power from the bus line 1 , and the supply target power board may supply the DC power to the bus line 1 .

[0455] That is, in the supply step ( S40 ), the supply target power board may supply the DC power to the bus line 1 , and the abnormality occurrence power board may receive the DC power from the bus line 1 .

[0456] As described above, in the supply step (S40), the supply object power board supplies the DC power to the bus line 1, and the abnormality occurring power board receives the DC power from the bus line 1, thereby transmitting the DC power to one or more second power conversion devices 120, 220, 320, 420 of the abnormality occurring power board, so that the driving power can be continuously supplied to the load 20 of the abnormality occurring power board.

[0457] Therefore, the control method can control the power supply system 1000, so as to control the power supply between the multiple power boards 100, 200, 300, 400, that is, the execution of the UPS function between the multiple power boards 100, 200, 300, 400, so that even when various abnormal situations occur in the system (System), the power supply to the load can be maintained without interruption, and appropriate and stable power supply responses can be made for various abnormal situations occurring in the system (System).

[0458] The control method for controlling the supply target power board to supply the DC power to the abnormality-occurring power board as described above is as follows: Fig.16 As shown, the method may further include: when an abnormality occurs in the supply target power board that is supplying the DC power to the abnormality-occurring power board, a step of replacing the supply target power board (S50).

[0459] like Fig.17As shown, the replacement step (S50) may include: a step (S51) of determining a supply replacement power board for replacing the supply object power board according to the supply sequence; a step (S52) of opening a circuit breaker connected to the supply object power board and closing a circuit breaker connected to the abnormal power board and the supply replacement power board; and a step (S53) of the supply replacement power board supplying the DC power to the abnormal power board through the bus line 1.

[0460] That is, in the replacement step (S50), when an abnormality occurs in the supply object power board, the power board corresponding to the next sequence of the supply object power board in the determined supply sequence can be judged as the supply replacement power board, thereby replacing the supply object power board with the supply replacement power board.

[0461] In the step of determining the supply replacement power board (S51), the power board corresponding to the next order of the supply target power board in the determined supply order may be determined as the supply replacement power board.

[0462] In the step of closing the circuit breaker connected to the supply replacement power board (S52), the circuit breaker connected to the supply object power board can be opened, and the circuit breaker connected to the abnormal power board and the supply replacement power board can be closed, thereby replacing the supply object power board with the supply replacement power board.

[0463] For example, the first power board 100 is the abnormality occurring power board, and the supply sequence is judged to be the order of the third power board 300, the fourth power board 400 and the second power board 200. During the period when the third power board 300 is used as the supply object power board to supply the DC power to the first power board 100, when an abnormality occurs in the second AC power supply 10#2 that supplies the DC power to the first power board 100, the fourth power board 400 corresponding to the next sequence of the third power board 300 in the supply sequence can be judged as the supply replacement power board, so that the third power board 300 is switched to the fourth power board 400 by opening the circuit breaker connecting the third power board 300 and the abnormality occurring power board and closing the circuit breaker connecting the abnormality occurring power board and the fourth power board 400, so that the DC power is supplied to the first power board 100 by the fourth power board 400.

[0464] The embodiments of the power supply device described below may be implemented independently, or may be implemented in combination with the embodiments of the power supply system described above or the control system to be described below.

[0465] The power supply device may be implemented in a combination or in a separate form of the embodiments described below.

[0466] The power supply device may be a module including a plurality of power control devices.

[0467] The power supply device may be a power supply device encapsulating a plurality of the power control devices.

[0468] For example, it may be a power board encapsulating a plurality of the power control devices.

[0469] The power supply device may be a packaged power board that is installed in buildings that require high power, such as power plants, workshops, factories, high-rise buildings, and apartments, to supply power.

[0470] In addition, the power supply device may also be a packaged power board arranged in any space.

[0471] A plurality of the power supply control devices may be encapsulated in the power supply device to supply power to a load.

[0472] like Figure 2a As shown, the power supply device 100 includes: a plurality of first power conversion devices 110, which convert the power received from each of the plurality of power supply sources 10 into a DC power supply; one or more second power conversion devices 120, which convert the DC power supply into a driving power supply to supply to a load 20; a first circuit breaker 130a, which is arranged between a power supply end of each of the plurality of first power conversion devices 110 connected to a switching unit for limiting the output of the DC power supply and a power supply end connected to an input end of the second power conversion device 120, and a bus line 1 connected to the power supply end so that the DC power supply passes therethrough, so as to connect the power supply end and the bus line 1 connected thereto. The DC power supply is connected or limited between the bus lines 1; a second circuit breaker 130b is configured between the second output end of any one of the plurality of first power conversion devices 110 and the bus line 1 to connect or limit the DC power supply between the second output end and the bus line 1; and a control unit 140 controls the operation of each of the plurality of first power conversion devices 110 and the second power conversion devices 120, and the opening and closing of each of the first and second circuit breakers 130 according to the state of the DC power supply, the driving power supply, the plurality of first power conversion devices 110 and at least one of the loads 20.

[0473] As described above, the power supply device 100 includes a plurality of the first power conversion devices 110, one or more of the second power conversion devices 120, the first circuit breaker 130a and the second circuit breaker 130b, and the control unit 140, so that the power received from the plurality of the supply sources 10 can be converted into the driving power and supplied to the load 20.

[0474] In the power supply device 100, when the DC power is received from the bus line 1, the control unit 140 closes the first circuit breaker 130a so that the power end is connected to the bus line 1, and when the DC power is supplied to the bus line 1, the control unit 140 closes the second circuit breaker 130b so that the second output end is connected to the bus line 1.

[0475] That is, the first circuit breaker 130a is closed when the power supply end receives the DC power from the bus line 1, and the second circuit breaker 130b is closed when the DC power is supplied from the second output end to the bus line 1.

[0476] As described above, in the power supply device 100, the first circuit breaker 130a will perform a closing action when receiving the DC power, and the second circuit breaker 130b will perform a closing action when supplying the DC power, thereby enabling the reception / supply of the DC power to be achieved by opening and closing the first circuit breaker 130a and the second circuit breaker 130b.

[0477] The specific structure of the power supply device 100 including the plurality of first power conversion devices 110, the one or more second power conversion devices 120, the first circuit breaker 130a and the second circuit breaker 130b, and the control unit 140 can be as follows: Fig.18 shown.

[0478] The plurality of power supply sources 10 that supply power to the power supply device 100 may be externally connected to each of the plurality of first power conversion devices 110 , thereby supplying power to each of the plurality of first power conversion devices 110 .

[0479] Each of the plurality of power supply sources 10 may be connected to each of the plurality of first power conversion devices 110 , so as to supply DC power or AC power to each of the plurality of first power conversion devices 110 .

[0480] The plurality of power supply sources 10 may include different power supply sources.

[0481] like Figure 2a and Fig.18As shown, the plurality of power supply sources 10 may include a first alternating current power source 10 # 1 and a second alternating current power source 10 # 3 that supply AC power.

[0482] The plurality of power supply sources 10 may further include a battery 10#2 for storing DC power.

[0483] Preferably, if Figure 2a and Fig.18 As shown, the plurality of power supply sources 10 may include three different power supply sources 10#1 to #3, and the three different power supply sources 10#1 to #3 may respectively be the first AC power source 10#1 for supplying AC power, the battery 10#2 for storing DC power, and the second AC power source 10#3 for supplying AC power.

[0484] Accordingly, the power supply device 100 can receive two AC power sources and one DC power source.

[0485] The first AC power source 10#1 may be a system power source G.

[0486] The first AC power source 10#1 may be a system power source G that supplies 440V AC power.

[0487] The second AC power source 10#3 may be a bypass power source P.

[0488] The second AC power source 10#3 may be a bypass power source P that supplies 440V AC power.

[0489] The battery 10#2 may be an emergency battery that stores DC power to supply the stored DC power in an emergency.

[0490] When an abnormality occurs in the first AC power source and the second AC power source, the battery 10 # 2 may supply the stored DC power to the supply device 100 .

[0491] Thus, when the supply of the DC power to the second power conversion device 120 is interrupted, the plurality of power supply sources 10 can supply the power stored in the battery 10 # 2 to the first power conversion device 110 while the supply of the DC power is restored.

[0492] Here, the situation in which the supply of the DC power supply is interrupted may be one or more of the situations in which the power supply of the first AC power supply 10#1 and the second AC power supply 10#3 is interrupted and the operation of the plurality of first power conversion devices 110 that receive power from the first AC power supply 10#1 and the second AC power supply 10#3 is interrupted.

[0493] After the supply of the DC power source is interrupted, the battery 10#2 may uninterruptedly supply the stored power to the first power conversion device 110 until the supply of the DC power source is switched and restored.

[0494] The uninterrupted supply means that the stored power is supplied to the first power conversion device 110 so that the power supply is not interrupted, that is, power failure does not occur.

[0495] Therefore, the supply device 100 can uninterruptedly supply power to the load 20 through the battery 10#2, and can realize uninterrupted power supply to the load 20.

[0496] The plurality of first power conversion devices 110 may be composed of a plurality of devices.

[0497] The first power conversion device 110 is a device that converts received power into DC power, for example, may be a converter.

[0498] The plurality of first power conversion devices 110 may include one or more of an AC / DC converter that converts AC power into DC power and a DC / DC converter that converts the level of DC power.

[0499] Corresponding to each of the plurality of power supply sources 10 , the plurality of first power conversion devices 110 may include three conversion devices 110 # 1 to # 3 .

[0500] Accordingly, the first AC power supply 10#1 can be connected to the first conversion device 110#1 to supply AC power to the first conversion device 110#1, the battery 10#2 can be connected to the second conversion device 110#2 to supply DC power to the second conversion device 110#2, and the second AC power supply 10#3 can be connected to the third conversion device 110#3 to supply AC power to the third conversion device 110#3.

[0501] The first conversion device 110#1 may be an AC / DC conversion device that converts AC power into DC power, the second conversion device 110#2 may be a DC / DC conversion device that converts the level of DC power, and the third conversion device 110#3 may be an AC / DC conversion device that converts AC power into DC power.

[0502] Each of the plurality of first power conversion devices 110 may include a switching unit for switching the connection at the front end and the back end, respectively.

[0503] The switching unit may be provided at each of an input terminal and an output terminal of each of the plurality of first power conversion devices 110 to limit switching of power input / output from the plurality of first power conversion devices 110 .

[0504] Here, the switching unit provided at the input end may be a circuit breaker that senses overcurrent and cuts off a circuit.

[0505] More specifically, an AC air circuit breaker (ACB: Air Circuit Breaker) can be provided at the input end of the first conversion device 110#1 and the third conversion device 110#3 that receive AC power from the first AC power source 10#1 and the second AC power source 10#3, and a DC distribution circuit breaker (MCCB: Molded Circuit Breaker) can be provided at the input end of the second conversion device 110#2 that receives DC power from the battery 10#2.

[0506] The switching unit may switch on and off the connection of the plurality of first power conversion devices 110 according to the operations of the plurality of first power conversion devices 110 .

[0507] For example, when power is not received from the plurality of power supply sources 10 , the switch unit provided at each of the input terminal and the output terminal is opened to disconnect the corresponding conversion device 110 .

[0508] The output end may be divided into the power supply end and the second output end.

[0509] That is, the power supply terminal and the second output terminal of the plurality of first power conversion devices 110 may be separated, so that the DC power may be output from the power supply terminal and the second output terminal, respectively.

[0510] The power supply end may be connected to form a circuit by the output end of each of the plurality of first power conversion devices 110 .

[0511] Thus, the power supply terminal may be a circuit commonly connected to the output of each of the plurality of first power conversion devices 110 so that the DC power output from the plurality of first power conversion devices 110 flows through.

[0512] The power supply end may be connected to form a circuit by the output end of each of the plurality of first power conversion devices 110 .

[0513] Thus, the power supply terminal may be a circuit commonly connected to the output of each of the plurality of first power conversion devices 110 so that the DC power output from the plurality of first power conversion devices 110 flows through.

[0514] The DC power output from any one of the plurality of first power conversion devices 110 may flow through the power terminal.

[0515] The power supply terminal may be connected to the bus line 1 and an input terminal of the second power conversion device 120 to output the DC power to the bus line 1 or the second power conversion device 120 .

[0516] The second output terminal may be an output terminal of any one of the plurality of first power conversion devices 110 separated from the power supply terminal.

[0517] Thus, the second output terminal may be a circuit that is not connected to the power supply terminal and allows the DC power output from any one of the plurality of first power conversion devices 110 to flow therethrough.

[0518] The second output terminal may be connected to the bus line 1 to output the DC power to the bus line 1 .

[0519] Preferably, the second output end may be an output end of the third conversion device 110 # 3 corresponding to the third supply source 10 # 3 .

[0520] Accordingly, the second output terminal may be an output terminal of the third conversion device 110#3 that receives power from the bypass power source P serving as the third supply source 10#3.

[0521] That is, the output of the DC power supply of the third conversion device 110#3 can be divided into two: the power supply end and the second output end. The power supply end can be connected to the power supply ends of the first conversion device 110#1 and the second conversion device 110#2, and the second output end can be separated from the power supply end to constitute an independent output.

[0522] As described above, in the plurality of first power conversion devices 110 , the power supply terminal outputting the DC power and the second output terminal may be connected to the bus line 1 .

[0523] That is, the power supply end can be connected to the bus line 1 and the input end of the second power conversion device 120, so as to output the DC power to the bus line 1 and the second power conversion device 120 respectively, and the second output end can be connected to the bus line 1, so as to output the DC power to the bus line 1.

[0524] The DC power converted by the plurality of first power conversion devices 110 and output from the power supply terminal may be transmitted to each of more than one second power conversion device 120 .

[0525] The plurality of first power conversion devices 110 may be controlled by the control unit 140 .

[0526] The one or more second power conversion devices 120 may convert the DC power received from the plurality of first power conversion devices 110 into the driving power of AC power.

[0527] Corresponding to each of the loads 20 , the at least one second power conversion device 120 may include three second power conversion devices 120 # 1 to # 3 .

[0528] Each of the one or more second power conversion devices 120 may be connected to each of the loads 20 to supply the driving power to the connected loads.

[0529] Each of the one or more second power conversion devices 120 may include a switching unit for switching the connection at the front end.

[0530] The switching unit may be provided at an input terminal of each of the at least one second power conversion device 120 to limit switching of power input to the at least one second power conversion device 120 .

[0531] Here, the switching unit provided at the input end may be a circuit breaker that senses overcurrent and cuts off a circuit.

[0532] The driving power converted and output by one or more of the second power conversion devices 120 may be transmitted to each of the loads 20 .

[0533] Here, the load 20 may include an electric motor M load.

[0534] The one or more second power conversion devices 120 may be controlled by the control unit 140 .

[0535] The first circuit breaker 130a and the second circuit breaker 130b may be DC circuit breakers that cut off a DC power source.

[0536] The first circuit breaker 130a of the first circuit breaker 130a and the second circuit breaker 130b may be provided between the power supply terminal connected to the output terminal of each of the plurality of first power conversion devices 110 and the bus line 1 connected to the power supply terminal.

[0537] That is, the first circuit breaker 130 a may be disposed between the power supply terminal of the power supply device 100 and the bus line 1 , thereby limiting the connection between the power supply device 100 and the bus line 1 .

[0538] Accordingly, the power supply device 100 can be connected to the bus line 1 through the power supply end, and the connection with the bus line 1 can be limited by opening and closing the first circuit breaker 130a.

[0539] The second circuit breaker 130b of the first circuit breaker 130a and the second circuit breaker 130b may be provided between the second output terminal, which is an output terminal of any one of the plurality of first power conversion devices 110 , and the bus line 1 connected to the second output terminal.

[0540] That is, the second circuit breaker 130 b may be disposed between the second output terminal of the power supply device 100 and the bus line 1 , thereby limiting the connection between the power supply device 100 and the bus line 1 .

[0541] Accordingly, the power supply device 100 can be connected to the bus line 1 through the second output terminal, and the connection with the bus line 1 can be limited by opening and closing the second circuit breaker 130 b.

[0542] The bus line 1 may be a DC bus line through which a DC power source flows.

[0543] The bus line 1 may refer to a DC dedicated circuit that is commonly connected to a plurality of power supply sources and transmits power.

[0544] The bus line 1 may be connected to a plurality of DC power supply sources to transmit DC power supplied from the plurality of DC power supply sources.

[0545] For example, it can be connected to other power supply devices other than the power supply device 100, so that DC power can be transmitted between the power supply device 100 and the other power supply devices.

[0546] The bus line 1 may have a rated value ranging from the magnitude of the DC power supplied from at least one conversion device 110 to the magnitude of the DC power supplied from two conversion devices 110 .

[0547] That is, the rated value of the bus line 1 may be a rated value capable of enabling transmission of the DC power supplied from at least two conversion devices 110 .

[0548] The bus line 1 may have a rating of a size capable of enabling transmission of DC power between all power boards connected to the bus line 1 .

[0549] In the bus line 1 , the DC power may flow according to the opening and closing of the first circuit breaker 130 a and the second circuit breaker 130 b .

[0550] The first circuit breaker 130 a and the second circuit breaker 130 b , which are provided between the first output terminal and the second output terminal and the bus line 1 to limit the connection of the first output terminal and the second output terminal to the bus line 1 , can limit the connection of the bus line 1 .

[0551] That is, the first circuit breaker 130a and the second circuit breaker 130b can be opened in normal times to separate the first output end and the second output end from the bus line 1, and can be closed in operation to connect the first output end and the second output end to the bus line 1.

[0552] The first circuit breaker 130 a and the second circuit breaker 130 b may be controlled by the control unit 140 .

[0553] The control unit 140 may be a central control device of the power supply device 100 .

[0554] The control unit 140 may include a plurality of control units for controlling the power supply device 100 .

[0555] In addition, the control unit 140 may further include a plurality of electronic devices for executing the functions of the power supply device 100 .

[0556] For example, it may include a storage unit storing software / applications / programs for executing and controlling the functions of the power supply device 100, a dedicated control unit including the storage unit, a communication unit, a display unit, and one or more of an input unit.

[0557] The control unit 140 may control the plurality of first power conversion devices 110 , at least one second power conversion device 120 , and the first circuit breaker 130 a and the second circuit breaker 130 b .

[0558] The control unit 140 may include a programmable logic controller (PLC) for controlling the plurality of first power conversion devices 110 , at least one second power conversion device 120 , and the first circuit breaker 130 a and the second circuit breaker 130 b .

[0559] The control unit 140 can monitor the states of the plurality of first power conversion devices 110, the one or more second power conversion devices 120, and the first circuit breakers 130a and the second circuit breakers 130b, and control the operations of the plurality of first power conversion devices 110, the one or more second power conversion devices 120, and the first circuit breakers 130a and the second circuit breakers 130b based on the monitoring results.

[0560] In addition, the control unit 140 can control the operations of the plurality of first power conversion devices 110 , one or more second power conversion devices 120 , and the first and second circuit breakers 130 a and 130 b based on the states of the plurality of power supply sources 10 and the loads 20 .

[0561] The control unit 140 may control the conversion and supply of the DC power by controlling the operation of each of the plurality of first power conversion devices 110 .

[0562] For example, by controlling the operations of the control target conversion devices in the plurality of first power conversion devices 110 , control can be performed so that the DC power is converted by the control target conversion devices and supplied to one or more second power conversion devices 120 .

[0563] In addition, the control unit 140 may control the opening and closing of each of the opening and closing units included in the plurality of first power conversion devices 110 .

[0564] The control unit 140 may control the conversion and supply of the driving power by controlling the operation of each of the at least one second power conversion device 120 .

[0565] For example, by controlling the operation of one or more inverters to be controlled in the second power conversion device 120 , control can be performed so that the drive power is converted by the inverter to be controlled and supplied to the load 20 .

[0566] In addition, the control unit 140 may control the opening and closing of each of the opening and closing units included in one or more of the second power conversion devices 120 .

[0567] The control part 140 may control the reception and supply of the DC power by controlling the operations of the first circuit breaker 130a and the second circuit breaker 130b.

[0568] For example, control may be performed such that the first circuit breaker 130 a is closed to receive the DC power from the bus line 1 , or the second circuit breaker 130 b is closed to supply the DC power to the bus line 1 .

[0569] In this case, the control unit 140 may control the first circuit breaker 130a and the second circuit breaker 130b in an inter-lock manner.

[0570] For example, when the first circuit breaker 130a is closed to receive the DC power from the bus line 1, the second circuit breaker 130b can be opened, and when the second circuit breaker 130a is closed to supply the DC power to the bus line 1, the first circuit breaker 130a can be opened.

[0571] In addition, the control unit 140 can communicate with any one or more of the external communication devices and control units to control the operation of multiple first power conversion devices 110, one or more second power conversion devices 120, and the first circuit breakers 130a and the second circuit breakers 130b according to the communication execution results.

[0572] For example, a control instruction for controlling the actions of a plurality of the first power conversion devices 110, one or more of the second power conversion devices 120, and one or more of the first circuit breakers 130a and the second circuit breakers 130b can be received from the control unit, and the actions of the plurality of the first power conversion devices 110, one or more of the second power conversion devices 120, and one or more of the first circuit breakers 130a and the second circuit breakers 130b can be controlled according to the control instruction.

[0573] The control unit 140 may control to receive power from any one of the plurality of power supply sources 10 and convert the power into the DC power.

[0574] That is, the control unit 140 may perform control to selectively receive power from any one of the plurality of power supply sources 10 .

[0575] The control unit 140 may control to receive power from any one of the plurality of power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0576] The supply standard may be a standard regarding power supply priorities of the plurality of power supply sources 10 .

[0577] For example, the order may be set to be the first AC power source 10#1, the second AC power source 10#3, and the battery 10#3.

[0578] When the supply standard is as described above, the control unit 140 may control to sequentially receive power from the first AC power source 10 # 1 , the second AC power source 10 # 3 , and the battery 10 # 3 .

[0579] When receiving power from the first AC power source 10 # 1 , the control unit 140 may control the operation of the first conversion device 110 # 1 connected to the first AC power source 10 # 1 .

[0580] In this case, the control unit 140 can close the opening and closing unit of the first conversion device 110#1 and open the opening and closing units of the second conversion device 110#2 and the third conversion device 110#3, thereby connecting the first conversion device 110#1 and disconnecting the second conversion device 110#2 and the third conversion device 110#3.

[0581] When receiving power from the second AC power source 10 # 3 , the control unit 140 may control the operation of the third conversion device 110 # 3 connected to the second AC power source 10 # 3 .

[0582] In this case, the control unit 140 can close the opening and closing unit of the third conversion device 110#3 and open the opening and closing units of the first conversion device 110#1 and the second conversion device 110#2, so that only the third conversion device 110#3 is connected and the first conversion device 110#1 and the second conversion device 110#2 are disconnected.

[0583] When receiving power from the battery 10 # 2 , the control unit 140 may control the operation of the second conversion device 110 # 2 connected to the battery 10 # 2 .

[0584] In this case, the control unit 140 can close the opening and closing unit of the second conversion device 110#2 and open the opening and closing units of the first conversion device 110#1 and the third conversion device 110#3, so that only the second conversion device 110#2 is connected and the first conversion device 110#1 and the third conversion device 110#3 are disconnected.

[0585] The control unit 140 may select any one of the plurality of first power conversion devices 110 according to the status of the plurality of power supply sources 10 , and control the selected conversion device to transmit the DC power to each of the one or more second power conversion devices 120 .

[0586] That is, the control unit 140 may control to convert the DC power through one conversion device selected from the plurality of first power conversion devices 110 and transmit the DC power to one or more second power conversion devices 120 .

[0587] For example, when an abnormality occurs in the first AC power source 10#1 and the second AC power source 10#3 in the plurality of power supply sources 10, control can be performed to select the second conversion device 110#2 connected to the battery 10#2, so that the second conversion device 110#2 receives power from the battery 10#2, converts the power into the DC power, and transmits the DC power to each of the one or more second power conversion devices 120.

[0588] When an abnormality occurs in one or more of the conversion device 110 that is transmitting the DC power to one or more of the second power conversion devices 120 and the power supply source 10 corresponding to the conversion device 110, the control unit 140 can control the DC power to be transmitted to one or more of the second power conversion devices 120 by other conversion devices other than the conversion device.

[0589] When an abnormality occurs in one or more of the conversion device that is transmitting the DC power to one or more of the second power conversion devices 120 and the power supply source corresponding to the conversion device, the control unit 140 can switch the power supply source that is supplying power and the conversion device so that the DC power is transmitted to one or more of the second power conversion devices 120 by other conversion devices other than the conversion device.

[0590] For example, during the period of receiving power from the first AC power supply 10#1 and converting it into the DC power supply through the first conversion device 110#1, when the first conversion device 110#1 fails, or when the first AC power supply 10#1 stops operating (shutdown), the first AC power supply 10#1 that is supplying power can be switched to the second AC power supply 10#3, and the first conversion device 110#1 can be switched to the third conversion device 110#3 to receive power from the second AC power supply 10#3, convert it into the DC power supply by the third conversion device 110#3, and transmit the DC power supply to the second power conversion device 120.

[0591] The control unit 140 may control the first conversion device 110 # 1 that receives power from the first AC power source 10 # 1 to operate in normal times to transmit the DC power to one or more second power conversion devices 120 .

[0592] That is, among the plurality of power supply sources 10 , the first AC power source 10 # 1 may be given the highest priority to supply power to the power supply device 100 .

[0593] When an abnormality occurs in any one or more of the first AC power supply 10#1 and the first conversion device 110#1, the control unit 140 can control to stop the operation of the first conversion device 110#1, and to operate any one of the second conversion device 110#2 that receives power from the battery 10#3 and the third conversion device 110#3 that receives power from the second AC power supply 10#3 to transmit the DC power to one or more of the second power conversion devices 120.

[0594] That is, when an abnormality occurs in the first AC power source 10#1 that supplies power to the power supply device 100 with the highest priority, the power supply source can be switched to the battery 10#2 or the second AC power source 10#3 to receive power.

[0595] For example, when the rated value of the first AC power source 10#1 that is supplying power to the first conversion device 110#1 is significantly reduced, the operation of the first conversion device 110#1 can be stopped, and the second conversion device 110#2 or the second AC power source 10#3 can be operated to receive power from the battery 10#2 or the second AC power source 10#3, and the second conversion device 110#2 or the second AC power source 10#3 converts the received power into the DC power supply to transmit it to one or more second power conversion devices 120.

[0596] When an abnormality occurs in any one or more of the first AC power supply 10#1 and the first conversion device 110#1, the control unit 140 can control to select one of the second conversion device 110#2 and the third conversion device 110#3 according to their respective states, so as to activate the selected conversion device to transmit the DC power to one or more of the second power conversion devices 120.

[0597] When the second circuit breaker 130 b is in a closed state, the control unit 140 may control the conversion devices other than the conversion device corresponding to the second output terminal to operate, so as to transmit the DC power to one or more second power conversion devices 120 .

[0598] For example, when an abnormality occurs in any one or more of the first AC power supply 10#1 and the first conversion device 110#1, the second circuit breaker 130b is in a closed state, and the second conversion device 110#2 except the third conversion device 110#3 corresponding to the second output end can be operated to transmit the DC power to one or more second power conversion devices 120.

[0599] As described above, the control unit 140 that controls the plurality of first power conversion devices 110, the one or more second power conversion devices 120, and the first circuit breakers 130a and the second circuit breakers 130b controls the opening and closing of the first circuit breakers 130a and the second circuit breakers 130b respectively according to the state of the power supply device 100, thereby controlling the reception / supply of the DC power through the bus line 1.

[0600] For example, when the size of the driving power supply is smaller than the size required by the load 20, or when the DC power supply is insufficient, control can be performed to close the first circuit breaker 130a and open the second circuit breaker 130b to receive the DC power supply from the bus line 1.

[0601] Alternatively, when the size of the driving power source is larger than the size required by the load 20 or when the DC power source is sufficient, control may be performed to close the first circuit breaker 130a or the second circuit breaker 130b to supply the DC power source to the bus line 1.

[0602] In the opposite case, when a plurality of the first power conversion devices 110 or more than one of the second power conversion devices 120 fails and causes a fault current to flow through the output end, or a plurality of the power supply sources 10 or the loads 20 malfunction and causes the fault current to flow through the output end, the first circuit breaker 130a and the second circuit breaker 130b can be opened to prevent the fault current from being supplied to the bus line 1.

[0603] The control section 140 that controls the reception / supply of the DC power as described above may be configured as follows: Figures 19a to 19c The processes are shown respectively to control the reception / supply of the DC power.

[0604] The control unit 140 can open the first circuit breaker 130a at normal times, and can close the first circuit breaker 130a according to the status of any one or more of the plurality of power supply sources 10, the plurality of first power conversion devices 110, the DC power supply, and the driving power supply.

[0605] like Fig.19aAs shown, the process of performing closed-circuit control on the first circuit breaker 130a as described above can be performed in the order of action control (P10), abnormality occurrence judgment (P21), first circuit breaker closing (P31) and DC power reception (P41).

[0606] In the action control of the power supply device 100 (P10), the control unit 140 can close the first circuit breaker 130b (P21 and P31) according to the status of any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply.

[0607] When an abnormality occurs in any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply (P21), the control unit 140 can close the first circuit breaker 130a (P31) to receive the DC power supply from the bus line 1 through the power supply end and transmit the DC power supply to one or more of the second power conversion devices 120.

[0608] The control unit 140 can detect the respective states of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply, and compare the detection results with the preset abnormal standards. When the comparison results show that any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply corresponds to the abnormal standards, it can be determined that an abnormality has occurred in any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply (P21).

[0609] That is, when any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply corresponds to the abnormality standard, the control unit 140 can determine that any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply has an abnormality (P21), and control the first circuit breaker 130a to close (P31) to receive the DC power (P41).

[0610] As described above, when any one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, the DC power supply and the driving power supply is abnormal (P21) and is unable to supply the DC power to one or more of the second power conversion devices 120, the control unit 140 can control to close the first circuit breaker 130a (P31) to receive the DC power (P41) from the bus line 1 through the power supply end and output it to one or more of the second power conversion devices 120.

[0611] Here, the abnormality standard may be a standard regarding an abnormal state of each of the plurality of power supply sources 10 , the plurality of first power conversion devices 110 , the DC power source, and the driving power source.

[0612] In addition, the control unit 140 can open the second circuit breaker 130b at normal times, and can close the second circuit breaker 130b according to the status of the conversion device corresponding to the second output end in the plurality of first power conversion devices 110 and other power supply devices connected to the bus line 1.

[0613] like Fig.19b As shown, the process of performing closed-circuit control on the second circuit breaker 130b as described above can be performed in the order of action control (P10), abnormality occurrence information reception (P22), second circuit breaker closing (P32) and DC power supply (P42).

[0614] In the operation control of the power supply device 100 (P10), the control unit 140 can close the second circuit breaker 130b according to the status of the conversion device corresponding to the second output terminal and the other power supply devices connected to the bus line 1 (P22 and P32).

[0615] When the conversion device corresponding to the second output terminal is normal and the other power supply device has an abnormality (P22), the control unit 140 can close the second circuit breaker 130b (P32) to supply the DC power from the second output terminal to the bus line 1 and transmit the DC power to the other power supply device.

[0616] When receiving the abnormality occurrence information from the other power supply device, the control unit 140 may determine that an abnormality has occurred in the other power supply device (P22).

[0617] That is, when receiving abnormality information from the other power supply device, the control unit 140 can determine that an abnormality has occurred in the other power supply device (P22), and can control the second circuit breaker 130b to close (P32) to supply the DC power (P42).

[0618] As described above, when the conversion device corresponding to the second output terminal is normal, and the other power supply device has an abnormality (P22), making the other power supply device unable to supply the DC power to more than one second power conversion device, the control unit 140 can control to close the second circuit breaker 130b (P32) to supply the DC power from the second output terminal to the bus line 1 (P42), and transmit the DC power to the other power supply device.

[0619] Here, the other power supply device may be a power supply device other than the power supply device 100 connected to the bus line 1 .

[0620] In addition, the control unit 140 may open the first circuit breaker 130a and the second circuit breaker 130b at normal times, and communicate with an external control unit, and may close the first circuit breaker 130a or the second circuit breaker 130b according to the communication result with the control unit.

[0621] As described above, the process of performing closed-circuit control on the first circuit breaker 130a or the second circuit breaker 130b may be as follows: Fig.19c The shown sequence of action control (P10), reception or supply request information reception (P23 or P24), closing of the first circuit breaker 130a or the second circuit breaker 130b (P31 or P32), and DC power reception or supply (P41 or P42) is performed.

[0622] In the operation control of the power supply device 100 (P10), the control unit 140 may close the first circuit breaker 130a or the second circuit breaker 130b according to the communication result with the control unit (P23 or P24, P31 or P32).

[0623] When receiving reception request information (P23) regarding the reception of the DC power supply from the control unit, the control unit 140 can control to close the first circuit breaker 130a (P31) to receive the DC power supply (P41) from the bus line 1 through the power supply end and transmit the DC power supply to one or more of the second power conversion devices 120.

[0624] When supply request information (P24) regarding the supply of the DC power supply is received from the control unit, the control unit 140 can control the second circuit breaker 130b to be closed (P32) to supply the DC power supply from the second output terminal to the bus line 1 (P42) and transmit the DC power supply to the other power supply devices.

[0625] That is, when the receiving request information (P23) is received from the control unit, the control unit 140 can control the first circuit breaker 130a to be closed (P31) to receive the DC power supply (P41), and when the supply request information (P24) is received from the control unit, the control unit 140 can control the second circuit breaker 130b to be closed (P32) to supply the DC power supply (P42).

[0626] As described above, when the receiving request information (P23) is received from the control unit, the control unit 140 can control the first circuit breaker 130a to be closed (P31) to receive the DC power (P41) from the bus line 1 through the power supply end, and transmit it to one or more second power conversion devices 120. When the supply request information (P24) is received from the control unit, the control unit 140 can control the second circuit breaker 130b to be closed (P32) to supply the DC power (P42) to the bus line 1 from the second output end, and transmit the DC power to the other power supply devices connected to the bus line 1.

[0627] Here, the reception request information may be information about a control instruction for controlling the control unit 140 to receive the DC power from the bus line 1 , and the supply request information may be information about a control instruction for controlling the control unit 140 to supply the DC power to the bus line 1 .

[0628] As described above, in the power supply device 100, the power end can receive the DC power through the bus line 1, the first circuit breaker 130a can limit the power supply device 100 from receiving the DC power from the other power supply devices by opening and closing the connection between the power end receiving the DC power and the bus line 1, the second output end can supply the DC power through the bus line 1, and the second circuit breaker 130b can limit the supply of the DC power from the power supply device 100 to the other power supply devices by opening and closing the connection between the second output end supplying the DC power and the bus line 1.

[0629] As described above, the power supply device 100 can be used in Figure 1a The power supply system shown includes a plurality of and is connected to the bus line 1 to receive / supply the DC power.

[0630] Hereinafter, the control method of the power supply system of the present invention will be described, and the parts overlapping with the above contents will be omitted as much as possible.

[0631] The embodiments of the control method of the power supply system described below may be implemented independently, or may be implemented in combination with the embodiments of the power supply device 100 described above.

[0632] The power supply system may be implemented in a combination or in a separate form of the above-mentioned embodiments and the embodiments described below.

[0633] The power supply system may be a power supply system including a plurality of power supply devices.

[0634] The power supply system may be a system including a plurality of packaged power devices to supply power.

[0635] Here, the power supply device may be a power board encapsulating a plurality of power control devices.

[0636] The power supply system may include a plurality of the power supply devices 100 described above.

[0637] That is, the power supply device 100 may be applied to and implemented in the power supply system, and the power supply system may include a plurality of the power supply devices 100 .

[0638] like Figure 1aAs shown, the power supply system 1000 includes: a plurality of power boards 100, 200, 300, 400, which convert the power received from each of the plurality of power supply sources 10 into a DC power, and convert the DC power into a driving power for driving a load 20, so as to supply the driving power to the load 20; a bus line 1, connected to a power supply terminal for outputting the DC power in each of the plurality of power boards 100, 200, 300, 400 and a second output terminal separated from the power supply terminal and outputting the DC power connected so that the DC power converted in the plurality of power boards 100, 200, 300, 400 is turned on; a plurality of first circuit breakers 130a, 230a, 330a, 430a are arranged between each of the power terminals and the bus line 1 to limit the connection between the power terminals and the bus line 1; and a plurality of second circuit breakers 130b, 230b, 330b, 430b are arranged between each of the second output terminals and the bus line 1 to limit the connection between the second output terminals and the bus line 1.

[0639] Here, the power supply system 1000 may further include a control device 600 for monitoring and controlling the plurality of power boards 100 , 200 , 300 , 400 .

[0640] In the power supply system 1000, the control device 600 determines an abnormal power board among the plurality of power boards 100, 200, 300, 400, closes the first circuit breaker 130a, 230a, 330a, 430a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply target power board that supplies the DC power to the abnormal power board, and controls to supply the DC power from the supply target power board to the abnormal power board through the bus line.

[0641] Here, each of the plurality of power boards 100, 200, 300, 400 may be as follows: Figure 2a and Fig.21 The power supply device 100 is shown.

[0642] like Figure 2a and Fig.21 As shown, each of the plurality of power boards 100, 200, 300, 400 may include a plurality of first power conversion devices 110, 210, 310, 410, one or more second power conversion devices 120, 220, 320, 420, the first and second circuit breakers 130, 230, 330, 430 and a control unit 140, 240, 340, 440.

[0643] Each of the plurality of power boards 100, 200, 300, 400 may include: a plurality of first power conversion devices 110, which convert the power received from each of the plurality of power supply sources 10 into a DC power supply; one or more second power conversion devices 120, which convert the DC power supply into a driving power supply for driving the load 20, so as to supply the driving power supply to the load 20; a first circuit breaker 130a, 230a, 330a, 430a, which is arranged between the power supply terminal commonly connected to the outputs of the plurality of first power conversion devices 110 and the bus line 1 connected to the power supply terminal, so as to limit the power supply terminal from being connected to the bus line 1. bus line 1; the second circuit breaker 130b, 230b, 330b, 430b is arranged between the second output terminal which is the output of any one of the plurality of first power conversion devices 110 and the bus line 1 connected to the second output terminal to limit the connection between the second output terminal and the bus line 1; and the control unit 140, 240, 340, 440 controls the operation of each of the plurality of first power conversion devices 110 and one or more second power conversion devices 120 and the opening and closing of each of the first circuit breaker 130a and the second circuit breaker 130b according to the state of the DC power supply or the driving power supply.

[0644] In each of the plurality of power boards 100, 200, 300, 400, when receiving the DC power from the bus line 1, each of the control units 140, 240, 340, 440 closes the first circuit breaker 130a, 230a, 330a, 430a, and when supplying the DC power to the bus line 1, each of the control units 140, 240, 340, 440 closes the second circuit breaker 130b, 230b, 330b, 430b.

[0645] In addition, each of the plurality of power boards 100, 200, 300, 400 may also be configured as follows: Figure 2a and Fig.21 The power supply device 100 shown has different configurations.

[0646] The power supply system 1000 may include a plurality of power boards 100 , 200 , 300 , 400 , and the plurality of power boards 100 , 200 , 300 , 400 may be connected to a bus line 1 .

[0647] The plurality of power boards 100, 200, 300, 400 may be composed of a plurality of power boards, and may be configured as follows: Figure 1a The shown consists of four or more.

[0648] Preferably, the plurality of power boards 100 , 200 , 300 , 400 may consist of five or more power boards.

[0649] Each of the plurality of power boards 100 , 200 , 300 , 400 may receive power from each of the plurality of power supply sources 10 and convert it into the DC power, and then convert the DC power into the driving power to supply the driving power to each of the loads 20 .

[0650] Each of the plurality of power strips 100 , 200 , 300 , 400 may communicate with the control device 600 , and may perform an action according to a result of the communication with the control device 600 .

[0651] For example, a control instruction may be received from the control device 600 and an action may be performed according to the control instruction, or status information may be transmitted to the control device 600 .

[0652] like Figure 1a As shown, the plurality of power supply sources 10 may include: a first alternating current power source 10#1 and a second alternating current power source 10#3 for supplying AC power; and a battery 10#2 for storing DC power.

[0653] Here, the first AC power source 10#1 may be a main system power source G for supplying AC power, the second AC power source 10#3 may be a bypass system power source P for supplying AC power, and the battery 10#2 may be a battery power source B for supplying DC power.

[0654] That is, Figure 1a As shown, the plurality of power supply sources 10 may include a system power G, a bypass power P and a battery power B.

[0655] Thus, each of the plurality of power boards 100 , 200 , 300 , 400 can receive power from the system power G, the bypass power P, and the battery power B, respectively.

[0656] The battery power supply B stores the DC power supply. When the power supply of the first AC power supply 10#1 and the second AC power supply 10#3 is interrupted, the power stored in the battery power supply B can be supplied to the plurality of power boards 100, 200, 300, 400 while the power supply is switched and restored.

[0657] After the power supply is interrupted, the battery power source B may uninterruptedly supply the stored power to the plurality of power strips 100, 200, 300, 400 until the power supply is switched and restored.

[0658] In addition, the plurality of power supply sources 10 may further include an emergency power supply A. When an abnormality occurs in the first AC power supply G, the second AC power supply P, and the battery power supply B, the emergency power supply A supplies emergency generated power to the load 20 .

[0659] The emergency power supply A may be a power supply that maintains the driving of the load 20 within a predetermined time by supplying emergency power to each of the loads 20 when an abnormality occurs in the first AC power supply G, the second AC power supply P, and the battery power supply B that supply power to each of the plurality of power strips 100, 200, 300, 400 and fail to supply power.

[0660] For example, the emergency power supply A may be a power supply including an emergency generator.

[0661] Preferably, if Figure 1a As shown, each of the multiple power strips 100, 200, 300, 400 can receive power from three power supply sources 10, namely, the system power supply G, the bypass power supply P and the battery power supply B, and can receive power from the emergency power supply A only when the system power supply G, the bypass power supply P and the battery power supply B cannot supply power.

[0662] Here, each of the plurality of power supply sources 10 that supplies power to each of the plurality of power strips 100, 200, 300, 400 may supply power to each of the plurality of power strips 100, 200, 300, 400 in one system, or may supply power to each of the plurality of power strips 100, 200, 300, 400 from each individual distribution board through an individual distribution board.

[0663] Each of the plurality of power boards 100, 200, 300, 400 can receive power from each of the plurality of power supply sources 10, convert the received power into the DC power through the plurality of first power conversion devices 110, 210, 310, 410, and convert the DC power into the driving power through one or more of the second power conversion devices 120, 220, 320, 420 to supply the load 20.

[0664] Each of the plurality of power boards 100, 200, 300, 400 may include a plurality of first power conversion devices 110, 210, 310, 410 connected to each of the plurality of power supply sources 10, so that the power received from each of the plurality of power supply sources 10 can be converted into the DC power by the plurality of first power conversion devices 110.

[0665] Preferably, each of the plurality of power strips 100 , 200 , 300 , 400 may include three conversion devices connected to each of the plurality of power supply sources 10 .

[0666] The power supply end and the second output end of each of the plurality of first power conversion devices 110, 210, 310, 410 included in each of the plurality of power boards 100, 200, 300, 400 are separated so that the DC power can be output from the power supply end and the second output end respectively.

[0667] The power supply end may be connected to form a circuit by the output end of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 .

[0668] Thus, the power supply terminal may be a circuit commonly connected to the output of each of the plurality of first power conversion devices 110 , 210 , 310 , 410 , so that the DC power output from the plurality of first power conversion devices 110 , 210 , 310 , 410 flows through.

[0669] The DC power output from any one of the plurality of first power conversion devices 110 , 210 , 310 , 410 may flow through the power supply terminal.

[0670] The power supply terminal can be connected to the input terminal of the bus line 1 and each of the one or more second power conversion devices 120, 220, 320, 420 to transmit the DC power to the bus line 1 or the one or more second power conversion devices 120, 220, 320, 420.

[0671] The second output terminal may be an output terminal of any one of the plurality of first power conversion devices 110 , 210 , 310 , 410 separated from the power supply terminal.

[0672] Thus, the second output terminal may be a circuit that is not connected to the power supply terminal and allows the DC power output from any one of the plurality of first power conversion devices 110 , 210 , 310 , 410 to flow therethrough.

[0673] The second output terminal may be connected to the bus line 1 to transmit the DC power to the bus line 1 .

[0674] Preferably, the second output end may be an output end of the third conversion device 110 # 3 , 210 # 3 , 310 # 3 , 410 # 3 corresponding to the third supply source 10 # 3 .

[0675] In addition, the second output end may also be the output end of the battery corresponding to the second supply source 10#2.

[0676] Accordingly, the second output terminal may be an output terminal of the third conversion device 110#3, 210#3, 310#3, 410#3 that receives power from the bypass power supply P serving as the third supply source 10#3.

[0677] That is, the output of the DC power supply of each of the third conversion devices 110#3, 210#3, 310#3, 410#3 included in each of the multiple power boards 100, 200, 300, 400 can be divided into two: the power supply end and the second output end. The power supply end can be connected to the outputs of the first and second conversion devices 110#1 and 110#2, 210#1 and 210#2, 310#1 and 310#2, 410#1 and 410#2, and the second output end can be separated from the power supply end to constitute an independent output.

[0678] As described above, in the plurality of first power conversion devices 110 , 210 , 310 , 410 , the power supply terminal outputting the DC power and the second output terminal may be connected to the bus line 1 .

[0679] That is, the power supply end can be connected to the input end of the bus line 1 and each of the one or more second power conversion devices 120, 220, 320, 420, so as to transmit the DC power to the bus line 1 and each of the one or more second power conversion devices 120, 220, 320, 420, and the second output end can be connected to the bus line 1, so as to transmit the DC power to the bus line 1.

[0680] The DC power converted by each of the plurality of first power conversion devices 110, 210, 310, 410 can be transmitted to each of one or more second power conversion devices 120, 220, 320, 420 through the power supply end of each of the plurality of first power conversion devices 110, 210, 310, 410.

[0681] Preferably, if Figure 1a As shown, each of the plurality of power boards 100 , 200 , 300 , 400 may include three second power conversion devices 120 , 220 , 320 , 420 , so as to supply the driving power to three loads 20 respectively through the three second power conversion devices 120 , 220 , 320 , 420 .

[0682] Here, the load 20 may be a motor M load.

[0683] Preferably, if Figure 1a As shown, in each of the plurality of power boards 100, 200, 300, 400, the first circuit breaker 130a, 230a, 330a, 430a can be set on each circuit connected by the power supply end of each of the plurality of first power conversion devices 110, 210, 310, 410 and the bus line 1.

[0684] Thus, in each of the plurality of power boards 100 , 200 , 300 , 400 , each of the power terminals can be commonly connected to the bus line 1 .

[0685] In addition, preferably, Figure 1a As shown, in each of the plurality of power boards 100, 200, 300, 400, the second circuit breaker 130b, 230b, 330b, 430b can be set on each circuit connected by the second output terminal of each of the plurality of first power conversion devices 110, 210, 310, 410 and the bus line 1.

[0686] Therefore, in each of the plurality of power boards 100 , 200 , 300 , 400 , each of the second output terminals can be connected to the bus line 1 in common.

[0687] Each of the first and second circuit breakers 130 , 230 , 330 , 430 is a DC circuit breaker that cuts off a DC power source, and may be provided on a circuit between the first and second output terminals and the bus line 1 .

[0688] Each of the first and second circuit breakers 130 , 230 , 330 , 430 may be opened at normal times and closed when in operation, thereby limiting the connection between the first output terminal and the second output terminal and the bus line 1 .

[0689] Thus, each of the plurality of power boards 100 , 200 , 300 , 400 can be connected to the bus line 1 by opening and closing each of the plurality of circuit breakers 130 , 230 , 330 , 430 .

[0690] The first circuit breakers 130a, 230a, 330a, 430a of the first and second circuit breakers 130, 230, 330, 430 may be disposed between the power supply terminal to which the output of each of the plurality of first power conversion devices 110, 210, 310, 410 is connected and the bus line 1 connected to the power supply terminal.

[0691] That is, the first circuit breakers 130a, 230a, 330a, 430a may be disposed between the power end of the power supply device 100 and the bus line 1, thereby limiting the connection between the plurality of power boards 100, 200, 300, 400 and the bus line 1.

[0692] Accordingly, the plurality of power boards 100, 200, 300, 400 can be connected to the bus line 1 via the power supply terminal, and the connection to the bus line 1 can be limited by opening and closing the first circuit breakers 130a, 230a, 330a, 430a.

[0693] The second circuit breaker 130b, 230b, 330b, 430b of the first and second circuit breakers 130, 230, 330, 430 may be disposed between the second output terminal, which is the output terminal of any one of the plurality of first power conversion devices 110, 210, 310, 410, and the bus line 1 connected to the second output terminal.

[0694] That is, the second circuit breakers 130b, 230b, 330b, 430b may be disposed between the second output terminals of the plurality of power boards 100, 200, 300, 400 and the bus line 1, thereby limiting the connection between the power supply device 100 and the bus line 1.

[0695] Accordingly, the plurality of power boards 100, 200, 300, 400 can be connected to the bus line 1 via the second output terminal, and the connection to the bus line 1 can be limited by opening and closing the second circuit breakers 130b, 230b, 330b, 430b.

[0696] The bus line 1 is a DC bus line through which a DC power source flows, and the DC power source transmitted through the first output terminal or the second output terminal of each of the plurality of power boards 100 , 200 , 300 , 400 may flow through the bus line 1 .

[0697] That is, in the bus line 1 , the DC power may flow according to the opening and closing of each of the first and second circuit breakers 130 , 230 , 330 , 430 .

[0698] Each of the plurality of power boards 100 , 200 , 300 , 400 can control and monitor operations of the plurality of first power conversion devices 110 , 210 , 310 , 410 and one or more second power conversion devices 120 , 220 , 320 , 420 included therein.

[0699] Each of the plurality of power boards 100, 200, 300, 400 can control the opening and closing of each of the plurality of circuit breakers 130, 230, 330, 430 based on the results of controlling and monitoring the actions of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein.

[0700] Each of the plurality of power boards 100, 200, 300, 400 can transmit the results of controlling and monitoring the actions of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein to the control device 600.

[0701] Each of the plurality of power boards 100, 200, 300, 400 can detect the status of the DC power supply and the driving power supply by controlling and monitoring the operation of the plurality of first power conversion devices 110, 210, 310, 410 and one or more second power conversion devices 120, 220, 320, 420 included therein.

[0702] Each of the plurality of power boards 100 , 200 , 300 , 400 may detect the states of the DC power source and the driving power source, and transmit the detection result to the control device 600 .

[0703] Each of the plurality of power strips 100 , 200 , 300 , 400 may receive power from any one of the plurality of power supply sources 10 and convert the power into the DC power.

[0704] That is, each of the plurality of power strips 100 , 200 , 300 , 400 may selectively receive power from any one of the plurality of power supply sources 10 .

[0705] Each of the plurality of power strips 100 , 200 , 300 , 400 may receive power from any one of the plurality of power supply sources 10 according to a preset supply standard and convert the power into the DC power.

[0706] The supply standard may be a standard regarding power supply priorities of the plurality of power supply sources 10 .

[0707] For example, the order may be set to be the first AC power source 10#1, the second AC power source 10#3, and the battery 10#3.

[0708] When the supply standard is as described above, each of the plurality of power strips 100, 200, 300, 400 can receive power from the first AC power source 10#1, the second AC power source 10#3, and the battery 10#3 in sequence.

[0709] When receiving power from the first AC power source 10#1, each of the plurality of power strips 100, 200, 300, 400 may control the operation of the first conversion device 110#1, 210#1, 310#1, 410#1 connected to the first AC power source 10#1.

[0710] In this case, each of the multiple power boards 100, 200, 300, 400 can close the opening and closing units of the first conversion devices 110#1, 210#1, 310#1, 410#1, and open the opening and closing units of the second conversion devices 110#2, 210#2, 310#2, 410#2 and the third conversion devices 110#3, 210#3, 310#3, 410#3, thereby connecting the first conversion devices 110#1, 210#1, 310#1, 410#1 and disconnecting the second conversion devices 110#2, 210#2, 310#2, 410#2 and the third conversion devices 110#3, 210#3, 310#3, 410#3.

[0711] When receiving power from the second AC power source 10#3, each of the plurality of power strips 100, 200, 300, 400 may control the operation of the third conversion device 110#3, 210#3, 310#3, 410#3 connected to the second AC power source 10#3.

[0712] In this case, each of the multiple power boards 100, 200, 300, 400 can close the opening and closing units of the third conversion device 110#3, 210#3, 310#3, 410#3, and open the opening and closing units of the first conversion device 110#1, 210#1, 310#1, 410#1 and the second conversion device 110#2, 210#2, 310#2, 410#2, so that only the third conversion device 110#3, 210#3, 310#3, 410#3 is connected, and the first conversion device 110#1, 210#1, 310#1, 410#1 and the second conversion device 110#2, 210#2, 310#2, 410#2 are disconnected.

[0713] When receiving power from the battery 10#2, each of the plurality of power boards 100, 200, 300, 400 may control the operation of the second conversion device 110#2, 210#2, 310#2, 410#2 connected to the battery 10#2.

[0714] In this case, each of the multiple power boards 100, 200, 300, 400 can close the opening and closing units of the second conversion devices 110#2, 210#2, 310#2, 410#2, and open the opening and closing units of the first conversion devices 110#1, 210#1, 310#1, 410#1 and the third conversion devices 110#3, 210#3, 310#3, 410#3, so that only the second conversion devices 110#2, 210#2, 310#2, 410#2 are connected, and the first conversion devices 110#1, 210#1, 310#1, 410#1 and the third conversion devices 110#3, 210#3, 310#3, 410#3 are disconnected.

[0715] Each of the plurality of power boards 100, 200, 300, 400 can select any one of the plurality of first power conversion devices 110, 210, 310, 410 according to the status of the plurality of power supply sources 10, so that the DC power is transmitted by the selected conversion device to each of one or more of the second power conversion devices 120, 220, 320, 420.

[0716] That is, each of the plurality of power boards 100 , 200 , 300 , 400 can convert the DC power through a conversion device selected from the plurality of first power conversion devices 110 , and transmit it to one or more second power conversion devices 120 , 220 , 320 , 420 .

[0717] In each of the plurality of power boards 100, 200, 300, 400, when an abnormality occurs in a conversion device that is transmitting the DC power to one or more of the second power conversion devices 120, 220, 320, 420 and any one or more of the power supply sources 10 corresponding to the conversion device, the DC power can be transmitted to one or more of the second power conversion devices 120, 220, 320, 420 by other conversion devices other than the conversion device.

[0718] In each of the plurality of power boards 100, 200, 300, 400, when an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to one or more of the second power conversion devices 120, 220, 320, 420 and the power supply source corresponding to the conversion device, the power supply source and the conversion device that are supplying power can be switched so that the DC power is transmitted to one or more of the second power conversion devices 120, 220, 320, 420 by other conversion devices other than the conversion device.

[0719] Each of the plurality of power boards 100, 200, 300, 400 can normally operate the first conversion device 110#1, 210#1, 310#1, 410#1 that receives power from the first AC power source 10#1 to transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420.

[0720] That is, among the plurality of power supply sources 10 , the first AC power source 10 # 1 may be given the highest priority to supply power to the plurality of power strips 100 , 200 , 300 , 400 .

[0721] When an abnormality occurs in any one of the first AC power supply 10#1 and the first conversion devices 110#1, 210#1, 310#1, 410#1, each of the multiple power boards 100, 200, 300, 400 can transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420 by stopping the operation of the first conversion device 110#1, 210#1, 310#1, 410#1 and actuating any one of the second conversion devices 110#2, 210#2, 310#2, 410#2 receiving power from the battery 10#3 and the third conversion devices 110#3, 210#3, 310#3, 410#3 receiving power from the second AC power supply 10#3.

[0722] That is, when an abnormality occurs in the first AC power source 10#1 that supplies power to the plurality of power strips 100, 200, 300, 400 with the highest priority, the power supply source can be switched to the battery 10#2 or the second AC power source 10#3 to receive power.

[0723] When an abnormality occurs in any one or more of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1, each of the multiple power boards 100, 200, 300, 400 can select one of the second conversion devices 110#2, 210#2, 310#2, 410#2 and the third conversion devices 110#3, 210#3, 310#3, 410#3 according to the status of each of the second conversion devices 110#2, 210#2, 310#2, 410#2 and the third conversion devices 110#3, 210#3, 310#3, 410#3, and activate the selected conversion device to transmit the DC power to one or more of the second power conversion devices 120, 220, 320, 420.

[0724] When the second circuit breaker 130b, 230b, 330b, 430b is in a closed state, each of the multiple power supply boards 100, 200, 300, 400 can activate the conversion device other than the conversion device corresponding to the second output terminal to supply the DC power to one or more of the second power conversion devices 120, 220, 320, 420.

[0725] The operation example of the power supply system 1000 including the plurality of power boards 100, 200, 300, 400 as described above can be as follows: Figures 3 to 6 shown.

[0726] like Figures 3 to 6 The operation example shown is an operation example in which the power supply system 1000 includes five power boards 100, 200, 300, 400, 500. The power supply system 1000 may also include a plurality of power boards 100, 200, 300, 400, 500 that are less than five or more than five.

[0727] like Figures 3 to 6 As shown, the preferred embodiment of the power supply system 1000 may include five power boards 100, 200, 300, 400, 500, which will be described below. Figures 3 to 6 The case where the plurality of power boards 100 , 200 , 300 , 400 , and 500 are five is described as an example.

[0728] Figure 3This is a situation where each of the plurality of power boards 100, 200, 300, 400, 500 receives power from the system power supply G in the plurality of power supply sources 10, in which case the power supply from the bypass power supply P and the battery power supply B is cut off, power can be received through the system power supply G, and the power is sequentially converted into the DC power supply and the drive power supply and supplied to each of the loads 20.

[0729] like Figure 3 The operation example shown is a case of normal operation in which the power is received from the system power supply G to operate. The normal operation of the power supply system 1000 can be performed in this manner.

[0730] Figure 4 This is a situation where each of the plurality of power boards 100, 200, 300, 400, 500 receives power from the bypass power supply P in the plurality of power supply sources 10. This situation may correspond to a situation where an abnormality occurs in the system power supply G. In this case, the power supply from the system power supply G and the battery power supply B is cut off, and power can be received through the bypass power supply P, and the power is sequentially converted into the DC power supply and the drive power supply and supplied to each of the loads 20.

[0731] like Figure 4 The operation example shown is a case of a special operation in which the power is received from the bypass power source P to operate, and the special operation of the power supply system 1000 can be performed in this manner.

[0732] Figure 5 This is a situation where each of the multiple power boards 100, 200, 300, 400, 500 receives power from the battery power supply B in the multiple power supply sources 10. This situation may correspond to a situation where an abnormality occurs in the system power supply G and the bypass power supply P. In this case, the power supply from the system power supply G and the bypass power supply P is cut off, and power can be received through the battery power supply B, and the power is sequentially converted into the DC power supply and the drive power supply and supplied to each of the loads 20.

[0733] like Figure 5 The operation example shown is a case of power-off operation in which the power is received from the battery power source B. The power-off operation of the power supply system 1000 can be performed in this manner.

[0734] Figure 6This is a situation where each of the multiple power boards 100, 200, 300, 400, 500 receives power from the emergency power supply A in the multiple power supply sources 10. This situation can correspond to the situation where an abnormality occurs in the system power supply G, the bypass power supply P, and the battery power supply B. In this case, the power supply from the system power supply G, the bypass power supply P, and the battery power supply B is cut off, and the emergency power supply A can directly supply the driving power to each of the loads 20.

[0735] like Figure 6 The operation example shown is a case of emergency operation in which the power is received from the emergency power supply A to operate. The emergency operation of the power supply system 1000 can be performed in this manner.

[0736] As described above, in the power supply system 1000, each of the plurality of power strips 100, 200, 300, 400, 500 can receive power from the same power supply source to operate, or each of the plurality of power strips 100, 200, 300, 400, 500 can also selectively receive power from any one of the plurality of power supply sources 10 to operate.

[0737] For example, the first power board 100 and the second power board 200 can receive power from the system power supply G to operate, the third power board 300 and the fourth power board 400 can receive power from the bypass power supply P to operate, and the fifth power board 500 can receive power from the battery power supply B to operate.

[0738] In addition, each of the plurality of power strips 100 , 200 , 300 , 400 , 500 may also receive power from at least one power supply source 10 to operate.

[0739] For example, when an abnormality occurs in the first power board 100 and the DC power is supplied from the second power board 200 to the first power board 100, the second power board 200 can convert the power received from the system power supply G into the DC power through the 2-1 conversion device 210#1 and transmit it to each of the more than one second power conversion devices 220, and can further receive power from the bypass power supply P and convert it into the DC power through the 2-3 conversion device 210#3, and transmit the DC power converted by the 2-3 conversion device 210#3 to each of the more than one second power conversion devices 120 of the first power board 100 through the bus line 1.

[0740] In the example case described above, the first circuit breaker 130a of the first power strip 100 and the second circuit breaker 230b of the second power strip 200 can be closed so that the first power strip 100 and the second power strip 200 are connected to the bus line 1, thereby supplying the DC power from the second power strip 200 to the first power strip 100 through the bus line 1.

[0741] As described above, each of the plurality of power strips 100, 200, 300, 400, 500 receives power from more than one power supply source 10 to operate, thereby enabling power supply between the plurality of power strips 100, 200, 300, 400, 500, that is, enabling UPS functions between the plurality of power strips 100, 200, 300, 400, 500.

[0742] As described above, the plurality of power boards 100 , 200 , 300 , 400 , 500 that operate in a manner of converting and supplying the DC power may be controlled by the control device 600 .

[0743] The control device 600 can communicate with each of the plurality of power strips 100, 200, 300, 400, 500 to control each of the plurality of power strips 100, 200, 300, 400, 500 based on status information received from each of the plurality of power strips 100, 200, 300, 400, 500.

[0744] For example, the conversion and supply of the DC power and the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300, 400, 500 can be controlled based on the status information of the DC power and the driving power received from each of the plurality of power boards 100, 200, 300, 400, 500.

[0745] The control device 600 can communicate with each of the plurality of power strips 100, 200, 300, 400, 500 to control the conversion and supply of the driving power of each of the plurality of power strips 100, 200, 300, 400, 500 based on the status information received from each of the plurality of power strips 100, 200, 300, 400, 500, or control the first and second circuit breakers 130, 230, 330, 430, 530 included in each of the plurality of power strips 100, 200, 300, 400, 500.

[0746] In addition, the control device 600 can also sense the states of the plurality of power supply sources 10 and the loads 20 or receive information about the states of the plurality of power supply sources 10 and the loads 20 from an external communication unit, and based on the states of the plurality of power supply sources 10 and the loads 20, control the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300, 400, 500, or control the first and second circuit breakers 130, 230, 330, 430, 530 included in each of the plurality of power boards 100, 200, 300, 400, 500.

[0747] In this case, the control device 600 can transmit control instructions regarding the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300, 400, 500 or the control of the first and second circuit breakers 130, 230, 330, 430, 530 included in each of the multiple power boards 100, 200, 300, 400, 500 to each of the multiple power boards 100, 200, 300, 400, 500, so as to perform control based on the control instructions through the control unit 140, 240, 340, 440, 540 included in each of the multiple power boards 100, 200, 300, 400, 500.

[0748] For example, when an abnormality occurs in the system power supply G that is supplying power to the plurality of power boards 100, 200, 300, 400, 500 as a whole, a control instruction can be transmitted to the control unit 140, 240, 340, 440, 540 included in each of the plurality of power boards 100, 200, 300, 400, 500 to control the first and second circuit breakers 130, 230, 330, 430, 530 to open the circuit to cut off the power supply from the system power supply G and switch to other supply sources, and receive power from a power source other than the system power supply G to convert and supply the DC power supply, so that control can be performed to open the circuit of each of the first and second circuit breakers 130, 230, 330, 430, 530, receive power from the bypass power supply P or the battery power supply B to convert and supply the DC power supply.

[0749] The control device 600 for controlling the plurality of power boards 100, 200, 300, 400, 500 as described above can determine the abnormal power board among the plurality of power boards 100, 200, 300, 400, 500, close the first circuit breaker 130a, 230a, 330a, 430a, 530a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b, 530b of the supply target power board that supplies the DC power to the abnormal power board, and control the supply of the DC power from the supply target power board to the abnormal power board through the bus line 1.

[0750] The control device 600 can open the plurality of first and second circuit breakers 130, 230, 330, 430, 530 under normal circumstances, and when supplying the DC power to the abnormal power board, can close the first circuit breaker 130a, 230a, 330a, 430a, 530a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b, 530b of the supply target power board.

[0751] That is, the control device 600 can open the plurality of first and second circuit breakers 130, 230, 330, 430, 530 under normal circumstances, and when it is determined that an abnormal power board has occurred among the plurality of power boards 100, 200, 300, 400, 500, the first circuit breaker 130a, 230a, 330a, 430a, 530a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b, 530b of the supply target power board that supplies the DC power to the abnormal power board can be closed.

[0752] The control device 600 that performs control to supply the DC power to the abnormality-occurring power board as described above may be configured as follows: Fig. 20 The process shown controls the supply of the DC power.

[0753] like Fig. 20 As shown, the control device 600 can determine the abnormal power board (P100'), close the first circuit breaker 130a, 230a, 330a, 430a, 530a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b, 530b of the supply target power board that supplies the DC power to the abnormal power board (P200'), so as to supply the DC power from the supply target power board to the abnormal power board (P300') through the bus line 1.

[0754] The control device 600 can detect the status of any one or more of each of the multiple power boards 100, 200, 300, 400, 500, and compare the detection result with a preset status standard. According to the comparison result, when any one or more of the multiple power boards 100, 200, 300, 400, 500 corresponds to the status standard, the power board corresponding to the status standard can be judged as the abnormal power board (P100').

[0755] The status standard may include abnormal standards regarding the status of any one or more of the multiple power supply sources 10, the multiple first power conversion devices 110, 210, 310, 410, 510 included in the multiple power boards 100, 200, 300, 400, 500, the DC power supplies of the multiple power boards 100, 200, 300, 400, 500, and the driving power supplies.

[0756] In addition, when receiving abnormality occurrence information from a plurality of the power strips 100, 200, 300, 400, 500, the control device 600 may determine the power strip that sent the abnormality occurrence information as the abnormality occurrence power strip (P100').

[0757] When supplying the DC power to the abnormality occurring power board, the control device 600 may transmit reception request information regarding reception of the DC power to the abnormality occurring power board, and transmit supply request information regarding supply of the DC power to the supply target power board.

[0758] When it is determined that the abnormal power board has occurred (P100') and the DC power is supplied to the abnormal power board, the control device 600 can transmit reception request information about the reception of the DC power to the abnormal power board, transmit supply request information about the supply of the DC power to the supply target power board, and control the abnormal power board to close the first circuit breaker 130a, 230a, 330a, 430a, 530a, and control the supply target power board to close the second circuit breaker 130b, 230b, 330b, 430b, 530b (P200').

[0759] The abnormal power board can close the first circuit breaker 130a, 230a, 330a, 430a, 530a (P200') according to the received request information to receive the DC power (P300') from the bus line 1 through the power supply end, and the supply object power board can close the second circuit breaker 130b, 230b, 330b, 430b, 530b (P200') according to the supply request information to supply the DC power (P300') from the second output end to the bus line 1.

[0760] That is, the abnormal power board closes the first circuit breakers 130a, 230a, 330a, 430a, and 530a, and the supply object power board closes the second circuit breakers 130b, 230b, 330b, 430b, and 530b (P200'). Thus, the supply object power board can supply the DC power from the second output end to the bus line 1, and the abnormal power board can receive the DC power from the bus line 1 through the power end (P300').

[0761] The control method of the power supply system 1000 (hereinafter referred to as the control method) as described above may be an operation method of the power supply system 1000 or a method for controlling the operation.

[0762] The control method is as follows Figure 1a The control method of the power supply system 1000 shown in the figure, the power supply system 1000 includes: a plurality of power boards 100, 200, 300, 400, which convert the power received from each of the plurality of power supply sources 10 including a first alternating current power supply 10#1 and a second alternating current power supply 10#3 supplying AC power and a battery power supply 10#2 storing DC power into DC power, and convert the DC power into a driving power for driving a load 20 to supply the driving power to the load 20; a bus line 1, which is connected to each of the plurality of power boards 100, 200, 300, 400 outputting the driving power. The power supply terminal of the DC power supply is connected to a second output terminal which is separated from the power supply terminal and outputs the DC power supply, so that the DC power converted in the plurality of power supply boards 100, 200, 300, 400 is turned on; a plurality of first circuit breakers 130a, 230a, 330a, 430a are arranged between each of the power supply terminals and the bus line 1 to limit the connection between the power supply terminals and the bus line 1; and a plurality of second circuit breakers 130b, 230b, 330b, 430b are arranged between each of the second output terminals and the bus line 1 to limit the connection between the second output terminals and the bus line 1, as shown in FIG. Fig.21As shown, the control method includes: a step of controlling the operation of each of the plurality of power boards 100, 200, 300, 400 according to the power supply status of each of the plurality of power boards 100, 200, 300, 400 (not shown); a step of determining an abnormal power board among the plurality of power boards 100, 200, 300, 400 (S10); a step of transmitting information about the reception / supply of the DC power to the determined abnormal power board and a supply target power board that supplies the DC power to the abnormal power board (S20); a step of closing the first circuit breaker 130a, 230a, 330a, 430a of the abnormal power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply target power board (S30); and a step of the supply target power board supplying the DC power to the abnormal power board through the bus line 1 (S40).

[0763] The control method may be executed by the control device 600 .

[0764] The specific sequence of the control method can be as follows Fig. 22 shown.

[0765] The steps of controlling the operation of each of the plurality of power strips 100 , 200 , 300 , 400 may be the same as the above-described embodiment of the power supply system 1000 .

[0766] The step of controlling the operation of each of the plurality of power strips may be a step of controlling the operation of each of the plurality of power strips 100 , 200 , 300 , 400 to convert the power received from each of the plurality of power supply sources 10 into the DC and supply it to the load 20 .

[0767] Here, when the power supply of the first AC power source 10#1 and the second AC power source 10#3 is interrupted, the battery power source 10#2 supplies the stored power to the plurality of power strips 100, 200, 300, 400 while the power supply is switched and restored.

[0768] That is, when the power supply of the first AC power source 10 # 1 and the second AC power source 10 # 3 is interrupted, the battery power source 10 # 2 can maintain the power supply of the plurality of power strips 100 , 200 , 300 , 400 .

[0769] In the step of controlling the operation of each of the plurality of power strips, each of the plurality of power strips 100, 200, 300, 400 can be controlled to receive power from the first AC power source 10#1 and the second AC power source 10#3 in turn, and the power supply can be maintained by the battery power source 10#2 during the period when the power supply of the first AC power source 10#1 or the second AC power source 10#3 is switched.

[0770] The plurality of power supply sources 10 may further include an emergency power supply 10#4, which supplies emergency generated power to the load 20 when the power supply of the first AC power supply 10#1, the second AC power supply 10#3 and the battery power supply 10#2 is interrupted.

[0771] Thus, when the power supply of the battery power source 10#2 in each of the plurality of power boards 100, 200, 300, 400 is interrupted, power can be supplied to the load 20 through the emergency power source 10#4 to maintain the power supply to the load 20.

[0772] In the step of controlling the operation of each of the plurality of power boards 100, 200, 300, 400, when the states of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 that receives power from the first AC power supply 10#1 correspond to a normal state, power can be received from the first AC power supply 10#1 and the DC power can be converted by the first conversion device 110#1, 210#1, 310#1, 410#1.

[0773] In the step of controlling the operation of each of the plurality of power boards 100, 200, 300, 400, when an abnormality occurs in one or more of the first AC power supply 10#1 and the first conversion devices 110#1, 210#1, 310#1, 410#1 and the power supply is interrupted, the first AC power supply 10#1 and the first conversion devices 110#1, 210#1, 310#1, 410#1 can be switched to the second AC power supply 10#3 and the second conversion devices 110#3, 210#3, 310#3, 410#3 that receive power from the second AC power supply 10#3.

[0774] In the step of controlling the operation of each of the plurality of power boards 100, 200, 300, 400, when an abnormality occurs in one or more of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 and the power supply is switched to the second AC power supply 10#3 and the second conversion device 110#2, 210#2, 310#2, 410#2, during the period when the power supply is switched to the second AC power supply 10#3 and the second conversion device 110#3, 210#3, 310#3, 410#3, power can be received from the battery power supply 10#2, and the DC power can be converted by the second conversion device 110#2, 210#2, 310#2, 410#2 that receives power from the battery power supply 10#2.

[0775] That is, during the period when the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1 are switched to the second AC power supply 10#3 and the second conversion device 110#2, 210#2, 310#2, 410#2, the DC power supply can be converted by the battery power supply 10#2 and the second conversion device 110#2, 210#2, 310#2, 410#2 to perform power supply uninterruptedly.

[0776] In the step of controlling the operation of each of the plurality of power boards 100, 200, 300, 400, when the second circuit breaker 130b, 230b, 330b, 430b is in a closed state, when an abnormality occurs in one or more of the first AC power supply 10#1 and the first conversion device 110#1, 210#1, 310#1, 410#1, power can be received from the battery power supply 10#2, and the DC power can be converted through the battery power supply 10#2 and the second conversion device 110#2, 210#2, 310#2, 410#2 until the power supply is restored.

[0777] That is, during the period when the second circuit breakers 130b, 230b, 330b, 430b are closed and power is supplied to the bus line 1, when an abnormality occurs in one or more of the first AC power supply 10#1 and the first conversion devices 110#1, 210#1, 310#1, 410#1, the power supply to the bus line 1 can be interrupted, and the power supply can be restored by using the conversion device corresponding to the second output end, and during the period when the power supply is restored by using the conversion device corresponding to the second output end, the power supply can be maintained by the battery power supply 10#2 and the second conversion devices 110#2, 210#2, 310#2, 410#2.

[0778] In this case, the restoration of the power supply may refer to the process of opening the second circuit breakers 130b, 230b, 330b, 430b, converting the DC power converted by the conversion device corresponding to the second output terminal into the driving power supply, and supplying it to the load 20.

[0779] In the step of controlling the operation of each of the plurality of power strips 100 , 200 , 300 , 400 , as described above, the power supply of each of the plurality of power strips 100 , 200 , 300 , 400 may be controlled.

[0780] In the determination step (S10), an abnormality-occurring power board where an abnormality occurs may be determined from among the plurality of power boards 100, 200, 300, 400 during operation of the plurality of power boards 100, 200, 300, 400.

[0781] In the judgment step (S10), if Fig. 22 As shown, it may include: a step of detecting one or more states of each of the plurality of power strips 100, 200, 300, 400 (S11a); a step of comparing the detection result with a preset state standard (S12a); and a step of judging one or more power strips among the plurality of power strips 100, 20, 300, 400 corresponding to the state standard as the abnormal power strip based on the comparison result (S13a).

[0782] In the step of detecting more than one state (S11a), one or more states of the plurality of power supply sources 10, the plurality of first power conversion devices 110, 210, 310, 410 included in the plurality of power boards 100, 200, 300, 400, the DC power supplies of the plurality of power boards 100, 200, 300, 400 and the driving power supplies can be detected.

[0783] In the step of comparing with the status standard (S12a), the detection result can be compared with the status standard including abnormal standards regarding the status of one or more of the plurality of power supply sources 10, the plurality of the first power conversion devices 110, 210, 310, 410, the DC power supply and the driving power supply.

[0784] In the step (S13a) of judging as an abnormal power board, the detection result of detecting the status of any one or more of the multiple power supply sources 10, the multiple first power conversion devices 110, 210, 310, 410, the DC power supply and the driving power supply of each of the multiple power boards 100, 200, 300, 400 is compared with the status standard including the abnormal standard regarding the status of any one or more of the multiple power supply sources 10, the multiple first power conversion devices 110, 210, 310, 410, the DC power supply and the driving power supply. One or more power boards among the multiple power boards 100, 20, 300, 400 corresponding to the status standard can be judged as the abnormal power board.

[0785] As described above, in the judging step (S10) of judging the abnormal power board, the power board in which the power supply of the first AC power supply 10#1 and the second AC power supply 10#3 among the plurality of power boards 100, 200, 300, 400 is abnormal can be judged as the abnormal power board.

[0786] That is, the abnormal power board may be a power board where the first AC power supply 10#1 and the second AC power supply 10#3 are abnormal and cannot supply power to the first AC power supply 10#1 and the second AC power supply 10#3.

[0787] The abnormality-occurring power board may be a power board in which the power supply of the first AC power source 10#1 and the second AC power source 10#3 is abnormal but the power supply of the battery power source 10#2 can be realized.

[0788] That is, in the judging step (S10), the power board in which the power supply of the first AC power source 10#1 and the second AC power source 10#3 is abnormal but can realize the power supply of the battery power source 10#2 can be judged as the abnormal power board.

[0789] Thus, the target power board can supply power to the abnormality-occurring power board that has abnormality in power supply of the first AC power source 10#1 and the second AC power source 10#3 but can realize power supply of the battery power source 10#2.

[0790] In addition, the judgment step (S10) may also include: a step (S11b) of receiving abnormality occurrence information from a plurality of the power boards 100, 200, 300, 400; and a step (S12b) of judging the power board that sends the abnormality occurrence information as the abnormality occurrence power board.

[0791] In the step (S11b) of receiving abnormality occurrence information, the power board where the abnormality occurs among the plurality of power boards 100, 200, 300, 400 can send the abnormality occurrence information, so that the abnormality occurrence information can be received from the plurality of power boards 100, 200, 300, 400.

[0792] In the step (S12b) of determining as the abnormality occurring power board, the power board that transmits the abnormality occurring information received in the step (S11b) of receiving the abnormality occurring information may be determined as the abnormality occurring power board.

[0793] like Fig. 22 As shown, the judging step (S10) of judging the abnormal power board as described above may include: the step of detecting more than one state (S11a); the step of comparing with the state standard (S12a); and the step of judging the power board corresponding to the state standard as the abnormal power board (S13a), or include the step of receiving the abnormal occurrence information (S11b) and the step of judging the power board that sends the abnormal occurrence information as the abnormal power board (S12b), so as to judge the abnormal power board.

[0794] That is, in the judgment step (S10), the abnormal power board can be judged in the order of the step of detecting more than one state (S11a), the step of comparing with the state standard (S12a), and the step of judging the power board corresponding to the state standard as the abnormal power board (S13a), or the abnormal power board can be judged in the order of the step of receiving the abnormal occurrence information (S11b) and the step of judging the power board that sends the abnormal occurrence information as the abnormal power board (S12b).

[0795] In the transmission step ( S20 ), information on the reception / supply of the DC power may be transmitted to the abnormality occurrence power board and the supply target power board determined in the determination step ( S10 ), respectively.

[0796] The transmission step (S20) may include: a step (S21) of transmitting reception request information regarding reception of the DC power to the abnormality occurrence power board; and a step (S22) of transmitting supply request information regarding supply of the DC power to the supply target power board.

[0797] In the step of transmitting the receiving request information (S21), the receiving request information can be transmitted to the abnormal power board to control the abnormal power board to close the first circuit breaker 130a, 230a, 330a, 430a to receive the receiving request information of the DC power supply from the bus line 1 through the power supply end.

[0798] In the step (S22) of transmitting the supply request information, the supply request information can be transmitted to the supply target power board to control the supply target power board to close the second circuit breaker 130b, 230b, 330b, 430b to supply the DC power from the second output terminal to the bus line 1.

[0799] In the closing step (S30), the first circuit breaker 130a, 230a, 330a, 430a of the abnormality-occurring power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply object power board can be closed according to the receiving request information and the supply request information transmitted to the abnormality-occurring power board and the supply object power board respectively in the transmission step (S20).

[0800] In the supply step (S40), since the first circuit breaker 130a, 230a, 330a, 430a of the abnormality occurring power board and the second circuit breaker 130b, 230b, 330b, 430b of the supply object power board are closed in the closing step (S30), the supply object power board can supply the DC power to the abnormality occurring power board through the bus line 1.

[0801] In the supply step (S40), the abnormality-occurring power board may receive the DC power from the bus line 1 through the power supply terminal, and the supply target power board may supply the DC power to the bus line 1 from the second output terminal.

[0802] That is, in the supply step (S40), the supply target power board can supply the DC power to the bus line 1 from the second output terminal, and the abnormality occurring power board can receive the DC power from the bus line 1 through the power terminal.

[0803] The supply target power board may convert the power received from the second AC power source 10 # 3 into the DC power and supply it to the bus line 1 .

[0804] That is, the target power board may be a power board that receives power from the first AC power source 10 # 1 and operates, and can supply power from the second AC power source 10 # 3 .

[0805] Thus, the target power board can receive power from the first AC power source 10 # 1 and operate, and can convert the power received from the second AC power source 10 # 3 into the DC power and supply it to the bus line 1 .

[0806] In the supply step (S40), when the power supply of the first AC power supply 10#1 of the supply target power board is interrupted, the supply target power board can be switched to another power board to supply the DC power from the switched power board to the abnormality occurring power board.

[0807] That is, in the supply step (S40), when the power supply of the first AC power supply 10#1 of the supply object power board is interrupted, the supply object power board can be switched to other power boards to supply the DC power from the switched power board to the abnormality occurring power board, so that the power supply of the supply object power board that is supplying the DC power to the bus line 1 through the second AC power supply 10#2 is switched to the second AC power supply 10#3.

[0808] After the power supply of the first AC power supply 10#1 is interrupted, the supply object power board can receive power from the battery power supply 10#2 and convert it into the DC power supply during the period when the supply object power board is disconnected from the bus line 1 and the power supply of the second AC power supply 10#2 is restored.

[0809] That is, from the time when the power supply of the first AC power source 10 # 1 is interrupted until the power supply of the second AC power source 10 # 2 is restored, the target power strip can maintain the power supply through the battery power source 10 # 2 .

[0810] The other power supply board may convert the power received from the second AC power source 10 # 3 into the DC power and supply it to the bus line 1 .

[0811] That is, the other power board may be a power board that receives power from the first AC power source 10 # 1 and operates, and can also supply power from the second AC power source 10 # 3 .

[0812] In the supply step (S40), when the supply object power board is switched to other power boards, the second circuit breakers 130b, 230b, 330b, 430b of the supply object power board can be opened to disconnect the supply object power board from the bus line 1, and the second circuit breakers 130b, 230b, 330b, 430b of the other power boards can be closed to connect the other power boards to the bus line 1.

[0813] As described above, in the supply step (S40), the supply object power board supplies the DC power from the second output end to the bus line 1, and the abnormality occurring power board receives the DC power from the bus line 1 through the power end, thereby transmitting the DC power to one or more second power conversion devices 120, 220, 320, 420 of the abnormality occurring power board, thereby continuously supplying the driving power to the load 20 of the abnormality occurring power board.

[0814] Therefore, the control method can control the power supply system 1000 so as to control the power supply between the multiple power boards 100, 200, 300, 400, that is, the UPS function between the multiple power boards 100, 200, 300, 400 is executed, so that even when various abnormal situations occur in the system (System), the power supply to the load can be maintained without interruption, and appropriate and stable power supply responses can be made for various abnormal situations occurring in the system (System).

[0815] In the control method for controlling the power supply between each of the plurality of power boards 100, 200, 300, 400 and the plurality of power boards 100, 200, 300, 400 in the order as described above, when the abnormality-occurring power boards are judged to be plural in the judging step (S40), each of the plurality of abnormality-occurring power boards can receive power from the battery power supply 10#2 and convert it into the DC power supply during the period when the first AC power supply 10#1 or the second AC power supply 10#3 is restored.

[0816] That is, when there are a plurality of abnormality-occurring power boards, each of the abnormality-occurring power boards may be controlled to receive power from the battery power source 10 # 2 and maintain power supply to the load 20 .

[0817] In addition, in the control method, when it is determined that the battery power supply 10#2 of the abnormal power supply board is abnormal in the step of determining the abnormal power supply board among the multiple power supply boards 100, 200, 300, 400, the power supply board where the abnormal battery power supply 10#2 occurs can supply power to the load 20 by means of the emergency power supply 10#4 that supplies emergency power generation power to the load 20 during the period when the first AC power supply 10#1 or the second AC power supply 10#2 is restored.

[0818] That is, when it is determined that the battery power supply 10#2 of the abnormal power board is abnormal, the abnormal power board can be controlled to receive power from the emergency power supply 10#4 and maintain power supply to the load 20.

[0819] The following will refer to Figures 8 to 15 A specific operation example of the power supply system 1000 operated by the control method described above will be described.

[0820] Figures 8 to 15 The example diagram shows an example of an operation process caused by an abnormality when the plurality of power boards 100, 200, 300, 400, and 500 are set to five in sequence. The specific implementation form of the power supply system 1000 can also be Figures 10 to 17 The invention may be implemented in various forms other than the examples shown.

[0821] Figure 8 The example shown in FIG. 1 is an example in which, due to an abnormality in the first AC power supply 10#1 of the first power supply board 100 of the plurality of power supply boards 100, 200, 300, 400, 500, the first AC power supply 10#1 is switched to the second AC power supply 10#3, thereby transmitting the DC power to one or more second power conversion devices 110, such as Fig. 9 As shown, when the second AC power source 10#3 is abnormal and cannot transmit the DC power to more than one second power conversion device 110, as shown in Fig.10 As shown, the first circuit breaker 130a of the first power board 100 can be closed, and the second circuit breaker 230b of the second power board 200 adjacent to the first power board 100 can be closed, so that the DC power can be transmitted to one or more second power conversion devices 110 through the conversion device 210#3 corresponding to the second output end of the second power board 200.

[0822] If, such as Fig.11As shown, when the second power board 200 receives power from the second AC power supply 10#3, and the DC power is supplied to one or more second power conversion devices 220 by the conversion device 210#3 connected to the second AC power supply 10#3 and corresponding to the second output terminal, since the DC power cannot be received from the second power board 200, the second circuit breaker 330b of the third power board 300 adjacent to the first power board 100 other than the second power board 200 can be closed, so that the DC power is transmitted to one or more second power conversion devices 110 through the conversion device 310#3 corresponding to the second output terminal of the third power board 300.

[0823] In such Fig.11 In the state shown, Fig.12 As shown, when the first AC power supply 10#1 of the second power board 200 and the conversion device 210#3 connected to the second AC power supply 10#3 are abnormal, the bus line 1 is in a state of supplying the DC power from the third power board 300 to the first power board 100, so the second power board 200 cannot receive the DC power from other power boards, such as Fig.13 As shown, the second power board 200 can switch the second AC power source 10#3 to a battery power source 10#2, thereby transmitting the DC power to more than one second power conversion device 210 through a conversion device 210#2 connected to the battery power source 10#2.

[0824] If, in such Fig.13 In the state shown, Fig.14 As shown, when the battery power source 10#2 of the second power board 200 is abnormal, the plurality of power supply sources 10 supplying power to the second power board 200 are all in a state of being unable to supply power, such as Fig.14 As shown, the second power board 200 can cut off the battery power 10#2 and switch to the emergency power 10', so that the driving power can be directly transmitted from the emergency power 10' to the load 20.

[0825] As described above, when an abnormality occurs in one or more of the plurality of power strips 100, 200, 300, 400, 500, the first and second circuit breakers 130, 230, 330, 430, 530 can be controlled according to the state of each of the plurality of power strips 100, 200, 300, 400, 500, or the power supply of the plurality of power supply sources 10 can be switched, thereby not only being able to perform the power supply between the plurality of power strips 100, 200, 300, 400, 500, that is, the UPS function between the plurality of power strips 100, 200, 300, 400, 500, but also being able to enable each of the plurality of power strips 100, 200, 300, 400, 500 to operate uninterruptedly without cutting off the power supply.

[0826] Therefore, in the control method, even if various abnormal situations occur in the system, power supply to the load can be maintained without interruption, and appropriate and stable power supply response can be made to various abnormal situations occurring in the system.

[0827] The embodiments of the power supply device, power supply system, and power supply system control method of the present invention as described above can be applied to power supply devices, power supply systems, and power supply system operation methods that supply / use DC power. In particular, they can be usefully applied to DC UPS modules and power supply systems having the modules, and can also be applied to and implemented in motor control boards, motor control systems, motor operation systems, etc. that control multiple motor loads.

[0828] Although the specific embodiments of the present invention are described above, various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be limited not only by the claims described below, but also by the contents equivalent to the claims.

[0829] As described above, although the present invention is described by limited embodiments and drawings, the present invention is not limited to the above embodiments, and a person skilled in the art of the present invention can make various modifications and variations according to the above description. Therefore, the idea of ​​the present invention should only be understood by the claims recorded below, and all equivalent or equivalent variations thereof will be considered to be within the scope of the idea of ​​the present invention.

[0830] Description of Reference Numerals

[0831] 10: Power supply source 20: Load

[0832] 100 (200, 300, 400, 500): Power supply device (power board)

[0833] 110 (210, 310, 410, 510): first power conversion device (converter)

[0834] 120 (220, 320, 420, 520): second power conversion device (inverter)

[0835] 130a (230a, 330a, 430a, 530a): first circuit breaker

[0836] 130b (230b, 330b, 430b, 530b): Second circuit breaker

[0837] 140 (240, 340, 440, 540): Control unit

[0838] 600: Control device 1000: Power supply system

Claims

1. A control method for a power supply system, The power supply system comprises: a plurality of power boards, converting power received from each of a plurality of power supply sources into DC power, converting the DC power into driving power for driving a load, and supplying the driving power to the load, the plurality of power supply sources including a first alternating current power source and a second alternating current power source supplying AC power, and a battery power source storing DC power; A bus line connected to a power supply terminal of each of the plurality of power boards for inputting and outputting the DC power supply, so as to connect the DC power converted in the plurality of power boards; a plurality of circuit breakers, arranged between each of the power terminals and the bus line, to limit the connection between the power terminals and the bus line; as well as a control device for monitoring and controlling a plurality of said power boards, Characterized in that the control method comprises: When an abnormality occurs in at least one of the plurality of power boards, determining a target power board to supply the DC power to the abnormal power board; A step of closing one or more circuit breakers among the plurality of circuit breakers connected to the abnormality-occurring power board and the target power board; The supply target power board supplies the DC power to the abnormality-occurring power board through the bus line; and When an abnormality occurs in the target power board that is supplying the DC power to the abnormality-occurring power board, the step of replacing the target power board, The replacement steps include: The step of determining a supply replacement power board for replacing the supply target power board according to the supply sequence; The step of opening the circuit breaker connected to the supply target power board and closing the circuit breakers connected to the abnormality-occurring power board and the supply replacement power board; and The supply replacement power supply board supplies the DC power to the abnormality occurrence power supply board through the bus line.

2. The control method of the power supply system according to claim 1, characterized in that: Also includes: During the period of controlling the operation of each of the plurality of power boards according to the power supply status of each of the plurality of power boards, a step of determining an abnormality-occurring power board among the plurality of power boards.

3. The control method of the power supply system according to claim 2, characterized in that: In the step of determining the abnormal power board among the plurality of power boards, A power supply strip in which the power supply of the first AC power source and the second AC power source is abnormal among the plurality of power supply strips is determined as the abnormality-occurring power supply strip.

4. The control method of the power supply system according to claim 1, characterized in that: In the step of determining the target power board to supply the DC power to the power board where the abnormality occurred, The supply order is determined among the remaining power supply boards except the abnormality-occurring power supply board, and the supply target power supply board is determined based on the supply order.

5. The control method of the power supply system according to claim 4, characterized in that: In the step of determining the target power board to supply the DC power to the power board where the abnormality occurred, The supply sequence is determined according to at least one of the states of the plurality of power supply sources of each of the remaining power boards and the position where each of the remaining power boards is configured.

6. The control method of the power supply system according to claim 5, characterized in that: In the step of determining the target power board to supply the DC power to the power board where the abnormality occurred, The state of the available capacity of the battery power in the plurality of the power supply sources of each of the remaining power boards is determined, so as to determine the supply sequence according to at least one of the determined available capacity and the position where each of the remaining power boards is configured.

7. The control method of the power supply system according to claim 6, characterized in that: In the step of determining the target power board to supply the DC power to the power board where the abnormality occurred, The proximity of each of the remaining power boards to the abnormality-occurring power board is determined to determine the supply sequence based on at least one of the available capacity and the determined proximity.

8. The control method of the power supply system according to claim 7, characterized in that: In the step of determining the target power board to supply the DC power to the power board where the abnormality occurred, When the supply order is determined based on the available capacity, The supply priority is determined according to the order of the available capacities.

9. The control method of the power supply system according to claim 7, characterized in that: In the step of determining the target power board to supply the DC power to the power board where the abnormality occurred, In the case where the supply order is determined based on the proximity, The supply sequence is determined according to the order of proximity.

10. The control method of the power supply system according to claim 1, characterized in that: Also includes: The step of transmitting information on the reception and supply of the DC power to the determined abnormality-occurring power board and the supply target power board, respectively.

11. The control method of the power supply system according to claim 1, characterized in that: In the step of providing, The abnormality-occurring power board receives the DC power from the bus line through the power supply terminal, The supply target power board supplies the DC power to the bus line.

12. A control method for a power supply system, The power supply system comprises: a plurality of power boards, converting power received from each of a plurality of power supply sources into DC power, converting the DC power into driving power for driving a load, and supplying the driving power to the load, the plurality of power supply sources including a first alternating current power source and a second alternating current power source supplying AC power, and a battery power source storing DC power; A bus line connected to a power supply terminal of each of the plurality of power supply boards, to which the DC power supply is input, and a second output terminal separated from the power supply terminal and outputting the DC power supply, so as to connect the DC power converted in the plurality of power supply boards; a plurality of first circuit breakers, arranged between each of the power terminals and the bus line, to limit the connection between the power terminals and the bus line; and a plurality of second circuit breakers, arranged between each of the second output terminals and the bus line, to limit the connection between the second output terminals and the bus line, Characterized in that the control method comprises: The step of controlling the operation of each of the plurality of power boards according to the power supply status of each of the plurality of power boards; The step of determining the abnormal power board among the plurality of power boards; The step of transmitting information on the reception and supply of the DC power to the determined abnormality-occurring power board and a supply target power board that supplies the DC power to the abnormality-occurring power board, respectively; The step of closing the first circuit breaker of the abnormality-occurring power board and the second circuit breaker of the supply target power board; and The supply target power board supplies the DC power to the abnormality occurrence power board through the bus line.

13. The control method of the power supply system according to claim 12, characterized in that: In the step of controlling the operation of each of the plurality of power boards, In the case where the states of the first AC power source and the first conversion device receiving power from the first AC power source correspond to a normal state, Power is received from the first AC power source and converted to DC power by the first conversion device.

14. The control method of the power supply system according to claim 13, characterized in that: In the step of controlling the operation of each of the plurality of power boards, When one or more of the first AC power source and the first conversion device fails and the power supply is interrupted, The first AC power source is switched to the second AC power source, and the first conversion device is switched to a third conversion device that receives power from the second AC power source.

15. The control method of the power supply system according to claim 14, characterized in that: In the step of controlling the operation of each of the plurality of power boards, When the second AC power source and the third conversion device are switched, During the switching to the second AC power source and the third conversion device, power is received from the battery power source, and the DC power source is converted by the second conversion device that receives power from the battery power source.

16. The control method of the power supply system according to claim 14, characterized in that: In the step of controlling the operation of each of the plurality of power boards, When the second circuit breaker is in a closed state and one or more of the first AC power source and the first conversion device is abnormal, Power is received from the battery power source, and the DC power source is converted by a second conversion device that receives power from the battery power source until power supply is restored.

17. The control method of the power supply system according to claim 12, characterized in that: The step of determining the abnormal power board among the plurality of power boards comprises: The step of detecting one or more states of each of the plurality of power boards; The step of comparing the test results with a preset status standard; and Based on the comparison result, a step of determining a power supply board corresponding to the status standard among the plurality of power supply boards as the abnormality-occurring power supply board.

18. The control method of the power supply system according to claim 17, characterized in that: In the detection step, detecting the state of at least one of a plurality of the power supply sources, a plurality of first conversion devices included in a plurality of the power boards, the DC power supplies of a plurality of the power boards, and the driving power supplies, In the comparing step, The detection result is compared with the status standard including an abnormality standard regarding the status of one or more of the plurality of the power supply sources, the plurality of the first conversion devices, the DC power source, and the driving power source.

19. The control method of the power supply system according to claim 17, characterized in that: In the step of determining the abnormal power board among the plurality of power boards, A power supply strip in which the power supply of the first AC power source and the second AC power source is abnormal among the plurality of power supply strips is determined as the abnormality-occurring power supply strip.

20. The control method of the power supply system according to claim 19, characterized in that: The abnormality-occurring power board is a power board in which the power supply of the first AC power source and the second AC power source is abnormal but the power supply of the battery power source can be realized.

21. The control method of the power supply system according to claim 12, characterized in that: The steps of determining include: A step of receiving abnormality occurrence information from a plurality of said power boards; and The step of determining that the power board that has transmitted the abnormality occurrence information is the abnormality occurrence power board.

22. The control method of the power supply system according to claim 12, characterized in that: The steps of transmitting include: a step of transmitting reception request information regarding reception of the DC power supply to the abnormality occurrence power supply board; and The step of transmitting supply request information regarding supply of the DC power source to the supply target power supply board.

23. The control method of the power supply system according to claim 12, characterized in that: In the step of providing, The abnormality-occurring power board receives the DC power from the bus line through the power supply terminal, The supply target power board supplies the DC power from the second output terminal to the bus line.

24. The control method of the power supply system according to claim 23, characterized in that: In the step of providing, When the power supply of the first AC power source to the power board to be supplied is interrupted, The supply target power board is switched to another power board, so that the DC power is supplied from the switched power board to the abnormality-occurring power board.

25. The control method of the power supply system according to claim 24, characterized in that: After the power supply from the first AC power source is interrupted, the supply target power board receives power from the battery power source and converts the power into the DC power source during a period in which the supply target power board is disconnected from the bus line and the power supply from the second AC power source is restored.

26. The control method of the power supply system according to claim 24, characterized in that: The other power supply board converts the power received from the second AC power supply into the DC power supply and supplies the DC power supply to the bus line.

27. The control method of the power supply system according to claim 24, characterized in that: In the step of providing, When the target power board is switched to another power board, The second circuit breaker of the target power board is opened to disconnect the target power board from the bus line, and the second circuit breaker of the other power board is closed to connect the other power board to the bus line.

28. The control method of the power supply system according to claim 12, characterized in that: In the step of determining the abnormal power board among the plurality of power boards, when it is determined that the abnormal power board is a plurality of power boards, Each of the plurality of abnormality occurrence power supply boards receives power from the battery power supply and converts the power into the DC power supply during a period in which the first AC power supply or the second AC power supply is restored.

29. The control method of the power supply system according to claim 12, characterized in that: In the step of determining an abnormality-occurring power board among the plurality of power boards, when it is determined that the battery power supply of the abnormality-occurring power board is abnormal, The power board in which the abnormality of the battery power supply occurs supplies power to the load by using an emergency power supply that supplies emergency generated power to the load while the first AC power supply or the second AC power supply is restored.

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