Power supply system

Abstract

The present specification relates to a power supply system capable of supplying power uninterruptedly, and relates to a power supply system that is provided with a circuit breaker for limiting each circuit connected to a plurality of power supply devices, and that opens and closes the circuit breaker to control the reception and supply of power according to various situations occurring on the system, thereby being able to perform a UPS function between a plurality of power supply devices.

Description

Technical Field

[0001] The present invention relates to a power supply system capable of supplying power uninterruptedly. 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 various loads can be connected together through a DC bus line. When connected to a common bus line in this way, there is an advantage that power can be received and supplied between adjacent power supply devices through the DC bus line. However, when the system is constructed in this way, there are limitations such as system stability problems, difficulty in controlling the reception and supply of power, and lack of response plans when accidents occur.

[0004] Since there are a large number of power supply devices with complex structures, when the compatibility between the devices is poor, the system operation cannot be performed stably. In addition, when the load supplied with power by each device is an important load that needs to be supplied with power at all times, it is necessary to set up a separate UPS device to deal with abnormal conditions. However, when the UPS device is set up, there is a problem that the system structure becomes more complicated, and the setting of the UPS device itself is not easy due to structural / design limitations. Moreover, as the structure becomes more complicated, the control of each device and system will inevitably become more complicated, and the risk of failure and accidents will increase accordingly. 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 operational response measures cannot be made according to the occurrence of various accidents. Summary of the invention

[0005] Problems to be solved by the invention

[0006] The present invention aims to improve the above-mentioned limitations of the prior art.

[0007] That is, the present specification aims to provide a power supply system that can improve the limitations of the prior art.

[0008] Specifically, the present invention aims to provide a power supply system in which a plurality of power supply devices arranged in the system can receive and supply power, so that each of the plurality of power supply devices can mutually perform UPS functions.

[0009] In addition, it is intended to provide a power supply system capable of effectively maintaining power supply to a load under various abnormal circumstances.

[0010] Furthermore, it is intended to provide a power supply system that can stably and appropriately cope with reception and supply of power according to various abnormal situations.

[0011] Technical solutions to the problem

[0012] In order to solve the above problems, the power supply system of the present invention provides a circuit breaker for limiting each circuit connected to a plurality of power supply devices, and opens and closes the circuit breaker according to various situations occurring in the system to control the reception and supply of power.

[0013] That is, the technical feature of the power supply system of the present invention is to set circuit breakers corresponding to a plurality of power supply devices, and receive and supply power by controlling the circuit breakers, thereby performing a UPS function between the plurality of power supply devices.

[0014] The above technical features can be applied to and implemented in a power supply system, and this specification provides an embodiment of a power supply system having the above technical features.

[0015] An embodiment of the power supply system of the present invention with the above technical features as a solution to the problem comprises: a plurality of power boards, which convert power received from one or more power supply sources into DC power, and convert the DC power into a driving power of a load and supply it to the load; a DC circuit, one end of which is connected to the other end to connect to each power supply terminal that inputs and outputs the DC power in each of the plurality of power boards, so as to connect the DC power converted by the plurality of power boards; and a plurality of circuit breakers, which are respectively arranged between the power supply terminals on the DC circuit to connect or disconnect with the DC power supply terminals. The circuits where the plurality of circuit breakers are located connect two power supply ends, and the plurality of circuit breakers change opening and closing according to the power supply status of at least one power board among the plurality of power boards, thereby connecting or limiting the DC power supply between the plurality of power boards, wherein, when the power supply of at least one power board among the plurality of power boards is interrupted, at least one of the circuit breakers connected to the power supply end of the power board whose power supply is interrupted becomes closed, thereby connecting at least one of the power supply ends on both sides of the power supply end of the interrupted power board to the power supply end of the interrupted power board.

[0016] In one embodiment, the one or more power supply sources may include: a first AC power source and a second AC power source that supply AC power; and a battery power source in which DC power is stored, so that when the power supply of the first AC power source and the second AC power source is interrupted, the stored power is supplied to the plurality of power strips during the period in which the power supply is switched and restored.

[0017] In one embodiment, after the power supply is interrupted, the stored power of the battery power source may be supplied to the plurality of power strips uninterruptedly until the power supply is switched and restored.

[0018] In one embodiment, one or more of the 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.

[0019] In one embodiment, each of the plurality of power boards may include: one or more first power conversion devices, converting the power received from one or more of the power supply sources into the DC power; and a second power conversion device, converting the DC power received from one or more of the first power conversion devices into the driving power and supplying it to the load.

[0020] In one embodiment, the plurality of power boards may supply the DC power to the second power conversion device through any one of the one or more first power conversion devices according to the state of the one or more power supply sources.

[0021] In one embodiment, when power supply from a conversion device that supplies the DC power to the second power conversion device is interrupted, the plurality of power boards may supply the DC power to the second power conversion device through other conversion devices other than the conversion device.

[0022] In one embodiment, during the period when the conversion device is switched to the other conversion device, one or more of the first power conversion devices may supply the DC power to the second power conversion device via the conversion device receiving power from the battery power source.

[0023] In one embodiment, in a plurality of the power boards, one side power terminal connected to the DC circuit can be connected to another side power terminal, so that the connection between the power terminals can be continuous.

[0024] In one embodiment, the connections between the power terminals of the plurality of power boards may be continuous, so that the connections between the plurality of power boards may form a loop structure.

[0025] In one embodiment, the connections between the power terminals of the plurality of power boards may be continuous, so that the connections between the plurality of power boards may form a loop structure.

[0026] In one embodiment, when the DC power source is connected between the plurality of power boards, the plurality of circuit breakers may be closed, and when the DC power source is limited between the plurality of power boards, the plurality of circuit breakers may be opened.

[0027] In one embodiment, among the plurality of circuit breakers, when the power supply to one or more power boards among the plurality of power boards is interrupted, one or more circuit breakers arranged between the power board to which the power supply is interrupted and a power board adjacent to the interrupted power board can become closed to connect the interrupted power board and the adjacent power board, so that the DC power is supplied from the adjacent power board to the interrupted power board.

[0028] In one embodiment, after power supply is interrupted, the interrupted power strip may be supplied with the DC power from a conversion device connected to the battery power until the turned-on DC power is supplied from the adjacent power strip.

[0029] In one embodiment, a control device may be further included for monitoring the status of at least one of the plurality of power boards and the plurality of circuit breakers, and controlling at least one of the plurality of power boards and the plurality of circuit breakers according to the monitoring result.

[0030] In addition, another embodiment of the power supply system of the present invention using the above-mentioned technical features as a solution to the problem includes: a plurality of loads; a plurality of power boards, converting the power received from each of the plurality of power supply sources into DC power, converting the DC power into a driving power for driving the plurality of loads, and supplying the driving power to the plurality of loads; a plurality of circuit breakers, arranged in each circuit connected to each of the plurality of power boards to limit the connection between the plurality of power boards; and a control device, controlling the opening and closing of the plurality of circuit breakers according to the state of each of the plurality of power boards, thereby controlling the reception and supply of the DC power between the plurality of power boards.

[0031] In one embodiment, the plurality of power boards may include: a plurality of converters, which convert power received from each of the plurality of power supply sources into DC power; a plurality of inverters, which convert the DC power into a driving power for driving a plurality of loads, and supply the driving power to the plurality of loads; a circuit breaker, which is arranged between an output terminal to which the outputs of the plurality of converters are commonly connected and an external connection terminal connected to the output terminal to limit the connection between the output terminal and the connection terminal; and a control unit, which controls the opening and closing of the circuit breaker according to the state of the DC power or the driving power, thereby controlling the reception and supply of the DC power.

[0032] In one embodiment, the control unit may perform control to select any one of the plurality of converters according to the states of the plurality of power supply sources, so that the selected converter transmits the DC power to each of the plurality of inverters.

[0033] In one embodiment, when an abnormality occurs in any one or more of the converter transmitting the DC power to the plurality of inverters and the power supply source corresponding to the converter, the control unit can control other converters except the converter to transmit the DC power to the plurality of inverters.

[0034] In one embodiment, when two or more of the plurality of power supply sources are abnormal, the control unit may control the circuit breaker to be closed, so as to receive the DC power from other power supply devices.

[0035] In one embodiment, when an abnormality occurs in other power supply devices connected to the bus line, the control unit may control the circuit breaker to be closed, thereby supplying DC power to the other power supply devices.

[0036] In one embodiment, the output terminal of each of the plurality of power boards for outputting the DC power supply can be connected to the output terminals of two adjacent power boards respectively.

[0037] In one embodiment, among the plurality of power boards, the output end of the power board on one side can be connected to the output end of the power board on another side, so that the connection between the output ends can form a loop.

[0038] In one embodiment, the plurality of power boards can select any one of the plurality of converters for converting the DC power according to the status of the plurality of power supply sources, and transmit the DC power to each of the plurality of inverters for converting the driving power through the selected converter.

[0039] In one embodiment, when an abnormality occurs in a converter that is transmitting the DC power to a plurality of inverters that convert the driving power and in any one or more of the power supply sources corresponding to the converter, the plurality of power boards can transmit the DC power to the plurality of inverters through other converters except the converter.

[0040] In one embodiment, each of the plurality of circuit breakers may be included in each of the plurality of power strips.

[0041] In one embodiment, the plurality of circuit breakers may be normally open and closed when actuated to limit the connection between the plurality of power strips.

[0042] In one embodiment, when an abnormality occurs in any one or more of the plurality of power boards, the control device can control to close the circuit breaker of any one of the circuits connected to the abnormal power board and the power board adjacent to the abnormal power board, so that the abnormal power board receives the DC power from the adjacent power board.

[0043] On the other hand, another embodiment of the power supply system of the present invention with the above-mentioned technical features as a solution to the problem includes: a plurality of power boards, which convert power received from one or more power supply sources into DC power, and convert the converted DC power into a driving power of a load and supply it to the load; a DC circuit, one end of which is connected to the other end, and is connected to each power supply terminal of the plurality of power boards and the supply board that inputs and outputs the DC power to connect the DC power converted by the plurality of power boards and the supply board; and a plurality of circuit breakers, which are respectively arranged between the power supply terminals on the DC circuit to connect or disconnect the two power supply terminals connected to the circuit where the plurality of circuit breakers are located, and a plurality of The circuit breaker changes opening and closing according to the power supply status of one or more power boards among the plurality of power boards, thereby connecting or limiting the DC power supply between each of the plurality of power boards and an adjacent power board or the supply board, wherein, when the power supply of one or more power boards among the plurality of power boards is interrupted, one or more circuit breakers connected to the power end of the interrupted power board become closed, thereby connecting one or more power ends on both sides of the power end of the interrupted power board to the power end of the interrupted power board, so that the DC power is supplied from one or more of the adjacent power boards and the supply board to the power board whose power supply is interrupted.

[0044] In one embodiment, the power supply terminals of the DC power supply input and output of the plurality of power supply boards may be respectively connected to the power supply terminals of two adjacent power supply boards, or respectively connected to the power supply terminals of an adjacent power supply board and the power supply terminal of the supply board.

[0045] In one embodiment, among the plurality of power boards, the power terminals of the power boards on one side can be connected to the power terminals of the power boards on the other side or the supply boards, so that the connection between the power terminals can be continuous.

[0046] In one embodiment, the connection between the power supply terminals of the plurality of power boards and the supply board may be continuous, so that the connection between the plurality of power boards and the supply board forms a loop structure.

[0047] In one embodiment, the connection between the plurality of power boards and the power terminals of the supply board may form a loop.

[0048] In one embodiment, the supply board may be disposed between any two power boards among the plurality of power boards.

[0049] In one embodiment, the power supply source that supplies power to the supply board may include at least the battery power source.

[0050] In one embodiment, the supply board may include more than one first power conversion device for further receiving power from the first AC power source and the second AC power source, and converting the power received from the more than one power supply source into the DC power source.

[0051] In one embodiment, the supply board may supply the DC power to a plurality of the power boards through any one of the one or more first power conversion devices according to the status of the one or more power supply sources.

[0052] In one embodiment, when the DC power source is connected between a plurality of the power boards or between a plurality of the power boards and the supply board, a plurality of the circuit breakers may become closed circuits, and when the DC power source is limited between a plurality of the power boards or between a plurality of the power boards and the supply board, a plurality of the circuit breakers may become open circuits.

[0053] In one embodiment, among the plurality of circuit breakers, when an abnormality occurs in a power board among the plurality of power boards connected to the supply board, the circuit breaker arranged between the abnormality-occurring power board and the supply board can become a closed circuit to connect the abnormality-occurring power board to the supply board, thereby allowing the DC power to be supplied from the supply board to the abnormality-occurring power board.

[0054] In one embodiment, among the plurality of circuit breakers, when an abnormality occurs in a power board that is not adjacent to the supply board among the plurality of power boards, the circuit breakers respectively arranged between the power board where the abnormality occurs, the power board adjacent to the supply board, and the supply board can be closed, so that the DC power is supplied from the adjacent power board to the power board where the abnormality occurs, and the DC power is supplied from the supply board to the adjacent power board.

[0055] In addition, another embodiment of the power supply system of the present invention using the above-mentioned technical features as a solution to the problem includes: a supply board that converts power received from one or more power supply sources into DC power, and is configured between any two power boards among a plurality of the power boards, so that when the supply board is connected to any one of the two power boards, the converted DC power is supplied to the connected power board; a bus line formed as a loop structure connected at one end to the other end, so as to be connected to the power supply end for inputting and outputting the DC power in each of the plurality of the power boards and the supply board, so as to connect the DC power converted by the plurality of the power boards and the supply board; and a plurality of circuit breakers, respectively configured on the bus line at each of the plurality of the power boards. One side of the power end of a power board and one side of the power end of the supply board are used to connect or disconnect each of the plurality of power boards with an adjacent power board or the supply board, and the plurality of circuit breakers change opening and closing according to the power supply status of more than one power board among the plurality of power boards, thereby connecting or limiting the DC power between the plurality of power boards or between the plurality of power boards and the supply board, wherein, when the power supply of more than one power board among the plurality of power boards is interrupted, more than one circuit breakers among the plurality of circuit breakers become closed, thereby connecting more than one power board among the plurality of power boards with the supply board, so that the DC power is supplied from the supply board to the power board whose power supply is interrupted.

[0056] In one embodiment, the plurality of power boards may include: a plurality of converters, which convert power received from each of the plurality of power supply sources into DC power; a plurality of inverters, which convert the DC power into a driving power for driving a plurality of loads, and supply the driving power to the plurality of loads; a circuit breaker, which is arranged between an output terminal to which the outputs of the plurality of converters are commonly connected and an external connection terminal connected to the output terminal to limit the connection between the output terminal and the connection terminal; and a control unit, which controls the opening and closing of the circuit breaker according to the state of the DC power or the driving power, thereby controlling the reception and supply of the DC power.

[0057] In one embodiment, the control unit may perform control to select any one of the plurality of converters according to the states of the plurality of power supply sources, so that the selected converter transmits the DC power to each of the plurality of inverters.

[0058] In one embodiment, when an abnormality occurs in any one or more of the converter transmitting the DC power to the plurality of inverters and the power supply source corresponding to the converter, the control unit can control other converters except the converter to transmit the DC power to the plurality of inverters.

[0059] In one embodiment, when two or more of the plurality of power supply sources are abnormal, the control unit may control the circuit breaker to be closed, so as to receive the DC power from other power supply devices.

[0060] In one embodiment, when an abnormality occurs in other power supply devices connected to the bus line, the control unit may control the circuit breaker to be closed, thereby supplying DC power to the other power supply devices.

[0061] In one embodiment, the output terminal of each of the plurality of power boards for outputting the DC power supply can be connected to the output terminals of two adjacent power boards respectively.

[0062] In one embodiment, among the plurality of power boards, the output end of the power board on one side can be connected to the output end of the power board on another side, so that the connection between the output ends can form a loop.

[0063] In one embodiment, the plurality of power boards can select any one of the plurality of converters for converting the DC power according to the status of the plurality of power supply sources, and transmit the DC power to each of the plurality of inverters for converting the driving power through the selected converter.

[0064] In one embodiment, when an abnormality occurs in a converter that is transmitting the DC power to a plurality of inverters that convert the driving power and in any one or more of the power supply sources corresponding to the converter, the plurality of power boards can transmit the DC power to the plurality of inverters through other converters except the converter.

[0065] In one embodiment, the output terminal of each of the plurality of power boards for outputting the DC power supply can be respectively connected to the output terminals of two adjacent power boards, or respectively connected to the output terminal of an adjacent power board and the output terminal of the supply board.

[0066] In one embodiment, the connection between the plurality of power boards and the output terminal of the supply board may form a loop.

[0067] In one embodiment, the supply board may be disposed between any two power boards among the plurality of power boards.

[0068] In one embodiment, when the DC power is supplied to a plurality of the power boards, the supply board can select any one of a plurality of converters for converting the DC power according to the states of a plurality of the power supply sources, and transmit the DC power to the plurality of the power boards through the selected converter.

[0069] In one embodiment, the circuit breakers may be normally open and closed when actuated to restrict connections between the power boards and between the power boards and the supply board.

[0070] In one embodiment, when an abnormality occurs in a power board among the plurality of power boards connected to the supply board, the control device can control to close the circuit breaker of the circuit connecting the abnormal power board and the supply board, so that the abnormal power board receives the DC power from the supply board.

[0071] In one embodiment, when an abnormality occurs in a power board among the plurality of power boards that is not adjacent to the supply board, the control device can control to close a circuit breaker arranged in a circuit between the power board where the abnormality occurs and the supply board, so that the power board where the abnormality occurs receives the DC power from the adjacent power board, and the adjacent power board receives the DC power from the supply board.

[0072] On the other hand, in order to solve the above problems, the solution of the power supply system of the present invention is to set a circuit breaker for limiting connection in a power bus connected to multiple power supply devices, and open and close the circuit breaker according to various situations occurring in the system to control the reception and supply of power.

[0073] That is, the technical feature of the power supply system of the present invention is to set circuit breakers corresponding to multiple power supply devices, and receive and supply power through a power bus by controlling the circuit breakers, thereby performing UPS functions between the multiple power supply devices.

[0074] The above technical features can be applied to and implemented in a power supply system, and this specification provides an embodiment of a power supply system having the above technical features.

[0075] An embodiment of the power supply system of the present invention with the above-mentioned technical features as a solution to the problem includes: a plurality of power boards, which convert power received from one or more power supply sources into DC power, and convert the converted DC power into a driving power of a load and supply it to the load; a supply board, which converts power received from one or more power supply sources into DC power, and supplies the converted DC power to the plurality of power boards when the supply board is connected to the plurality of power boards via a bus line; the bus line is connected to the power supply terminal of each of the plurality of power boards and the power supply terminal of the supply board, thereby connecting the DC power converted by the plurality of power boards and the supply board; and a plurality of circuit breakers, which are arranged between each of the power supply terminals and the bus line, thereby Connect or disconnect each of the power terminals with the bus line, and the plurality of circuit breakers change opening and closing according to the power supply status of at least one of the plurality of power boards, thereby connecting or limiting the DC power between the power terminals and the bus line, wherein, when the power supply of at least one of the plurality of power boards is interrupted, the circuit breakers connected to the other power boards except the power board whose power supply is interrupted and at least one of the supply boards and the power board whose power supply is interrupted become closed, thereby connecting the other power boards and at least one of the supply boards and the interrupted power board to the bus line, so that the DC power is connected from the other power boards and at least one of the supply boards to the power board whose power supply is interrupted through the bus line.

[0076] In one embodiment, one or more of the 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 in which DC power is stored, so that 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.

[0077] In one embodiment, after the power supply is interrupted, the stored power of the battery power source may be supplied to the plurality of power strips uninterruptedly until the power supply is switched and restored.

[0078] In one embodiment, one or more of the 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.

[0079] In one embodiment, each of the plurality of power boards may include: one or more first power conversion devices, converting the power received from one or more of the power supply sources into the DC power; and a second power conversion device, converting the DC power received from one or more of the first power conversion devices into the driving power and supplying it to the load.

[0080] In one embodiment, the plurality of power boards may supply the DC power to the second power conversion device through any one of the one or more first power conversion devices according to the state of the one or more power supply sources.

[0081] In one embodiment, when power supply from a conversion device that supplies the DC power to the second power conversion device is interrupted, the plurality of power boards may supply the DC power to the second power conversion device through other conversion devices other than the conversion device.

[0082] In one embodiment, during the period when the conversion device is switched to the other conversion device, one or more of the first power conversion devices may supply the DC power to the second power conversion device via the conversion device receiving power from the battery power source.

[0083] In one embodiment, the power supply source that supplies power to the supply board may include at least the battery power source.

[0084] In one embodiment, the supply board may include more than one first power conversion device for further receiving power from the first AC power source and the second AC power source, and converting the power received from the more than one power supply source into the DC power source.

[0085] In one embodiment, the supply board may supply the DC power to a plurality of the power boards through any one of the one or more first power conversion devices according to the status of the one or more power supply sources.

[0086] In one embodiment, the supply boards may be formed in plurality, wherein a supply object to which the DC power is to be supplied in a plurality of the power boards may be pre-specified for each of the plurality of supply boards, thereby supplying the DC power to the pre-specified supply objects.

[0087] In one embodiment, the supply board may be disposed at a position spaced within a prescribed distance from each of the plurality of power boards.

[0088] In one embodiment, when the DC power source is connected between the power source terminal and the bus line, the plurality of circuit breakers may become closed circuit, and when the DC power source is limited between the power source terminal and the bus line, the plurality of circuit breakers may become open circuit.

[0089] In one embodiment, among the plurality of circuit breakers, when the power supply to more than one of the plurality of power boards is interrupted, the circuit breaker connected to the power board whose power supply is interrupted and the circuit breaker connected to the supply board can become closed so that the interrupted power board and the supply board are connected to the bus line, thereby allowing the DC power to be supplied from the supply board to the interrupted power board.

[0090] In one embodiment, after the power supply is interrupted, the interrupted power board may be supplied with the DC power from a conversion device connected to the battery power until the turned-on DC power is supplied from the supply board.

[0091] In one embodiment, among the plurality of circuit breakers, the circuit breakers connected to one or more power boards among the other power boards and the circuit breaker connected to the supply board can become closed, so that the DC power is supplied from the one or more power boards and the supply board among the other power boards to the interrupted power board through the bus line.

[0092] In one embodiment, a control device may also be included for monitoring the status of at least one of the plurality of power boards, the supply boards and the plurality of circuit breakers, and controlling at least one of the plurality of power boards, the supply boards and the plurality of circuit breakers according to the monitoring results.

[0093] In addition, another embodiment of the power supply system of the present invention using the above-mentioned technical features as a solution to the problem includes: a plurality of power boards, which convert the power received from each of the one or more power supply sources into a DC power supply, convert the DC power supply into a driving power supply for driving a load, and supply the driving power supply to the load; a supply board, which converts the power received from each of the one or more power supply sources into the DC power supply according to the state of the plurality of power boards, thereby supplying the DC power to the plurality of power boards; a bus line, which is connected to the plurality of power boards The power supply terminals for inputting and outputting the DC power supply in each of the supply boards are commonly connected, so that the DC power converted by the plurality of power boards and the supply boards is transmitted to the bus line; a plurality of circuit breakers are arranged in the circuit where each of the power supply terminals is connected to the bus line, thereby limiting the connection of each of the plurality of power boards and the supply boards to the bus line; and a control device controls the opening and closing of the plurality of circuit breakers according to the state of each of the plurality of power boards, thereby controlling the reception and supply of the DC power by each of the plurality of power boards.

[0094] In one embodiment, the plurality of power boards may include: one or more first power conversion devices, which convert power received from each of the one or more power supply sources into DC power; a second power conversion device, which converts the DC power into a driving power for driving a load, and supplies the driving power to the load; a circuit breaker, which is arranged between a power terminal commonly connected to the output terminal of the one or more first power conversion devices and the input terminal of the second power conversion device and a bus line connected to the power terminal, so as to limit the connection between the power terminal and the bus line; and a control unit, which controls the opening and closing of the circuit breaker according to the state of the DC power supply or the driving power supply, thereby controlling the reception and supply of the DC power through the bus line.

[0095] In one embodiment, the control unit may control to select any one of the one or more first power conversion devices according to the status of the one or more power supply sources, so that the DC power is transmitted to each of the second power conversion devices by the selected conversion device.

[0096] In one embodiment, when an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device and the power supply source corresponding to the conversion device, the control unit can control other converters except the conversion device to transmit the DC power to the second power conversion device.

[0097] In one embodiment, when two or more of the one or more power supply sources are abnormal, the control unit can control to close the circuit breaker, thereby receiving the DC power from other power supply devices connected to the bus line through the bus line.

[0098] In one embodiment, when an abnormality occurs in other power supply devices connected to the bus line, the control unit may control to close the circuit breaker, thereby supplying DC power to the other power supply devices through the bus line.

[0099] In one embodiment, the one or more power supply sources may include a first alternating current power source and a second alternating current power source for supplying AC power, and a battery power source for storing DC power.

[0100] In one embodiment, one or more of the power supply sources may further include an emergency power supply, and when an abnormality occurs in the first AC power supply, the second AC power supply, and the battery power supply, the emergency power supply supplies emergency generated power to the load.

[0101] In one embodiment, the circuit breaker may be normally open and closed when actuated to restrict the connection between the switching device and the bus line.

[0102] In one embodiment, a plurality of the power boards can select any one of the more than one first power conversion devices for converting the DC power supply according to the status of more than one power supply source, and transmit the DC power to each of the second power conversion devices for converting the driving power supply through the selected converter.

[0103] In one embodiment, when an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device that converts the driving power and the power supply source corresponding to the conversion device, the plurality of power boards can transmit the DC power to the second power conversion device through other conversion devices other than the conversion device.

[0104] In one embodiment, when an abnormality occurs in any one or more of the plurality of power boards, the control device can control to close the circuit breakers of the abnormal power board and the supply board, so that the abnormal power board receives the DC power from the supply board through the bus line.

[0105] In one embodiment, when the DC power is supplied to the abnormal power supply board, the supply board can select any one of more than one first power conversion devices for converting the DC power according to the status of more than one power supply source, and transmit the DC power to the bus line through the selected conversion device.

[0106] In one embodiment, when an abnormality occurs in the supply board, the control device can control to close the circuit breaker of the power board closest to the abnormality-occurring power board, so that the abnormality-occurring power board receives the DC power from the adjacent power board through the bus line.

[0107] In one embodiment, when there are multiple abnormal power boards, the control device can control to close one or more circuit breakers in the supply board and the power board closest to the abnormal power board according to the abnormal state of each abnormal power board, so that each abnormal power board receives the DC power from one or more of the supply board and the adjacent power boards through the bus line.

[0108] In one embodiment, the supply boards may be formed in plurality, wherein a supply object to which the DC power is to be supplied in a plurality of the power boards may be pre-specified for each of the plurality of supply boards, thereby supplying the DC power to the pre-specified supply objects.

[0109] In one embodiment, the supply board may be disposed at a position spaced within a prescribed distance from each of the plurality of power boards.

[0110] The power supply system of the present invention described above can be applied to and implemented in a power supply device that supplies / uses a DC power supply, a power supply system, and an operating method of the power supply system. In particular, it can be usefully applied to and implemented in 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 be applied to and implemented in 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 operating methods of energy storage systems, motor control panels for controlling multiple motor loads, motor control systems, and motor operation systems, etc., to which the technical ideas of the above-mentioned technology can be applied.

[0111] Effects of the Invention

[0112] In the power supply system of the present invention, the circuit breaker of each of the plurality of power supply devices connected to each other is controlled to control the reception and supply of power, thereby having the effect of being able to perform UPS function between the plurality of power supply devices.

[0113] In addition, in the power supply system of the present invention, the circuit breaker of each of the multiple power supply devices connected to the power bus is controlled to control the reception and supply of power through the power bus, thereby having the effect of being able to perform UPS functions between the multiple power supply devices.

[0114] In addition, in the power supply system of the present invention, the circuit breaker of each of a plurality of power supply devices connected to each other is controlled according to the situation that occurs to control the reception and supply of power, or the circuit breaker of each of a plurality of power supply devices connected to a power bus is controlled according to the situation that occurs to control the reception and supply of power through the power bus, thereby having the effect of being able to achieve efficient operation with a minimum of units.

[0115] Therefore, there is an effect that power supply to the load can be maintained without interruption even when various abnormal situations occur in the system.

[0116] That is, the power supply system of the present invention has the effect of being able to appropriately and stably cope with power supply in response to various abnormal situations occurring in the system.

[0117] Furthermore, the power supply system of the present invention has the effect of being able to increase the stability, reliability and availability of large-capacity system operations.

[0118] As a result, the power supply system of the present invention solves the above-mentioned problems, thereby having an effect of being able to improve the limitations of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0119] Figure 1 The present invention is a power supply system according to an embodiment of the present invention. Figure 1 .

[0120] Figure 2 This is a structural diagram showing the structure of a power board according to an embodiment of the power supply system of the present invention.

[0121] Figure 3 This is a structural diagram showing the specific structure of a power board according to an embodiment of the power supply system of the present invention.

[0122] Figure 4a and 4b An example of a connection structure of a power board showing an embodiment of a power supply system of the present invention Figure 1 and examples Figure 2 .

[0123] Figure 5 The present invention is a power supply system according to an embodiment of the present invention. Figure 2 .

[0124] Figure 6 This is an example showing a specific example of an embodiment of the power supply system of the present invention. Figure 1 .

[0125] Figure 7 This is an example showing a specific example of an embodiment of the power supply system of the present invention. Figure 2 .

[0126] Figure 8 This is an example showing a specific example of an embodiment of the power supply system of the present invention. Figure 3 .

[0127] Fig. 9 FIG. 4 is an exemplary diagram showing a specific example of an embodiment of the power supply system of the present invention.

[0128] Fig.10 It is a structural diagram showing the structure of another embodiment of the power supply system of the present invention.

[0129] Fig.11 This is a structural diagram showing the structure of a power board according to another embodiment of the power supply system of the present invention.

[0130] Fig.12 It is a structural diagram showing the specific structure of a power board according to another embodiment of the power supply system of the present invention.

[0131] Fig.13 is an example showing a specific example of another embodiment of the power supply system of the present invention Figure 1 .

[0132] Fig.14 is an example showing a specific example of another embodiment of the power supply system of the present invention Figure 2 .

[0133] Fig.15 is an example showing a specific example of another embodiment of the power supply system of the present invention Figure 3 .

[0134] Fig.16 FIG. 4 is an exemplary diagram showing a specific example of another embodiment of the power supply system of the present invention. DETAILED DESCRIPTION

[0135] 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 otherwise defined in this specification, the technical terms used in this specification should be interpreted in the sense that is generally understood by a person of ordinary skill in the field to which the technology disclosed in this specification belongs, and should not be interpreted as an overly comprehensive or oversimplified meaning. In addition, when the technical terms used in this specification are incorrect technical terms that cannot correctly express the technical ideas disclosed in this specification, they should be replaced with 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 definition in the dictionary or the context before and after, and should not be interpreted as an oversimplified meaning.

[0136] 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 steps recorded in the specification, but should be interpreted as possibly excluding some of the constituent elements or steps, or possibly including other constituent elements or steps.

[0137] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are given the same reference numerals regardless of the reference numerals, and repeated description thereof will be omitted.

[0138] In addition, when describing the technology disclosed in this specification, if it is determined that the specific description of the related known technology may confuse the gist of the technology disclosed in this specification, its detailed description will be omitted. In addition, it should be noted that the drawings are only for easy understanding of the technical ideas disclosed in this specification, and should not be interpreted as limiting its technical ideas through the drawings.

[0139] Hereinafter, an embodiment of the power supply system of the present invention will be described.

[0140] The power supply system may be implemented in a combination or separation of the following embodiments.

[0141] The power supply system may be a power supply system including a plurality of power supply devices.

[0142] The power supply system may be a system including a plurality of packaged power devices to supply power.

[0143] Here, the power supply device may be a power board encapsulating a plurality of power supply control devices.

[0144] like Figure 1As shown, the power supply system 1000 (hereinafter referred to as the system) includes: a plurality of power boards 100, 200, 300 and 400, which convert the power received from one or more power supply sources 10 into DC power, and convert the DC power into a driving power of a load 20 and supply it to the load 20; a DC circuit, one end of which is connected to the other end to connect to each power terminal, and connect the DC power converted by the plurality of the power boards 100, 200, 300 and 400, wherein the DC power in each of the plurality of the power boards 100, 200, 300 and 400 is input and output through the power terminal; and a plurality of circuit breakers 130, 230, 330 and 430, which are respectively arranged between the power terminals on the DC circuit to connect or disconnect two power terminals connected to the circuit where the plurality of circuit breakers 130, 230, 330 and 430 are located.

[0145] In the system 1000, the plurality of circuit breakers 130, 230, 330 and 430 change opening and closing according to the operating status of one or more of the plurality of power boards 130, 230, 330 and 430, thereby connecting or limiting the DC power between the plurality of power boards 130, 230, 330 and 430.

[0146] In the system 1000, when the power supply of one or more of the power strips 100, 200, 300 and 400 is interrupted, one or more of the circuit breakers 130, 230, 330 and 430 connected to the power end of the power strip to which the power supply is interrupted becomes closed, thereby connecting one or more of the power ends on both sides of the power end of the interrupted power strip to the power end of the interrupted power strip.

[0147] That is, in the system 1000, each of the plurality of power strips 100, 200, 300 and 400 can be connected to the power terminals of two power strips through the DC circuit, so that when the power supply is interrupted, the DC power can be received from more than one of the two power strips.

[0148] In addition, in the system 1000, when the power supply to one or more of the power strips 100, 200, 300 and 400 is interrupted, one or more of the circuit breakers 130, 230, 330 and 430 becomes closed, thereby connecting one or more of the power strips 100, 200, 300 and 400 so that the DC power is supplied to the power strip to which the power supply is interrupted.

[0149] Here, each of the plurality of power strips 100, 200, 300 and 400 may be as follows: Figure 2 and Figure 3 The power supply device 100 is shown.

[0150] That is, the plurality of power boards 100, 200, 300 and 400 may be formed as follows. Figure 2 and Figure 3 The power supply device shown in FIG. 1 is composed of a power supply device, and the power supply system 1000 may include a plurality of Figure 2 and Figure 3 The power supply device 100 shown is in the form of a power strip, and thus may include a plurality of the power strips 100 , 200 , 300 and 400 .

[0151] The plurality of power boards 100 , 200 , 300 , and 400 may be modules including a plurality of power control devices.

[0152] The plurality of power boards 100 , 200 , 300 , and 400 may be power devices encapsulating a plurality of the power control devices.

[0153] Here, each of the plurality of power strips 100, 200, 300 and 400 may be as follows: Figure 2 and Figure 3 The power supply device 100 is shown.

[0154] That is, the plurality of power boards 100, 200, 300 and 400 may be formed as follows. Figure 2 and Figure 3 The power supply device shown in FIG. 1 is composed of a power supply device, and the power supply system 1000 may include a plurality of Figure 2 and Figure 3 The power supply device 100 shown is in the form of a power strip, and thus may include a plurality of the power strips 100 , 200 , 300 and 400 .

[0155] The plurality of power boards 100 , 200 , 300 , and 400 may be modules including a plurality of power control devices.

[0156] The plurality of power boards 100 , 200 , 300 , and 400 may be power devices encapsulating a plurality of the power control devices.

[0157] For example, it may be a power board encapsulating a plurality of the power control devices.

[0158] The plurality of power boards 100 , 200 , 300 and 400 may be packaged power boards installed in buildings requiring high power, such as power plants, workshops, factories, buildings, apartments, etc., to supply power.

[0159] The plurality of power boards 100 , 200 , 300 and 400 may also be packaged power boards disposed in any one space.

[0160] A plurality of the power control devices may be packaged in the plurality of the power boards 100 , 200 , 300 , and 400 to supply power to a load.

[0161] like Figure 2 As shown, the plurality of power boards 100, 200, 300 and 400 may include: one or more first power conversion devices 110, converting the power received from each of the one or more power supply sources 10 into the DC power; and one or more second power conversion devices 120, converting the DC power into the driving power for driving the load 20, and supplying the driving power to the load 20.

[0162] As described above, the plurality of power boards 100, 200, 300 and 400 include one or more of the first power conversion devices 110 and the second power conversion devices 120, thereby converting the power received from one or more of the power supply sources 10 into the driving power and supplying the driving power to the load 20.

[0163] The specific structure of the plurality of power boards 100, 200, 300 and 400 including at least one of the first power conversion device 110 and the second power conversion device 120 can be as follows: Figure 2 and Figure 3 shown.

[0164] The one or more power supply sources 10 that supply power to the plurality of power boards 100 , 200 , 300 , and 400 may be externally connected to the one or more first power conversion devices 110 and supply power to each of the one or more first power conversion devices 110 .

[0165] Each of the one or more power supply sources 10 may be connected to each of the one or more first power conversion devices 110 , and supply DC or AC power to each of the one or more first power conversion devices 110 .

[0166] like Figure 2 and Figure 3 As shown, the one or more 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 power source 10 # 2 for storing DC power.

[0167] 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.

[0168] That is, as shown in FIG. 4 , the one or more power supply sources 10 may include a system power G, a bypass power P, and a battery power B.

[0169] Therefore, each of the plurality of power boards 100 , 200 , 300 , and 400 may receive power from each of the system power G, the bypass power P, and the battery power B.

[0170] The first AC power source 10#1 may be a system power source G.

[0171] The first AC power source 10#1 may be a system power source G that supplies 440V AC power.

[0172] The second AC power source 10#3 may be a bypass power source P.

[0173] The second AC power source 10#3 may be a bypass power source P that supplies 440V AC power.

[0174] The battery power source 10#2 may be an emergency battery that stores DC power so as to supply the stored DC power in an emergency.

[0175] When an abnormality occurs in the first AC power source and the second AC power source, the battery power source 10 # 2 may supply the stored DC power to the plurality of power boards 100 , 200 , 300 , and 400 .

[0176] The DC power supply can be stored in the battery power supply B, so that 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 and 400 during the period when the power supply is switched and restored.

[0177] After the power supply is interrupted, the stored power of the battery power source B may be uninterruptedly supplied to the plurality of power strips 100, 200, 300, and 400 until the power supply is switched and restored.

[0178] One or more of the power supply sources 10 may also include an emergency power supply A, which supplies emergency generated power to the load 20 when the power supply of the first AC power supply G, the second AC power supply P and the battery power supply B is interrupted.

[0179] When an abnormality occurs in the first AC power source G, the second AC power source P, and the battery power source B, the emergency power source A can supply emergency generated power to the load 20 .

[0180] The emergency power supply A can be an emergency power supply for each of the loads 20 to maintain the driving of the loads 20 within a specified time when 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 multiple power boards 100, 200, 300 and 400 all malfunction and fail to supply power.

[0181] For example, the emergency power supply A may be a power supply including an emergency generator.

[0182] Preferably, each of the plurality of power strips 100, 200, 300 and 400 can receive power from three power supply sources 10, i.e., the system power supply G, the bypass power supply P and the battery power supply B, as shown in FIG. 4, 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 are unable to supply power.

[0183] Here, each of the more than one power supply sources 10 that supplies power to each of the plurality of power strips 100, 200, 300 and 400 can supply power to each of the plurality of power strips 100, 200, 300 and 400 in one system, or can supply power to each of the plurality of power strips 100, 200, 300 and 400 in each separate distribution board through a separate distribution board.

[0184] Each of the plurality of power boards 100, 200, 300 and 400 may include: one or more of the first power conversion devices 110, 210, 310 and 410, which convert the power received from one or more of the power supply sources 10 into the DC power; and the second power conversion devices 120, 220, 320 and 420, which convert the DC power received from one or more of the first power conversion devices 110, 210, 310 and 410 into the driving power and supply it to the load 20.

[0185] Here, more than one of the first power conversion devices 110 , 210 , 310 , and 410 and the second power conversion devices 120 , 220 , 320 , and 420 may be formed in plural.

[0186] Each of the plurality of power boards 100, 200, 300 and 400 can supply the DC power to one or more of the second power conversion devices 12, 220, 320 and 420 through any one of the first power conversion devices 110, 210, 310 and 410 according to the state of one or more of the power supply sources 10.

[0187] The first power conversion devices 110 , 210 , 310 and 410 are devices that convert received power into DC power, and may be converters, for example.

[0188] The first power conversion devices 110 , 210 , 310 , and 410 may be AC / DC converters that convert AC power into DC power, or may be DC / DC converters that convert DC power into DC power.

[0189] One or more of the first power conversion devices 110 , 210 , 310 , and 410 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.

[0190] The one or more first power conversion devices 110 , 210 , 310 and 410 may correspond to each of the one or more power supply sources 10 and include three conversion devices 110 # 1 to # 3 , 210 # 1 to # 3 , 310 # 1 to # 3 and 410 # 1 to # 3 .

[0191] One or more of the first power conversion devices 110, 210, 310 and 410 may include first to third conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3, and the first to third conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 are connected to each of the first AC power source 10#1, the battery power source 10#2 and the second AC power source 10#3, and receive power from the connected power supply source.

[0192] Accordingly, the first AC power supply 10#1 can be connected to the first conversion devices 110#1, 210#1, 310#1 and 410#1, and supply AC power to the first conversion devices 110#1, 210#1, 310#1 and 410#1, the battery power supply 10#2 can be connected to the second conversion devices 110#2, 210#2, 310#2 and 410#2, and supply DC power to the second conversion devices 110#2, 210#2, 310#2 and 410#2, and the second AC power supply 10#3 can be connected to the third conversion devices 110#3, 210#3, 310#3 and 410#3, and supply AC power to the third conversion devices 110#3, 210#3, 310#3 and 410#3.

[0193] The first conversion devices 110#1, 210#1, 310#1 and 410#1 can be AC / DC converters that convert AC power into DC power, the second conversion devices 110#2, 210#2, 310#2 and 410#2 can be DC / DC converters that convert the level of DC power, and the third conversion devices 110#3, 210#3, 310#3 and 410#3 can be AC / DC converters that convert AC power into DC power.

[0194] Each of the one or more first power conversion devices 110 , 210 , 310 , and 410 may include a switching unit for switching the connection at the front end and the rear end, respectively.

[0195] The switching unit may be provided at each of the input and output ends of each of the one or more first power conversion devices 110 , 210 , 310 and 410 to limit the switching of the power input and output in the one or more first power conversion devices 110 , 210 , 310 and 410 .

[0196] Here, the switching unit provided at the input terminal may be a circuit breaker that senses an overcurrent and cuts off a circuit.

[0197] 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, 210#1, 310#1 and 410#1 that receive AC power from the first AC power source 10#1 and the second AC power source 10#3, and the third conversion device 110#3, 210#3, 310#3 and 410#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, 210#2, 310#2 and 410#2 that receive DC power from the battery power source 10#2.

[0198] The switching unit may switch on and off the connection of one or more of the first power conversion devices 110 , 210 , 310 , and 410 according to the operation of one or more of the first power conversion devices 110 , 210 , 310 , and 410 .

[0199] For example, when power is not received from one or more of the 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.

[0200] The output terminals of more than one of the first power conversion devices 110 , 210 , 310 and 410 may be connected to a power terminal.

[0201] That is, the output ends of more than one of the first power conversion devices 110, 210, 310 and 410 can be commonly connected to the power supply end, so that the DC power converted by more than one of the first power conversion devices 110, 210, 310 and 410 flows through the power supply end.

[0202] Therefore, the power supply end may be commonly connected to the output end of more than one of the first power conversion devices 110 , 210 , 310 and 410 , so that the DC power output from more than one of the first power conversion devices 110 , 210 , 310 and 410 flows through the circuit.

[0203] The power terminal may be connected to a power terminal of an adjacent power board among the plurality of the power boards 100 , 200 , 300 , and 400 and an input terminal of the second power conversion device 120 , 220 , 320 , and 420 .

[0204] The power terminal may be connected to power terminals of two adjacent power boards among the other power boards 100 , 200 , 300 , or 400 .

[0205] The power supply end can be connected to the power supply ends of two adjacent power supply boards among the other power supply boards 100, 200, 300 or 400 and the input end of each of the second power conversion devices 120, 220, 320 and 420, so that the DC power supply is transmitted to the adjacent power supply boards or to the second power conversion devices 120, 220, 320 and 420 through the power supply end.

[0206] The power terminal may be connected to any two of the circuit breakers 130 , 230 , 330 , and 430 .

[0207] That is, the connection with the other power strips 100, 200, 300 or 400 may be limited by any two circuit breakers connected to the power terminals.

[0208] Thus, the DC power transmitted from the power terminal to the other power boards 100, 200, 300 or 400 or transmitted from the other power boards 100, 200, 300 or 400 to the power terminal can be controlled by a circuit breaker connected to the power terminal.

[0209] As described above, the power supply end commonly connected to the output end of more than one of the first power conversion devices 110, 210, 310 and 410 can be connected to the power supply end of the adjacent power board and the input end of the second power conversion device 120, 220, 320 and 420, so that the DC power converted and output by more than one of the first power conversion devices 110, 210, 310 and 410 can be transmitted through the power supply end.

[0210] The DC power converted and output by one or more of the first power conversion devices 110 , 210 , 310 , and 410 may be transmitted to the second power conversion devices 120 , 220 , 320 , and 420 .

[0211] More than one of the first power conversion devices 110, 210, 310 and 410 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through any one action of the first to third conversion devices 110#1 to 110#3, 210#1 to 210#3, 310#1 to 310#3 and 410#1 to 410#3.

[0212] When the power supply of conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 that supply the DC power to the second power conversion devices 120, 220, 320 and 420 is interrupted, the plurality of power boards 100, 200, 300 and 400 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through other conversion devices except the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3.

[0213] When the power supply of conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 that supply the DC power to the second power conversion devices 120, 220, 320 and 420 is interrupted, during the period when the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 are switched to the other conversion devices, one or more of the first power conversion devices 110, 210, 310 and 410 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through conversion devices 110#2, 210#2, 310#2 and 410#2 that receive power from the battery power supply 10#2.

[0214] Here, the situation in which the power supply of the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 is interrupted may be a situation in which an abnormal condition is detected in any one or more of the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3, the supply source connected to the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3, and the rated value of the DC power supply.

[0215] For example, in the process of the first conversion devices 110#1, 210#1, 310#1 and 410#1 connected to the first AC power supply 10#1 supplying the DC power to the second power conversion devices 120, 220, 320 and 420, when the rated value of the DC power output from the first conversion devices 110#1, 210#1, 310#1 and 410#1 decreases below the prescribed standard, the third conversion devices 110#3, 210#3, 310#3 and 410#3, which are other conversion devices other than the first conversion devices 110#1, 210#1, 310#1 and 410#1, can supply the DC power to the second power conversion device 120.

[0216] In this case, while the first conversion devices 110#1, 210#1, 310#1 and 410#1 are switched to the third conversion devices 110#3, 210#3, 310#3 and 410#3, more than one of the first power conversion devices 110, 210, 310 and 410 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through the second conversion devices 110#2, 210#2, 310#2 and 410#2 connected to the battery power supply 10#2.

[0217] That is, when the supply of the DC power to the second power conversion devices 120, 220, 320 and 420 is interrupted, the second conversion devices 110#2, 210#2, 310#2 and 410#2 connected to the battery power supply 10#2 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 until the supply of the DC power is switched and restored.

[0218] The second power conversion devices 120 , 220 , 320 , and 420 may be formed in plural.

[0219] The second power conversion device 120 , 220 , 320 and 420 is a device for converting the received DC power into the driving power, and may be an inverter, for example.

[0220] When the load is a load driven by an AC power source, the second power conversion device 120 , 220 , 320 , and 420 may be an inverter that converts a DC power source received from one or more of the first power conversion devices 110 , 210 , 310 , and 410 into an AC driving power source.

[0221] When the load is a load driven by a DC power source, the second power conversion device 120 , 220 , 320 , and 420 may be an inverter that converts the DC power received from one or more of the first power conversion devices 110 , 210 , 310 , and 410 into a DC driving power source.

[0222] The second power conversion devices 120 , 220 , 320 , and 420 may be provided in a number corresponding to the loads 20 .

[0223] The load 20 may be formed in plural.

[0224] The second power conversion devices 120 , 220 , 320 , and 420 may include three or more second power conversion devices 120 # 1 to # 3 , 220 # 1 to # 3 , 320 # 1 to # 3 , and 420 # 1 to # 3 corresponding to the load 20 .

[0225] Each of the second power conversion devices 120 , 220 , 320 , and 420 may be connected to each of the loads 20 and supply the driving power to the connected loads.

[0226] Each of the second power conversion devices 120 , 220 , 320 , and 420 may include a switching unit for switching the connection at a front end.

[0227] The opening and closing unit may be a switch provided at an input terminal of each of the second power conversion devices 120 , 220 , 320 , and 420 to limit power input to the second power conversion devices 120 , 220 , 320 , and 420 .

[0228] Here, the switching unit provided at the input terminal may be a circuit breaker that senses an overcurrent and cuts off a circuit.

[0229] The driving power converted and output by the second power conversion devices 120 , 220 , 320 , and 420 may be transmitted to each of the loads 20 .

[0230] Here, the load 20 may include a motor M load.

[0231] The power terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to each of the power terminals of two adjacent power boards, wherein the DC power is input and output through the power terminals.

[0232] A plurality of the power boards 100, 200, 300 and 400 can be connected to the DC circuit, and the DC circuit is formed into a loop structure with one end connected to the other end, so as to be connected to the power supply end for inputting and outputting the DC power supply in each of the plurality of the power boards 100, 200, 300 and 400, thereby connecting the DC power converted by the plurality of the power boards 100, 200, 300 and 400.

[0233] The DC circuit may be a DC dedicated circuit connected to the plurality of power boards 100 , 200 , 300 , and 400 outside the plurality of power boards 100 , 200 , 300 , and 400 so that DC power converted by the plurality of power boards 100 , 200 , 300 , and 400 flows through.

[0234] The DC circuit may refer to a DC dedicated circuit commonly connected to two or more power supply sources to transmit power.

[0235] The DC circuit may be a circuit continuously connected by a circuit connecting two of the power supply terminals.

[0236] The DC circuit may be formed by connecting a plurality of circuits.

[0237] The DC circuit may be formed of a plurality of circuits connected in a ring structure.

[0238] The DC circuit can transmit DC power between power terminals connected to both sides.

[0239] That is, the DC circuit may be a circuit including a plurality of the circuits connected in a loop structure.

[0240] Therefore, the power supply terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 connected to the DC circuit may form an outer loop outside the plurality of power boards 100 , 200 , 300 , and 400 .

[0241] The DC circuit may be connected to a plurality of DC power supply sources so that DC power supplied from the plurality of DC power supply sources may be transmitted to the DC circuit.

[0242] For example, the power supply terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected, so that the DC power may be transmitted between the plurality of power boards 100 , 200 , 300 , and 400 .

[0243] Preferably, the DC circuit may have a rating ranging from a size of DC power supplied from one conversion device to a size of DC power supplied from two conversion devices.

[0244] That is, the rating of the DC circuit may be a rating that can transmit the DC power supplied from the two conversion devices.

[0245] The DC circuit may flow the DC power according to opening and closing of the plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0246] The DC circuit may connect the DC power source according to the opening and closing actions of the plurality of circuit breakers 130 , 230 , 330 , and 430 .

[0247] In the DC circuit, the DC circuit flowing through the DC power source may be formed in a loop form.

[0248] That is, the power end of each of the plurality of power strips 100, 200, 300 and 400 can be connected to the DC circuit formed in the form of the loop, so that the power end of each of the plurality of power strips 100, 200, 300 and 400 can be connected in a ring structure.

[0249] Therefore, in the system 1000 , the connections between the plurality of the power strips 100 , 200 , 300 , and 400 may be formed as a ring structure outside the plurality of the power strips 100 , 200 , 300 , and 400 .

[0250] The DC circuit may be formed by connecting the power terminals O1 to O4 of any one of the plurality of power boards 100 , 200 , 300 and 400 to each of the power terminals O1 to O4 of two adjacent power boards.

[0251] For example, it can be composed of a first circuit connecting the first power board 100 and the third power board 100, a second circuit connecting the first power board 100 and the second power board 200, a third circuit connecting the third power board 300 and the fourth power board 400, and a fourth circuit connecting the second power board 200 and the fourth power board 400, and the first to fourth circuits can be formed in a loop form.

[0252] Here, the first circuit breaker 130 may be provided in the first circuit, the second circuit breaker 230 may be provided in the second circuit, the third circuit breaker 330 may be provided in the third circuit, and the fourth circuit breaker 430 may be provided in the fourth circuit, so as to limit the opening and closing of the first to fourth circuits respectively.

[0253] Therefore, the plurality of circuit breakers 130, 230, 330, and 430 may limit the connection between the plurality of power boards 100, 200, 300, and 400 through the DC circuit formed by the plurality of circuits in a loop form.

[0254] In the plurality of power boards 100, 200, 300 and 400, the power terminal of the power board on one side of the DC circuit can be connected to the power terminal of the power board on the other side, so that the connection between the power terminals can form a loop.

[0255] In the plurality of power boards 100, 200, 300 and 400, the plurality of circuit breakers 130, 230, 330 and 430 may be respectively arranged between the power supply terminal of any power board and the respective power supply terminals of two adjacent power boards.

[0256] A power terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to the plurality of circuit breakers 130 , 230 , 330 , and 430 .

[0257] The power terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to any two of the plurality of circuit breakers 130 , 230 , 330 , and 430 .

[0258] That is, the power supply terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to two circuit breakers 130 , 230 , 330 , and 430 .

[0259] For example, when the plurality of power boards 100, 200, 300 and 400 are Figure 1 When there are four as shown, the first power board 100 can be connected to the first circuit breaker 130 and the second circuit breaker 230, the second power board 200 can be connected to the second circuit breaker 230 and the third circuit breaker 330, the third power board 300 can be connected to the third circuit breaker 330 and the fourth circuit breaker 430, and the fourth power board 400 can be connected to the fourth circuit breaker 430 and the first circuit breaker 130.

[0260] Therefore, each of the plurality of circuit breakers 130, 230, 330, and 430 may be connected to two power boards.

[0261] For example, the first circuit breaker 130 can be connected to the first power board 100 and the fourth power board 400, the second circuit breaker 230 can be connected to the first power board 100 and the second power board 200, the third circuit breaker 330 can be connected to the second power board 200 and the third power board 300, and the fourth circuit breaker 430 can be connected to the fourth power board 400 and the first power board 100.

[0262] In the plurality of power boards 100 , 200 , 300 and 400 , the power terminal of any one power board can be connected to each of the power terminals of the other two power boards.

[0263] That is, a plurality of the power strips 100, 200, 300, and 400 may be connected to each of the other two power strips.

[0264] For example, the first power strip 100 may be connected to the fourth power strip 400 through the first circuit breaker 130 and to the second power strip 200 through the second circuit breaker 230 , thereby being connected to each of the second and fourth power strips 200 and 400 .

[0265] In addition, the second power strip 200 may be connected to the first power strip 100 through the second circuit breaker 230 and to the third power strip 300 through the third circuit breaker 330 , thereby being connected to each of the first and third power strips 100 and 300 .

[0266] In addition, the third power strip 300 may be connected to the second power strip 200 through the third circuit breaker 330 and to the fourth power strip 400 through the fourth circuit breaker 430 , thereby being connected to each of the second and fourth power strips 200 and 400 .

[0267] In addition, the fourth power strip 400 may be connected to the third power strip 300 through the fourth circuit breaker 430 and to the first power strip 100 through the first circuit breaker 130 , thereby being connected to each of the first and third power strips 100 and 300 .

[0268] Each of the plurality of circuit breakers 130 , 230 , 330 , and 430 may be included in each of the plurality of power strips 100 , 200 , 300 , and 400 .

[0269] The plurality of circuit breakers 130 , 230 , 330 , and 430 connected to the power terminal may be DC circuit breakers for cutting off a DC power source.

[0270] Each of the power supply terminals may be connected to any two of the plurality of circuit breakers 130 , 230 , 330 , and 430 .

[0271] The plurality of circuit breakers 130 , 230 , 330 , and 430 may be disposed in a circuit between power terminals of every two adjacent power boards among the power terminals, thereby limiting the connection between the plurality of power boards 100 , 200 , 300 , and 400 .

[0272] The plurality of circuit breakers 130, 230, 330 and 430 may be configured in a circuit connecting each two adjacent power supply terminals connected to the output terminal of each of the first power conversion devices 110, 210, 310 and 410 of at least one of the plurality of power boards 100, 200, 300 and 400.

[0273] That is, the plurality of circuit breakers 130 , 230 , 330 , and 430 may be provided between the power terminals, thereby limiting the connection between the plurality of power strips 100 , 200 , 300 , and 400 .

[0274] Accordingly, the plurality of power strips 100, 200, 300 and 400 can be connected to each other through the plurality of circuit breakers 130, 230, 330 and 430, and the connection between the plurality of power strips 100, 200, 300 and 400 can be limited by opening and closing the plurality of circuit breakers 130, 230, 330 and 430.

[0275] The plurality of circuit breakers 130, 230, 330 and 430 may be DC dedicated distribution circuit breakers (MCCB).

[0276] The plurality of circuit breakers 130, 230, 330 and 430 can change opening and closing according to the status of the DC power supply, the driving power supply, one or more of the first power conversion devices 110, 210, 310 and 410 and at least one of the loads 20, thereby connecting or limiting the DC power supply between the plurality of power boards 100, 200, 300 and 400.

[0277] Here, the at least one state may be at least one of a situation where the DC power supply changes from an initial state, a situation where the driving power supply changes from an initial state, a situation where the action state of one or more of the first power conversion devices 110, 210, 310 and 410 changes, and a situation where the driving state of the load 20 changes.

[0278] For example, the DC power supply or the driving power supply may be below the standard rated value, one or more of the first power conversion devices 110, 210, 310 and 410 may fail / accidentally cause the operating state to change, or the driving power supplied to the load 20 may be reduced, causing the driving state of the load 20 to change.

[0279] The plurality of circuit breakers 130 , 230 , 330 , and 430 may be provided in a number corresponding to the plurality of power boards 100 , 200 , 300 , and 400 .

[0280] When the number of the plurality of power boards 100 , 200 , 300 , and 400 is N, the number of the plurality of circuit breakers 130 , 230 , 330 , and 430 may be set to N.

[0281] For example, when the plurality of power boards 100 , 200 , 300 and 400 is four, that is, N is 4, four circuit breakers may be provided.

[0282] Each of the plurality of circuit breakers 130 , 230 , 330 , and 430 may be normally open and closed when actuated to limit the connection between the plurality of power strips 100 , 200 , 300 , and 400 .

[0283] Therefore, each of the plurality of power strips 100 , 200 , 300 , and 400 may be connected to other power strips by opening and closing each of the plurality of circuit breakers 130 , 230 , 330 , and 430 .

[0284] When the DC power is connected between the plurality of power boards 100, 200, 300 and 400, the plurality of circuit breakers 130, 230, 330 and 430 may become closed circuits, and when the DC power is limited between the plurality of power boards 100, 200, 300 and 400, the plurality of circuit breakers 130, 230, 330 and 430 may become open circuits.

[0285] Each of the plurality of power boards 100, 200, 300 and 400 may be connected to other power boards through the plurality of circuit breakers 130, 230, 330 and 430 in the following manner: Figure 1 shown.

[0286] Each of the power supply terminals of the DC power supplies of the multiple power boards 100, 200, 300 and 400 can be connected to each of the power supply terminals of two adjacent power boards, wherein the power supply terminal of the power board on one side is connected to the power supply terminal of the power board on the other side, so that the connection between the power supply terminals can be continuous.

[0287] The connections between the power terminals of the plurality of power boards 100 , 200 , 300 , and 400 may be continuous, so that the connections between the plurality of power boards 100 , 200 , 300 , and 400 may form an outer-loop structure.

[0288] That is, in the system 1000, a plurality of the power boards 100, 200, 300, and 400 may be connected in a loop structure.

[0289] In the system 1000, when the first power board 100, the second power board 200, the third power board 300 and the fourth power board 400 are connected sequentially, the power end of the first power board 100 corresponding to the one side can be connected to the power end of the fourth power board 400 corresponding to the other side, so that the connection between the power ends can form a loop.

[0290] Reference Figure 4a The connection form is described in more detail below.

[0291] The first power strip 100 can be connected to the DC circuit and connected to the adjacent second power strip 200 and the fourth power strip 400, wherein the first circuit breaker 130 can be set between the first power strip 100 and the second power strip 200, and the fourth circuit breaker 430 can be set between the first power strip 100 and the fourth power strip 400, so that the connection between the first power strip 100 and the second power strip 200 can be limited by the circuit breaker 130 of the first power strip 100, and the connection between the first power strip 100 and the fourth power strip 400 can be limited by the circuit breaker 430 of the fourth power strip 400.

[0292] The second power strip 200 can be connected to the DC circuit and connected to the adjacent first power strip 100 and the third power strip 300, wherein the first circuit breaker 130 can be set between the first power strip 100 and the second power strip 200, and the second circuit breaker 230 can be set between the second power strip 200 and the third power strip 300, so that the connection between the first power strip 100 and the second power strip 200 can be limited by the circuit breaker 130 of the first power strip 100, and the connection between the second power strip 200 and the third power strip 300 can be limited by the circuit breaker 230 of the second power strip 200.

[0293] The third power strip 300 can be connected to the DC circuit and connected to the adjacent second power strip 200 and the fourth power strip 400, wherein the second circuit breaker 230 can be set between the second power strip 200 and the third power strip 300, and the third circuit breaker 330 can be set between the third power strip 300 and the fourth power strip 400, so that the connection between the second power strip 200 and the third power strip 300 can be limited by the circuit breaker 230 of the second power strip 200, and the connection between the third power strip 300 and the fourth power strip 400 can be limited by the circuit breaker 330 of the third power strip 300.

[0294] The fourth power strip 400 can be connected to the DC circuit and connected to the adjacent third power strip 300 and the first power strip 100, wherein the third circuit breaker 330 can be set between the third power strip 300 and the fourth power strip 400, and the fourth circuit breaker 430 can be set between the first power strip 100 and the fourth power strip 400, so that the connection between the third power strip 300 and the fourth power strip 400 can be limited by the circuit breaker 330 of the third power strip 300, and the connection between the first power strip 100 and the fourth power strip 400 can be limited by the circuit breaker 430 of the fourth power strip 400.

[0295] The first to fourth power boards 100, 200, 300 and 400 may be connected in such a manner that a plurality of the power boards 100, 200, 300 and 400 may be connected as shown in FIG. Figure 4b The connection is shown in the form of a loop.

[0296] As described above, each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to an adjacent power board to form a loop, so that the DC power may be transmitted between the plurality of power boards 100 , 200 , 300 , and 400 .

[0297] That is, each of the plurality of power boards 100, 200, 300 and 400 may be connected to an adjacent power board to form a Figure 4b The loop form shown, so that the first power board 100 can be connected to the second power board 200 and the fourth power board 400 and receive and supply the DC power between the second power board 200 or the fourth power board 400, the second power board 200 can be connected to the first power board 100 and the third power board 300 and receive and supply the DC power between the first power board 100 or the third power board 300, the third power board 300 can be connected to the second power board 200 and the fourth power board 400 and receive and supply the DC power between the second power board 200 or the fourth power board 400, the fourth power board 400 can be connected to the third power board 300 and the first power board 100 and receive and supply the DC power between the third power board 300 or the first power board 100.

[0298] As described above, in the plurality of power boards 100, 200, 300 and 400 connected in the form of a loop, the DC power can be received and supplied between the plurality of power boards 100, 200, 300 and 400 by opening and closing each of the plurality of circuit breakers 130, 230, 330 and 430.

[0299] For example, when the first circuit breaker 130 in the circuit connected between the first power board 100 and the second power board 200 becomes closed, the DC power can be received and supplied between the first power board 100 and the second power board 200; when the second circuit breaker 230 in the circuit connected between the second power board 200 and the third power board 300 becomes closed, the DC power can be received and supplied between the second power board 200 and the third power board 300; when the third circuit breaker 330 in the circuit connected between the third power board 300 and the fourth power board 400 becomes closed, the DC power can be received and supplied between the third power board 300 and the fourth power board 400; when the fourth circuit breaker 430 in the circuit connected between the fourth power board 400 and the first power board 100 becomes closed, the DC power can be received and supplied between the fourth power board 400 and the first power board 100.

[0300] Each of the plurality of power boards 100 , 200 , 300 and 400 may control and monitor operations of one or more of the first power conversion devices 110 , 210 , 310 and 410 and the second power conversion devices 120 , 220 , 320 and 420 included therein.

[0301] Each of the plurality of power boards 100, 200, 300 and 400 can control the opening and closing of each of the first to fourth circuit breakers 130a to 130d based on the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein.

[0302] Each of the plurality of power boards 100, 200, 300 and 400 can control and monitor the operation of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to detect the status of the DC power supply and the driving power supply.

[0303] Each of the plurality of power strips 100 , 200 , 300 , and 400 may receive power from any one of the one or more power supply sources 10 and convert the power into the DC power.

[0304] That is, each of the plurality of power strips 100 , 200 , 300 , and 400 may selectively receive power from any one of the at least one power supply sources 10 .

[0305] Each of the plurality of power strips 100 , 200 , 300 and 400 may receive power from any one of the one or more power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0306] The supply standard may be a standard regarding power supply priorities of one or more power supply sources 10 .

[0307] The plurality of power boards 100, 200, 300 and 400 can select any one of the first power conversion devices 110, 210, 310 and 410 according to the status of the one or more power supply sources 10, and transmit the DC power to the second power conversion devices 120, 220, 320 and 420 through the selected conversion devices.

[0308] That is, each of the plurality of power boards 100 , 200 , 300 and 400 may transmit the DC power to the second power conversion devices 120 , 220 , 320 and 420 through a conversion device selected according to the state of one or more of the power supply sources 10 .

[0309] When an abnormality occurs in one or more of the conversion device that transmits the DC power to the second power conversion device 120, 220, 320 and 420 that converts the driving power and the power supply source corresponding to the conversion device, the multiple power boards 100, 200, 300 and 400 can transmit the DC power to the second power conversion device 120, 220, 320 and 420 through other conversion devices other than the conversion device.

[0310] That is, when an abnormality occurs in the conversion device that is transmitting the DC power and any one or more of the power supply sources corresponding to the conversion device, each of the multiple power boards 100, 200, 300 and 400 can be switched to other conversion devices except the conversion device, and the DC power is transmitted to the second power conversion devices 120, 220, 320 and 420 through the switched conversion device.

[0311] When an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source corresponding to the conversion device, the multiple power boards 100, 200, 300 and 400 can switch the power supply source and the conversion device that are supplying power, so that other conversion devices except the conversion device transmit the DC power to the second power conversion device 120, 220, 320 and 420.

[0312] Among the plurality of circuit breakers 130, 230, 330 and 430, when the power supply of one or more power boards among the plurality of power boards 100, 200, 300 and 400 is interrupted, one or more circuit breakers arranged between the power board whose power supply is interrupted and a power board adjacent to the interrupted power board can become closed to connect the interrupted power board with the adjacent power board, so that the DC power is supplied from the adjacent power board to the interrupted power board.

[0313] In this case, after power supply is interrupted, the interrupted power board may be supplied with the DC power from the conversion device connected to the battery power source B until the conductive DC power is supplied from the adjacent power board.

[0314] Such a system 1000 may also include a control device 600 for monitoring the status of the plurality of power strips 100, 200, 300 and 400 and at least one of the plurality of circuit breakers 130, 230, 330 and 430, and controlling the plurality of power strips 100, 200, 300 and 400 and at least one of the plurality of circuit breakers 130, 230, 330 and 430 according to the monitoring results.

[0315] That is, the plurality of power strips 100 , 200 , 300 , and 400 may be controlled by the control device 600 .

[0316] Each of the plurality of power strips 100 , 200 , 300 , and 400 may communicate with the control device 600 , and perform an operation according to a result of the communication with the control device 600 .

[0317] 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 .

[0318] Each of the plurality of power boards 100, 200, 300 and 400 can request the control device 600 to perform opening and closing control on each of the plurality of circuit breakers 130, 230, 330 and 430 based on the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein.

[0319] Each of the plurality of power boards 100, 200, 300 and 400 can transmit the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to the control device 600.

[0320] Each of the multiple power boards 100, 200, 300 and 400 can control and monitor the operation of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein, and transmit the results of detecting the status of the DC power supply and the driving power supply to the control device 600.

[0321] Here, each of the plurality of power boards 100, 200, 300 and 400 may also include a control unit 140, 240, 340 and 440, which is used to control one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420, and monitor the abnormal status of at least one of the one or more power supply sources 10, one or more of the first power conversion devices 110, the DC power supply, the driving power supply and the load 20.

[0322] The control parts 140 , 240 , 340 , and 440 may be a central control device of the plurality of power strips 100 , 200 , 300 , and 400 .

[0323] The control parts 140 , 240 , 340 , and 440 may include a plurality of control units for controlling the plurality of power strips 100 , 200 , 300 , and 400 .

[0324] The control parts 140 , 240 , 340 , and 440 may further include a plurality of electronic devices for executing the functions of the plurality of power strips 100 , 200 , 300 , and 400 .

[0325] For example, it may include a storage unit storing software / applications / programs for controlling and executing functions of a plurality of the power strips 100, 200, 300 and 400, a dedicated control unit including the storage unit, a communication unit, a display unit, and one or more of an input unit.

[0326] The control unit 140 , 240 , 340 , and 440 may control one or more of the first power conversion devices 110 , 210 , 310 , and 410 , the second power conversion devices 120 , 220 , 320 , and 420 , and a plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0327] The control unit 140 , 240 , 340 , and 440 may include a PLC (Programmable Logic Controller) for controlling one or more of the first power conversion devices 110 , 210 , 310 , and 410 , the second power conversion devices 120 , 220 , 320 , and 420 , and a plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0328] The control units 140, 240, 340 and 440 can monitor the status of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and a plurality of the circuit breakers 130, 230, 330 and 430, and control the actions of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and a plurality of the circuit breakers 130, 230, 330 and 430 based on the monitoring results.

[0329] The control units 140, 240, 340 and 440 can also control the operation of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and a plurality of the circuit breakers 130, 230, 330 and 430 based on the states of one or more of the power supply sources 10 and the load 20.

[0330] The control unit 140 , 240 , 340 , and 440 may control conversion and supply of the DC power by controlling the operation of each of the one or more first power conversion devices 110 , 210 , 310 , and 410 .

[0331] For example, control can be performed by controlling the action of the control object conversion device in one or more of the first power conversion devices 110, 210, 310 and 410 to convert the DC power supply through the control object conversion device and supply it to the second power conversion device 120, 220, 320 and 420.

[0332] The control unit 140 , 240 , 340 , and 440 may also control the opening and closing of each opening and closing unit included in one or more of the first power conversion devices 110 , 210 , 310 , and 410 .

[0333] The control part 140 , 240 , 340 , and 440 may control conversion and supply of the driving power by controlling the operation of each of the second power conversion devices 120 , 220 , 320 , and 420 .

[0334] For example, the control may be performed by controlling the actions of the control object conversion devices in the second power conversion devices 120 , 220 , 320 , and 420 , so that the driving power is converted by the control object conversion devices and supplied to the load 20 .

[0335] The control unit 140 , 240 , 340 , and 440 may also control the opening and closing of each opening and closing unit included in the second power conversion device 120 , 220 , 320 , and 420 .

[0336] The control parts 140 , 240 , 340 , and 440 may control the reception and supply of the DC power by controlling the operations of the plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0337] For example, control may be performed to close the plurality of circuit breakers 130 , 230 , 330 , and 430 so as to receive the DC power from the other power boards 200 , 300 , or 400 , or to supply the DC power to the other power boards 200 , 300 , or 400 .

[0338] The control units 140, 240, 340 and 440 can also communicate with any one or more of the external communication devices and control devices, and control the actions of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and the plurality of circuit breakers 130, 230, 330 and 430 according to the communication execution results.

[0339] For example, a control instruction for controlling the action of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420, and any one or more of the circuit breakers 130, 230, 330 and 430 can be received from the control device, and the action of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420, and any one or more of the circuit breakers 130, 230, 330 and 430 can be controlled according to the control instruction.

[0340] The control unit 140 , 240 , 340 , and 440 may control to receive power from any one of the one or more power supply sources 10 and convert it into the DC power.

[0341] That is, the control units 140 , 240 , 340 , and 440 may perform control to selectively receive power from any one of the at least one power supply sources 10 .

[0342] The control parts 140 , 240 , 340 and 440 may control to receive power from any one of the one or more power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0343] The supply standard may be a standard regarding power supply priorities of one or more power supply sources 10 .

[0344] 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.

[0345] In the case of such the supply standard, the control parts 140, 240, 340 and 440 may control to receive power in the order of the first AC power source 10#1, the second AC power source 10#3 and the battery 10#3.

[0346] When receiving power from the first AC power source 10 # 1 , the control units 140 , 240 , 340 , and 440 may control the operation of the first conversion device 110 # 1 connected to the first AC power source 10 # 1 .

[0347] In this case, the control units 140, 240, 340 and 440 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.

[0348] When receiving power from the second AC power source 10 # 3 , the control units 140 , 240 , 340 , and 440 may control the operation of the third conversion device 110 # 3 connected to the second AC power source 10 # 3 .

[0349] In this case, the control units 140, 240, 340 and 440 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, thereby connecting only the third conversion device 110#3 and disconnecting the first conversion device 110#1 and the second conversion device 110#2.

[0350] When receiving power from the battery power source 10 # 2 , the control units 140 , 240 , 340 , and 440 may control the operation of the second conversion device 110 # 2 connected to the battery power source 10 # 2 .

[0351] In this case, the control units 140, 240, 340 and 440 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, thereby connecting only the second conversion device 110#2 and disconnecting the first conversion device 110#1 and the third conversion device 110#3.

[0352] The control unit 140, 240, 340 and 440 can be controlled to select any one of the first power conversion devices 110, 210, 310 and 410 according to the status of one or more of the power supply sources 10, so that the DC power is transmitted by the selected conversion device to each of the second power conversion devices 120, 220, 320 and 420.

[0353] That is, the control unit 140 , 240 , 340 , and 440 may control to convert the DC power through one selected from one or more of the first power conversion devices 110 , 210 , 310 , and 410 and transmit it to the second power conversion device 120 , 220 , 320 , and 420 .

[0354] For example, when an abnormality occurs in the first AC power source 10#1 and the second AC power source 10#3 in one or more of the power supply sources 10, control can be performed to select the second conversion device 110#2 connected to the battery power source 10#2, so that the second conversion device 110#2 receives power from the battery power source 10#2 and converts it into the DC power supply, and transmits the DC power supply to each of the second power conversion devices 120, 220, 320 and 420.

[0355] When an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source 10 corresponding to the conversion device, the control unit 140, 240, 340 and 440 can control other conversion devices except the conversion device to transmit the DC power to the second power conversion device 120, 220, 320 and 420.

[0356] When an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source 10 corresponding to the conversion device, the control unit 140, 240, 340 and 440 can switch the power supply source 10 that is supplying power and the conversion device 110 so that other conversion devices except the conversion device transmit the DC power to the second power conversion device 120, 220, 320 and 420.

[0357] For example, in the process of receiving power from the first AC power supply 10#1 and converting the DC power supply through the first conversion device 110#1, if the first conversion device 110#1 fails, or if 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, and the third conversion device 110#3 can convert the DC power supply and transmit the DC power supply to the second power conversion device 120.

[0358] As described above, the control unit 140, 240, 340 and 440 that controls one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and the plurality of the circuit breakers 130, 230, 330 and 430 controls the opening and closing of the plurality of the circuit breakers 130, 230, 330 and 430 according to the state of the DC power supply or the driving power supply, thereby controlling the reception and supply of the DC power supply through the other power supply boards 100, 200, 300 or 400.

[0359] 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 plurality of circuit breakers 130, 230, 330 and 430 to receive the DC power supply from the other power boards 100, 200, 300 or 400.

[0360] Alternatively, when the size of the driving power supply is greater than the size required by the load 20, or when the DC power supply is sufficient, control can be performed to close a plurality of the circuit breakers 130, 230, 330 and 430 to supply the DC power to the other power boards 100, 200, 300 or 400.

[0361] In the opposite case, when one or more of the first power conversion devices 110, 210, 310 and 410 or the second power conversion devices 120, 220, 320 and 420 fails and causes a fault current to flow through the output end, or when one or more of the power supply sources 10 or the loads 20 is abnormal and causes the fault current to flow through the power end, a plurality of the circuit breakers 130, 230, 330 and 430 can be opened to prevent the fault current from being supplied to the other power boards 100, 200, 300 or 400.

[0362] When an abnormality occurs in two or more of the power supply sources 10, the control unit 140, 240, 340 and 440 can control to close the plurality of circuit breakers 130, 230, 330 and 430, so as to receive the DC power from the other power boards 100, 200, 300 or 400 connected to the output end.

[0363] When an abnormality occurs in the other power strips 200, 300 or 400 connected to the power end, the control unit 140, 240, 340 and 440 can control to close the plurality of circuit breakers 130, 230, 330 and 430, thereby supplying DC power to the other power strips 100, 200, 300 or 400.

[0364] When an abnormality occurs in the other power boards 100, 200, 300 or 400 connected to the power end, the control unit 140, 240, 340 and 440 can be controlled to further receive power from any one of the more than one power supply sources 10, and control to close the plurality of circuit breakers 130, 230, 330 and 430, so that the DC power converted by the supply source 10 and its corresponding conversion device controlled to further supply power is supplied to the other power boards 100, 200, 300 or 400 through the power end.

[0365] For example, in the process of receiving power from the first AC power source 10#1 among more than one of the power supply sources 10, when an abnormality occurs in the other power boards 100, 200, 300 and 400, a plurality of the circuit breakers 130, 230, 330 and 430 can be closed to control the third conversion device 110#3 to further receive power from the second AC power source 10#3, thereby controlling the supply of the DC power converted by the third conversion device 110#3 to the other power boards 100, 200, 300 or 400 connected to the output end.

[0366] When an abnormality occurs in one or more of the power supply sources 10, the control unit 140, 240, 340 and 440 can request the control device 600 to control to close the plurality of circuit breakers 130, 230, 330 and 430, so as to receive the DC power from the other power boards 100, 200, 300 or 400 connected to the power end.

[0367] When an abnormality occurs in the other power strips 100, 200, 300 or 400 connected to the power end, the control unit 140, 240, 340 and 440 can request the control device 600 to control to close the plurality of circuit breakers 130, 230, 330 and 430, thereby supplying DC power to the other power strips 100, 200, 300 or 400.

[0368] When an abnormality occurs in the other power boards 100, 200, 300 or 400 connected to the power end, the control unit 140, 240, 340 and 440 can request the control device 600 to control to further receive power from any one of the more than one power supply sources 10, and control to close the plurality of circuit breakers 130, 230, 330 and 430, so that the DC power converted by the supply source 10 and its corresponding conversion device 110, 210, 310 and 410 that is controlled to further supply power is supplied to the other power boards 100, 200, 300 or 400 through the power end.

[0369] The control device 600 may control the reception and supply of the DC power by controlling the actions of the plurality of circuit breakers 130 , 230 , 330 , and 430 .

[0370] For example, control may be performed to close the plurality of circuit breakers 130 , 230 , 330 , and 430 so that the DC power is received or supplied between the plurality of power boards 100 , 200 , 300 , and 400 .

[0371] The control device 600 can communicate with each of the plurality of power strips 100, 200, 300 and 400, and control each of the plurality of power strips 100, 200, 300 and 400 based on status information received from each of the plurality of power strips 100, 200, 300 and 400.

[0372] For example, the conversion and supply of the DC power of each of the plurality of power boards 100, 200, 300 and 400 and the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300 and 400 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 and 400.

[0373] The control device 600 can communicate with each of the plurality of power boards 100, 200, 300 and 400, and control the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300 and 400, or control the plurality of circuit breakers 130, 230, 330 and 430 based on the status information received from each of the plurality of power boards 100, 200, 300 and 400.

[0374] The control device 600 can also sense the status of one or more power supply sources 10 and the load 20, or receive information about the status of one or more power supply sources 10 and the load 20 from an external communication unit, and control the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300 and 400 based on the status of one or more power supply sources 10 and the load 20, or control the multiple circuit breakers 130, 230, 330 and 430.

[0375] In this case, the control device 600 can transmit control instructions regarding the conversion and supply of the driving power to each of the plurality of power boards 100, 200, 300 and 400, or the control of the plurality of circuit breakers 130, 230, 330 and 430 to each of the plurality of power boards 100, 200, 300 and 400, or to each of the plurality of circuit breakers 130, 230, 330 and 430, so that the control unit 140, 240, 340 and 440 included in each of the plurality of power boards 100, 200, 300 and 400 performs control based on the control instructions, or performs opening and closing control on each of the plurality of circuit breakers 130, 230, 330 and 430.

[0376] For example, when an abnormality occurs in the entire system power supply G that is supplying power to the plurality of power boards 100, 200, 300 and 400, a control instruction for controlling the plurality of circuit breakers 130, 230, 330 and 430 to be open and to receive power from a power source other than the system power supply G and to convert and supply the DC power supply can be transmitted to the control units 140, 240, 340 and 440 included in each of the plurality of power boards 100, 200, 300 and 400 to cut off the power supply from the system power supply G and switch to other supply sources, thereby controlling each of the plurality of circuit breakers 130, 230, 330 and 430 to be open, and to receive power from the bypass power supply P or the battery power supply B and to convert and supply the DC power supply.

[0377] The control device 600 may control the opening and closing of the plurality of circuit breakers 130 , 230 , 330 , and 430 , so that the plurality of power boards 100 , 200 , 300 , and 400 receive the DC power.

[0378] When an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can control to close the circuit breakers 130, 230, 330 and 430 of any one of the circuits connected to the abnormal power board and the power board adjacent to the abnormal power board, so that the abnormal power board receives the DC power from the adjacent power board.

[0379] That is, when an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can control to close any one of the circuit breakers 130, 230, 330 and 430 connected to the abnormal power board, so that the abnormal power board receives the DC power from the adjacent power board.

[0380] For example, when a conversion device 110 of the first power board 100 among the plurality of power boards 100, 200, 300 and 400 fails, the first circuit breaker 130 of the circuit connected to the first power board 100 and the second power board 200 or the fourth circuit breaker 430 of the circuit connected to the first power board 100 and the fourth power board 400 may be controlled to close the circuit, and one or more of the first power conversion devices 110, 210, 310 and 410 of the first power board 100 may be cut off, and the DC power converted by any one of the one or more of the first power conversion devices 210 or 410 of the second power board 200 or the fourth power board 400 may be supplied to the second power conversion device 120 of the first power board 100. , 220, 320 and 420 are transmitted to the first power board 100 and each of the second power board 200 or the fourth power board 400 to supply the DC power converted by any one conversion device 210 or 410 of the second power board 200 or the fourth power board 400 to the second power conversion device 120, 220, 320 and 420 of the first power board 100, thereby controlling so that the first circuit breaker 130 or the fourth circuit breaker 430 becomes closed, and any one of more than one first power conversion device 210 or 410 of the second power board 200 or the fourth power board 400 supplies the DC power to the second power conversion device 120, 220, 320 and 420 of the first power board 100.

[0381] That is, when an abnormality occurs in an adjacent power strip, each of the plurality of power strips 100, 200, 300, and 400 may supply the DC power to the load 20 of the power strip where the abnormality occurs.

[0382] Here, when the DC power is supplied to the abnormal power board, the plurality of power boards 100, 200, 300 and 400 can select any one of the one or more first power conversion devices 510 for converting the DC power according to the status of one or more power supply sources 10, and transmit the DC power to the abnormal power board through the selected converter.

[0383] That is, when the DC power is supplied to the abnormality occurring power board, the plurality of power boards 100 , 200 , 300 and 400 may supply the DC power to the abnormality occurring power board through a converter selected according to the state of one or more of the power supply sources 10 .

[0384] For example, in the process of the fourth power board 400 supplying the DC power to the first power board 100, when the ratings of the system power supply G and the bypass power supply P in one or more of the power supply sources 10 that are supplying power to the fourth power board 400 are lower than the standard ratings, the second conversion device 410#2 corresponding to the battery power supply B can be selected to supply the DC power through the battery power supply, and the power received from the battery power supply B can be converted into the DC power through the selected second conversion device 410#2 and transmitted to the first power board 100.

[0385] When an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can control the circuit breakers 130, 230, 330 and 430 of the circuits connected to the multiple power boards adjacent to the abnormal power board to close the circuits, so that the abnormal power board receives the DC power from all the adjacent power boards.

[0386] That is, when an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can control to close the circuit breakers 130, 230, 330 and 430 connected to the abnormal power board, so that the abnormal power board receives the DC power from all adjacent power boards.

[0387] For example, when an abnormality occurs in the first power strip 100, the first circuit breaker 130 for limiting the connection between the first power strip 100 and the adjacent second power strip 200 and the fourth circuit breaker 430 for limiting the connection between the first power strip 100 and the fourth power strip 400 can be closed, so that the first power strip 100 can receive the DC power from the adjacent second power strip 200 and the fourth power strip 400.

[0388] When there are multiple abnormal power boards, the control device 600 can control to close multiple circuit breakers 130, 230, 330 and 430 used to limit the connection between each abnormal power board and the nearest power board, so that each abnormal power board receives the DC power from each adjacent power board.

[0389] That is, when there are a plurality of abnormality occurring power boards, the control device 600 may control so that each of a plurality of power boards adjacent to each abnormality occurring power board supplies the DC power to each abnormality occurring power board.

[0390] For example, when the second power strip 200 and the third power strip 300 fail, the first circuit breaker 130 for limiting the connection between the second power strip 200 and the first power strip 100 and the third circuit breaker 330 for limiting the connection between the third power strip 300 and the fourth power strip 400 can be closed, so that the second power strip 200 can receive the DC power from the first power strip 100 and the third power strip 300 can receive the DC power from the fourth power strip 400.

[0391] As described above, when an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, control can be performed to close the circuit breakers 130, 230, 330 and 430 used to limit the connection between the abnormal power board and the adjacent power board, so that the abnormal power board receives the DC power from the adjacent power board, so that each of the multiple power boards 100, 200, 300 and 400 can perform UPS function.

[0392] Therefore, in the power supply system 1000, even when unexpected abnormalities occur in one or more of the power supply sources 10, the plurality of power boards 100, 200, 300 and 400, and the load 20, the driving power can be continuously supplied to the load 20, thereby maintaining the operation of the load 20 without interruption, and the power supply can be appropriately and proactively responded to the occurrence of the abnormality, thereby stably performing the operation of the load 20 and the control of the power supply system 1000 regardless of the type and degree of the abnormality.

[0393] Another embodiment of the power supply system of the present invention will be described below, but the contents overlapping with the above contents will be omitted as much as possible.

[0394] The power supply system may be implemented in a combination or separation of the above or below embodiments.

[0395] The power supply system may be a power supply system including a plurality of power supply devices.

[0396] The power supply system may be a system including a plurality of packaged power devices to supply power.

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

[0398] like Figure 5 As shown, the power supply system 1000 (hereinafter referred to as the system) includes: a plurality of power boards 100, 200, 300 and 400, which convert power received from one or more power supply sources 10 into DC power, and convert the DC power into a driving power of a load 20 and supply it to the load 20; a supply board 500, which converts power received from one or more power supply sources 10 into DC power, and is configured between any two power boards among the plurality of power boards 100, 200, 300 and 400, so that when the supply board is connected to any one of the two power boards, the converted DC power is supplied to the connected load 20. a power board; a DC circuit, one end of which is connected to the other end and is connected to the power supply terminal that inputs and outputs the DC power supply in each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 to connect the DC power converted by the plurality of power boards 100, 200, 300 and 400 and the supply board 500; and a plurality of circuit breakers 130, 230, 330, 430 and 530, which are respectively arranged between the power supply terminals on the DC circuit to connect or disconnect the two power supply terminals connected to the circuit where the plurality of circuit breakers 130, 230, 330, 430 and 530 are located.

[0399] That is, the system 1000 may be an embodiment in which the embodiment of the control system 1000 further includes the supply plate 500 .

[0400] The system 1000 may also include a control device 600 for controlling the opening and closing of the plurality of circuit breakers 130, 230, 330, 430 and 530 according to the operating state of each of the plurality of power boards 100, 200, 300 and 400, thereby controlling the reception and supply of the DC power by each of the plurality of power boards 100, 200, 300 and 400.

[0401] The plurality of circuit breakers 130, 230, 330, 430 and 530 change opening and closing according to the operating states of one or more of the plurality of power boards 100, 200, 300 and 400, thereby connecting or limiting the DC power supply between the plurality of power boards 100, 200, 300 and 400 or between the plurality of power boards 100, 200, 300 and 400 and the supply board 500.

[0402] That is, the plurality of circuit breakers 130, 230, 330, 430 and 530 can change opening and closing according to the power supply status of one or more of the plurality of power strips 100, 200, 300 and 400, thereby connecting or disconnecting the power strip adjacent to each of the plurality of power strips 100, 200, 300 and 400 or the supply strip 500.

[0403] Among the plurality of circuit breakers 130, 230, 330, 430 and 530, at least one of the circuit breakers connected to the power terminal of the interrupted power board becomes closed to supply the DC power from one or more of the adjacent power boards and the supply boards 500 to the power board whose power supply is interrupted, thereby connecting at least one of the power terminals on both sides of the power terminal of the interrupted power board to the power terminal of the interrupted power board.

[0404] Therefore, in each of the plurality of power strips 100, 200, 300 and 400, when the power supply is interrupted, one or more of the circuit breakers connected to both sides can become closed to connect to the power terminal of the adjacent power strip or the supply strip 500, so that the DC power can be received from the adjacent power strip or the supply strip 500.

[0405] For example, in the case of a power strip having power strips connected on both sides, the DC power can be received from more than one of the power strips on both sides, and in the case of a power strip having the supply board 500 connected on one side, the DC power can be received from the supply board 500 or more of the power strips connected to the other side.

[0406] That is, in the system 1000, each of the plurality of power strips 100, 200, 300 and 400 can receive the DC power from at least one of the power terminals connected to both sides of the power terminal on the DC circuit.

[0407] When the power supply to one or more of the power boards 100, 200, 300 and 400 is interrupted, one or more of the circuit breakers 130, 230, 330, 430 and 530 may be closed, thereby connecting one or more of the power boards 100, 200, 300 and 400 to the supply board 500 to supply the DC power from the supply board 500 to the power board to which the power supply is interrupted.

[0408] like Figure 5 As shown, each of the plurality of power boards 100, 200, 300 and 400 may include one or more first power conversion devices 110 (210, 310 and 410), second power conversion devices 120 (220, 320 and 420), circuit breakers 130 (230, 330 and 430) and control units 140 (240, 340 and 440).

[0409] The power supply terminals of each of the more than one first power conversion devices 110, 210, 310 and 410 included in each of the plurality of power supply boards 100, 200, 300 and 400 can be connected together, wherein the DC power is input and output through the power supply terminals.

[0410] Therefore, the power supply terminal of each of the one or more first power conversion devices 110 , 210 , 310 , and 410 may form a DC circuit through which the DC power flows.

[0411] The input and output power terminals of the DC power supplies of the plurality of power boards 100, 200, 300 and 400 may be connected to each of the power terminals of two adjacent power boards, or to each of the power terminals of an adjacent power board and the supply board 500.

[0412] The power supply terminal of the input and output DC power supply of each of the multiple power supply boards 100, 200, 300 and 400 can be connected to each of the power supply terminals of two adjacent power supply boards 100, 200, 300 and 400, or to each of the power supply terminals of an adjacent power supply board and the supply board 500.

[0413] For example, Figure 5 As shown, the power end of the first power board 100 can be connected to the power end of the second power board 200 and the power end of the supply board 500, the power end of the second power board 200 can be connected to the power end of the first power board 100 and the power end of the third power board 300, the power end of the third power board 300 can be connected to the power end of the second power board 200 and the power end of the fourth power board 400, and the power end of the fourth power board 400 can be connected to the power end of the third power board 300 and the power end of the supply board 500.

[0414] Therefore, the connections between the power terminals of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may form a loop.

[0415] The power terminals of the input and output DC power supplies of the plurality of power boards 100, 200, 300 and 400 can be connected to each of the power terminals of two adjacent power boards, or to each of the power terminals of an adjacent power board and the supply board 500, wherein the power terminal of the power board on one side is connected to the power terminal of the power board on the other side or the supply board 500, so that the connection between the power terminals can be continuous.

[0416] Therefore, the connection between the power terminals of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be continuous, so that the connection between the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can form a ring structure.

[0417] The supply board 500 may be disposed between any two of the plurality of power boards 100 , 200 , 300 , and 400 .

[0418] The supply board 500 can be an emergency power supply board that converts the power received from each of the one or more power supply sources 10 into the DC power according to the status of the multiple power boards 100, 200, 300 and 400, thereby supplying the DC power to the multiple power boards 100, 200, 300 and 400.

[0419] Similar to the plurality of power boards 100 , 200 , 300 , and 400 , the supply board 500 may receive power from more than one power supply source 10 and convert it into the DC power.

[0420] The power supply source 10 that supplies power to the supply board 500 may include at least the battery power source 10#2.

[0421] The supply board 500 may further receive power from the first AC power source 10 # 1 and the second AC power source 10 # 3 .

[0422] Similar to the plurality of power boards 100 , 200 , 300 and 400 , the supply board 500 may further include more than one first power conversion device 510 for converting power received from more than one power supply source 10 into the DC power.

[0423] That is, Figure 5 As shown, the supply board 500 can receive power from the system power G, the bypass power P and the battery power B, and convert the DC power through one or more of the first power conversion devices 510 .

[0424] Here, in the one or more first power conversion devices 510 included in the supply board 500, the output of each of the one or more first power conversion devices 510 that output the DC power supply can be connected to a power supply terminal, so that the power supply terminal is connected to the power supply terminals of a plurality of the power supply boards 100, 200, 300 and 400 through a fifth circuit breaker 530.

[0425] That is, in the supply board 500, the fifth circuit breaker 530 can be set in the circuit connected to the plurality of power boards 100, 200, 300 and 400, so that the connection between the plurality of power boards 100, 200, 300 and 400 is limited by opening and closing the fifth circuit breaker 530.

[0426] The supply board 500 can supply the DC power to the plurality of power boards 100 , 200 , 300 , and 400 through any one of the first power conversion devices 510 according to the status of the one or more power supply sources 10 .

[0427] The supply board 500 may transmit the DC power output from one or more of the first power conversion devices 510 to the second power conversion devices 120 , 220 , 320 , and 420 of the power boards connected among the plurality of the power boards 100 , 200 , 300 , and 400 .

[0428] The plurality of power boards 100, 200, 300 and 400 and the supply board 500 may be configured as follows: Figure 5 Connect as shown.

[0429] The power ends of each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be connected, and each of the plurality of circuit breakers 130, 230, 330, 430 and 530 can be respectively connected at the position where the plurality of power boards 100, 200, 300 and 400 and the supply board 500 are connected.

[0430] That is, the power ends of each of the first to fourth power boards 100, 200, 300 and 400 and the supply board 500 can be connected, and each of the first to fifth circuit breakers 130, 230, 330, 430 and 530 can be respectively arranged between the first to fourth power boards 100, 200, 300 and 400 and the supply board 500.

[0431] The connections between the plurality of power boards 100 , 200 , 300 , and 400 and the output terminals of the supply board 500 may form a loop.

[0432] That is, the connections between the power terminals of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may be connected in a loop-forming manner.

[0433] A plurality of the power boards 100 , 200 , 300 , and 400 may be connected in series.

[0434] For example, the first power strip 100, the second power strip 200, the third power strip 300 and the fourth power strip 400 can be connected in series, wherein the fourth power strip 400 can be connected to the first power strip 100, so that the connection between the multiple power strips 100, 200, 300 and 400 can form a loop.

[0435] The supply board 500 may be disposed between any two of the plurality of power boards 100 , 200 , 300 , and 400 .

[0436] For example, it may be disposed between the first power board 100 and the fourth power board 400 , so as to be connected to the first power board 100 and the fourth power board 400 .

[0437] An example of connecting the plurality of power boards 100, 200, 300 and 400 and the supply board 500 in a loop form can be as follows: Figure 5shown.

[0438] The first power strip 100 can be connected to the second power strip 200 and the supply strip 500 on the DC circuit, wherein the second circuit breaker 230 can be set between the first power strip 100 and the second power strip 200, and the first circuit breaker 130 can be set between the first power strip 100 and the supply strip 500, so that the connection between the first power strip 100 and the second power strip 200 can be limited by the second circuit breaker 230 of the second power strip 200, and the connection between the first power strip 100 and the supply strip 500 can be limited by the first circuit breaker 130 of the first power strip 100.

[0439] The second power strip 200 can be connected to the first power strip 100 and the third power strip 300 on the DC circuit, wherein the second circuit breaker 230 can be set between the first power strip 100 and the second power strip 200, and the third circuit breaker 330 can be set between the second power strip 200 and the third power strip 300, so that the connection between the first power strip 100 and the second power strip 200 can be limited by the second circuit breaker 230 of the second power strip 200, and the connection between the second power strip 200 and the third power strip 300 can be limited by the third circuit breaker 330 of the third power strip 200.

[0440] The third power board 300 can be connected to the second power board 200 and the fourth power board 400 on the DC circuit, wherein the third circuit breaker 330 can be set between the second power board 200 and the third power board 300, and the fourth circuit breaker 430 can be set between the third power board 300 and the fourth power board 400, so that the connection between the second power board 200 and the third power board 300 can be limited by the third circuit breaker 330 of the third power board 300, and the connection between the third power board 300 and the fourth power board 400 can be limited by the fourth circuit breaker 430 of the fourth power board 400.

[0441] The fourth power board 400 can be connected to the third power board 300 and the supply board 500 on the DC circuit, wherein the fourth circuit breaker 430 can be arranged between the third power board 300 and the fourth power board 400, and the fifth circuit breaker 530 can be arranged between the fourth power board 400 and the supply board 500, so that the connection between the third power board 300 and the fourth power board 400 can be limited by the fourth circuit breaker 430 of the fourth power board 400, and the connection between the fourth power board 400 and the supply board 500 can be limited by the fifth circuit breaker 530 of the supply board 500.

[0442] The supply board 500 can be connected to the fourth power board 400 and the first power board 100 on the DC circuit, wherein the fifth circuit breaker 530 can be set between the fourth power board 400 and the supply board 500, and the first circuit breaker 130 can be set between the supply board 500 and the first power board 100, so that the connection between the fourth power board 400 and the supply board 500 can be limited by the fifth circuit breaker 530 of the supply board 500, and the connection between the supply board 500 and the first power board 100 can be limited by the first circuit breaker 130 of the first power board 100.

[0443] As described above, the first to fourth power boards 100, 200, 300 and 400 and the supply board 500 may be connected in such a manner that a plurality of the power boards 100, 200, 300 and 400 and the supply board 500 may be connected in a loop form.

[0444] As described above, the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may be connected in a loop form so that the DC power may be transmitted through the plurality of power boards 100 , 200 , 300 , and 400 or the supply board 500 .

[0445] That is, each of the plurality of power boards 100, 200, 300 and 400 is connected to an adjacent power board or the supply board 500 to form a loop, the first power board 100 can be connected to the second power board 200 and the supply board 500 and receive and supply the DC power between the second power board 200 or the supply board 500, the second power board 200 can be connected to the first power board 100 and the third power board 300 and receive and supply the DC power between the first power board 100 or the third power board 300, the third power board 300 can be connected to the first power board 100 and the third power board 300 and receive and supply the DC power between the first power board 100 or the third power board 300, The source board 300 can be connected to the second power board 200 and the fourth power board 400 and receive and supply the DC power between the second power board 200 or the fourth power board 400, the fourth power board 400 can be connected to the third power board 300 and the supply board 500 and receive and supply the DC power between the third power board 300 or the supply board 500, and the supply board 500 can be connected to the fourth power board 400 and the first power board 100 and receive and supply the DC power between the fourth power board 400 or the first power board 100.

[0446] As described above, in the plurality of power boards 100, 200, 300 and 400 and the supply board 500 connected in a loop, the DC power can be received and supplied by opening and closing each of the plurality of circuit breakers 130, 230, 330, 430 and 530.

[0447] For example, when the second circuit breaker 230 in the circuit between the first power board 100 and the second power board 200 is closed, the DC power can be received and supplied between the first power board 100 and the second power board 200; when the third circuit breaker 330 in the circuit between the second power board 200 and the third power board 300 is closed, the DC power can be received and supplied between the second power board 200 and the third power board 300; and when the fourth circuit breaker 330 in the circuit between the third power board 300 and the fourth power board 400 is closed, the DC power can be received and supplied between the second power board 200 and the third power board 300. When the circuit breaker 430 becomes closed, the DC power can be received and supplied between the third power board 300 and the fourth power board 400. When the fifth circuit breaker 530 in the circuit connected between the fourth power board 400 and the supply board 500 becomes closed, the DC power can be received and supplied between the fourth power board 400 and the supply board 500. When the first circuit breaker 130 in the circuit connected between the supply board 500 and the first power board 100 becomes closed, the DC power can be received and supplied between the supply board 500 and the first power board 100.

[0448] That is, each of the plurality of power boards 100 , 200 , 300 , and 400 may receive the DC power from other power boards connected to both sides or the supply board 500 .

[0449] In addition, each of the plurality of power boards 100 , 200 , 300 , and 400 may supply the DC power to one or more other power boards connected to both sides.

[0450] As described above, in the power supply system 1000, the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be connected in a loop on the DC circuit through the plurality of circuit breakers 130, 230, 330, 430 and 530, so that each of the plurality of power boards 100, 200, 300 and 400 can receive the DC power from more than one of the two sides, or supply the DC power to more than one of the two sides.

[0451] As described above, in the power supply system 1000 in which the plurality of power boards 100, 200, 300 and 400 and the supply board 500 are connected in a loop form, the DC power is transmitted to the plurality of power boards 100, 200, 300 and 400 through the supply board 500, so that the DC power can be received and supplied.

[0452] When the DC power is connected between the plurality of power boards 100, 200, 300 and 400 or between the plurality of power boards 100, 200, 300 and 400 and the supply board 500, the plurality of circuit breakers 130, 230, 330, 430 and 530 may become closed circuits, and when the DC power is limited between the plurality of power boards 100, 200, 300 and 400 or between the plurality of power boards 100, 200, 300 and 400 and the supply board 500, the plurality of circuit breakers 130, 230, 330, 430 and 530 may become open circuits.

[0453] Among the plurality of the circuit breakers 130, 230, 330, 430 and 530, when an abnormality occurs in a power board connected to the supply board 500 among the plurality of the power boards 100, 200, 300 and 400, the circuit breaker arranged between the abnormal power board and the supply board 500 can become a closed circuit so that the abnormal power board is connected to the supply board 500, thereby allowing the DC power to be supplied from the supply board 500 to the abnormal power board.

[0454] Among the plurality of circuit breakers 130, 230, 330, 430 and 530, when an abnormality occurs in a power board among the plurality of power boards 100, 200, 300 and 400 that is not adjacent to the supply board 500, at least one of the circuit breakers arranged on both sides of the power board where the abnormality occurs can be closed, so that the DC power is supplied to the power board where the abnormality occurs from at least one of the power boards adjacent to the power board where the abnormality occurs.

[0455] When an abnormality occurs in a power board among the plurality of power boards 100, 200, 300 and 400 that is not adjacent to the supply board 500, the plurality of circuit breakers 130, 230, 330, 430 and 530 may also close the circuit breakers respectively arranged between the power board where the abnormality occurs, the power board adjacent to the supply board 500 and the supply board 500, so that the DC power is supplied from the adjacent power board to the power board where the abnormality occurs, and the DC power is supplied from the supply board 500 to the adjacent power board.

[0456] Each of the plurality of power boards 100 , 200 , 300 and 400 may control and monitor operations of one or more of the first power conversion devices 110 , 210 , 310 and 410 and the second power conversion devices 120 , 220 , 320 and 420 included therein.

[0457] Each of the plurality of power boards 100, 200, 300 and 400 can control the opening and closing of each of the first to fourth circuit breakers 130, 230, 330 and 430 based on the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein.

[0458] Each of the plurality of power boards 100, 200, 300 and 400 can transmit the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to the control device 600.

[0459] Each of the plurality of power boards 100, 200, 300 and 400 can control and monitor the operation of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to detect the status of the DC power supply and the driving power supply.

[0460] Each of the plurality of power boards 100 , 200 , 300 , and 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 .

[0461] The supply board 500 may control the opening and closing of the fifth circuit breaker 510 according to the result of controlling and monitoring the operation of one or more first power conversion devices 510 .

[0462] The supply board 500 may transmit the results of controlling and monitoring the operations of the one or more first power conversion devices 510 to the control device 600 .

[0463] The supply board 500 may control and monitor the operation of one or more of the first power conversion devices 510 to detect the state of the DC power supply.

[0464] The supply board 500 may detect the state of the DC power source and transmit the detection result to the control device 600 .

[0465] Each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may receive power from any one of the more than one power supply sources 10 and convert it into the DC power.

[0466] That is, each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may selectively receive power from any one of the more than one power supply sources 10 .

[0467] Each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may receive power from any one of the one or more power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0468] The supply standard may be a standard regarding power supply priorities of one or more power supply sources 10 .

[0469] The plurality of power boards 100, 200, 300 and 400 can select any one of the first power conversion devices 110, 210, 310 and 410 according to the status of the one or more power supply sources 10, and transmit the DC power to each of the second power conversion devices 120, 220, 320 and 420 through the selected converter.

[0470] That is, each of the plurality of power boards 100 , 200 , 300 and 400 can transmit the DC power to each of the second power conversion devices 120 , 220 , 320 and 420 through a conversion device selected according to the state of one or more of the power supply sources 10 .

[0471] When an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source corresponding to the conversion device, the multiple power boards 100, 200, 300 and 400 can transmit the DC power to the second power conversion device 120, 220, 320 and 420 through other conversion devices except the conversion device.

[0472] That is, when an abnormality occurs in the conversion device that is transmitting the DC power and any one or more of the power supply sources corresponding to the conversion device, each of the multiple power boards 100, 200, 300 and 400 can be switched to other conversion devices except the conversion device, and the DC power is transmitted to the second power conversion devices 120, 220, 320 and 420 through the switched conversion device.

[0473] When an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source corresponding to the conversion device, the multiple power boards 100, 200, 300 and 400 can switch the power supply source and converter that are supplying power so that other conversion devices except the conversion device transmit the DC power to the second power conversion device 120, 220, 320 and 420.

[0474] When the DC power is supplied to a plurality of the power boards 100, 200, 300 and 400, the supply board 500 can select any one of the one or more first power conversion devices 530 for converting the DC power according to the status of the one or more power supply sources 10, and transmit the DC power to the plurality of the power boards 100, 200, 300 and 400 through the selected conversion device.

[0475] When an abnormality occurs in the conversion device that is transmitting the DC power to the plurality of power boards 100, 200, 300 and 400 and any one or more of the power supply sources corresponding to the conversion device, the supply board 500 can transmit the DC power to the plurality of power boards 100, 200, 300 and 400 through other conversion devices except the conversion device.

[0476] That is, when an abnormality occurs in the conversion device that is transmitting the DC power and any one or more of the power supply sources corresponding to the conversion device, the supply board 500 can switch to other conversion devices other than the conversion device, and transmit the DC power to multiple power boards 100, 200, 300 and 400 through the switched conversion devices.

[0477] As described above, the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 for converting and supplying the DC power may be controlled by the control device 600 .

[0478] The control device 600 can communicate with each of the multiple power strips 100, 200, 300 and 400 and the supply strip 500, and control each of the multiple power strips 100, 200, 300 and 400 and the supply strip 500 based on the status information received from each of the multiple power strips 100, 200, 300 and 400 and the supply strip 500.

[0479] For example, the conversion and supply of the DC power of each of the multiple power boards 100, 200, 300 and 400 and the supply board 500, and the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300 and 400 can be controlled based on the status information of the DC power and the driving power received from each of the multiple power boards 100, 200, 300 and 400 and the supply board 500.

[0480] The control device 600 can communicate with each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500, and control the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 based on the status information received from each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500, or control the plurality of circuit breakers 130, 230, 330, 430 and 530 included in each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500.

[0481] The control device 600 can also sense the status of one or more power supply sources 10 and the load 20, or receive information about the status of one or more power supply sources 10 and the load 20 from an external communication unit, and control the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 based on the status of one or more power supply sources 10 and the load 20, or control the multiple circuit breakers 130, 230, 330, 430 and 530 included in each of the multiple power boards 100, 200, 300 and 400 and the supply board 500.

[0482] 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 and 400 and the supply board 500, or the control of the multiple circuit breakers 130, 230, 330, 430 and 530 included in each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 to each of the multiple power boards 100, 200, 300 and 400 and the supply board 500, thereby performing control based on the control instructions through the control units 140, 240, 340 and 440 included in each of the multiple power boards 100, 200, 300 and 400.

[0483] For example, when an abnormality occurs in the entire system power supply G that is supplying power to the plurality of power boards 100, 200, 300 and 400, a control instruction for controlling the plurality of circuit breakers 130, 230, 330 and 430 to be open and to receive power from a power source other than the system power supply G and to convert and supply the DC power supply can be transmitted to the control units 140, 240, 340 and 440 included in each of the plurality of power boards 100, 200, 300 and 400 to cut off the power supply from the system power supply G and switch to other supply sources, thereby controlling each of the plurality of circuit breakers 130, 230, 330 and 430 to be open, and to receive power from the bypass power supply P or the battery power supply B and to convert and supply the DC power supply.

[0484] The control device 600 may control the opening and closing of the plurality of circuit breakers 130 , 230 , 330 , and 430 , so that the plurality of power boards 100 , 200 , 300 , and 400 receive the DC power.

[0485] The circuit breakers 130 , 230 , 330 and 430 may be normally open and closed when actuated to limit the connection between the power boards 100 , 200 , 300 and 400 and the connection between the power boards 100 , 200 , 300 and 400 and the supply board 500 .

[0486] When an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can control to close the circuit breakers 130, 230, 330, 430 and 530 of any one of the circuits connected to the abnormal power board and the power board adjacent to the abnormal power board or the supply board 500, so that the abnormal power board receives the DC power from the adjacent power board or the supply board 500.

[0487] That is, when an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can be controlled to close any one of the circuit breakers 130, 230, 330, 430 and 530 connected to the abnormal power board that is closest to the abnormal power board, so that the abnormal power board receives the DC power from the adjacent power board or the supply board 500.

[0488] When any one or more of the power boards 100 , 200 , 300 and 400 is abnormal, the control device 600 may control the abnormal power board to receive the DC power through the supply board 500 .

[0489] For example, when a conversion device 110 of the first power board 100 among the plurality of the power boards 100, 200, 300 and 400 fails, the first circuit breaker 130 for controlling the circuit connecting the first power board 100 to the supply board 500 may be closed, one or more of the first power conversion devices 110, 210, 310 and 410 of the first power board 100 may be disconnected, and the DC power converted by any one of the one or more first power conversion devices 510 of the supply board 500 may be supplied to the second power conversion device 120 of the first power board 100. , 220, 320 and 420 are transmitted to the first power board 100 and each of the supply board 500 to supply the DC power converted by any one of the conversion devices 510 of the supply board 500 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100, thereby controlling the first circuit breaker 130 to be closed, and any one of more than one of the first power conversion devices 510 of the supply board 500 supplies the DC power to the second power conversion devices 120, 220, 320 and 420 of the first power board 100.

[0490] When an abnormality occurs in a power board among the plurality of power boards 100, 200, 300 and 400 connected to the supply board 500, the control device 600 can control to close the circuit breakers 130, 230, 330, 430 and 530 of the circuit connected to the abnormal power board and the supply board 500, so that the abnormal power board receives the DC power from the supply board 500.

[0491] That is, when an abnormality occurs in a power board connected to the supply board 500 , the abnormality-occurring power board may receive the DC power from the supply board 500 .

[0492] For example, in a case where the first power board 100 and the fourth power board 400 among a plurality of power boards 100, 200, 300 and 400 are connected to the supply board 500, when an abnormality occurs in the first power board 100, control can be performed to close the first circuit breaker 130 of the circuit connecting the first power board 100 and the supply board 500, so that the first power board 100 receives the DC power from the supply board 500, and when an abnormality occurs in the fourth power board 400, control can be performed to close the fifth circuit breaker 530 of the circuit connecting the fourth power board 400 and the supply board 500, so that the fourth power board 400 receives the DC power from the supply board 500.

[0493] That is, when an abnormality occurs in a plurality of the power boards 100 , 200 , 300 , and 400 , the supply board 500 may supply the DC power to the load 20 of the power board where the abnormality occurs.

[0494] Here, when the DC power is supplied to the abnormal power board, the supply board 500 can select any one of the more than one first power conversion devices 510 for converting the DC power according to the status of more than one of the power supply sources 10, and transmit the DC power to the abnormal power board through the selected conversion device.

[0495] That is, when supplying the DC power to the abnormality occurring power board, the supply board 500 may supply the DC power to the abnormality occurring power board through a conversion device selected according to the states of one or more of the power supply sources 10 .

[0496] For example, in the process of the supply board 500 supplying the DC power to the first power board 100, when the ratings of the system power supply G and the bypass power supply P in one or more of the power supply sources 10 supplying power to the supply board 500 are lower than the standard ratings, the second conversion device 510#2 corresponding to the battery power supply B can be selected to supply the DC power through the battery power supply, and the power received from the battery power supply B can be converted into the DC power and transmitted to the first power board 100 through the selected 2-5 conversion device 510#2.

[0497] When an abnormality occurs in a power board among the plurality of power boards 100, 200, 300 and 400 that is not adjacent to the supply board, the control device 600 can control to close the circuit breakers 130, 230, 330, 430 and 530 arranged in the circuit between the abnormality-occurring power board and the supply board 500, so that the abnormality-occurring power board receives the DC power from the adjacent power board, and the adjacent power board receives the DC power from the supply board 500.

[0498] That is, the transmission of the DC power from the supply board 500 to the abnormality occurrence power board may be performed in a shift manner of the DC power supply.

[0499] For example, in Figure 5 In the connection form shown, when the third power board 300 which is not adjacent to the supply board 500 has an abnormality, the fourth circuit breaker 430 and the fifth circuit breaker 530 in the circuit between the third power board 300 and the supply board 500 can be closed, so that the load 20 of the third power board 300 receives the DC power from any one of the more than one first power conversion devices 410 of the fourth power board 400, and the load 20 of the fourth power board 400 receives the DC power from any one of the more than one first power conversion devices 510 of the supply board 500, or the load 20 of the third power board 300 and the supply board can be closed. 500 are closed, so that the load 20 of the third power board 300 receives the DC power from any one of the first power conversion devices 210 of the more than one second power board 200, the load 20 of the second power board 200 receives the DC power from any one of the first power conversion devices 110, 210, 310 and 410 of the more than one first power board 100, and the load 20 of the first power board 100 receives the DC power from any one of the first power conversion devices 510 of the more than one supply board 500.

[0500] In this case, control may be performed to supply the DC power through a path passing through a minimum number of the circuit breakers among the paths from the supply board 500 to the abnormality occurrence power board.

[0501] When an abnormality occurs in the supply board 500, the control device 600 can control to close the circuit breakers 130, 230, 330 and 430 of the power board closest to the abnormality power board, so that the abnormality power board receives the DC power from the adjacent power board.

[0502] That is, when an abnormality occurs in the supply board 500 that supplies the DC power to the abnormal power board, causing the supply board 500 to be unable to supply the DC power to the abnormal power board, the control device 600 can control to close the circuit breakers 130, 230, 330 and 430 of the power board closest to the abnormal power board, so that the abnormal power board receives the DC power from the adjacent power board.

[0503] For example, when the conversion device 110 of the first power board 100 and the supply board 500 of the plurality of the power boards 100, 200, 300 and 400 fail, the control instruction for controlling to close the second circuit breaker 230, disconnect one or more of the first power conversion devices 110, 210, 310 and 410 of the first power board 100, and supply the DC power converted by any one of the one or more first power conversion devices 210 of the second power board 200 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 can be transmitted to the control device 110 of the first power board 100. Input to each of the first power board 100 and the second power board 200 to supply the DC power converted by any one conversion device 210 of the second power board 200 closest to the first power board 100 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100, thereby controlling so that the second circuit breaker 230 becomes closed, and any one of more than one first power conversion devices 210 of the second power board 200 supplies the DC power to the second power conversion devices 120, 220, 320 and 420 of the first power board 100.

[0504] When there are multiple abnormal power boards, the control device 600 can control to close one or more circuit breakers 130, 230, 330, 430 and 530 in the supply board 500 and the power board closest to the abnormal power board according to the abnormal state of each abnormal power board, so that each abnormal power board receives the DC power from the supply board 500 or one or more of the adjacent power boards.

[0505] That is, when there are multiple abnormal power boards, the control device 600 can control the supply board 500 and one or more of the adjacent power boards to supply the DC power to each abnormal power board according to the abnormal state of each abnormal power board.

[0506] For example, when more than one of the first power conversion devices 110, 210, 310 and 410 in the first power board 100 is abnormal, and a part of the second power conversion devices 420 in the fourth power board 400 is temporarily interrupted, the control device 600 can determine that the abnormal state of the first power board 100 is more serious than the abnormal state of the second power board 200, thereby performing closed-circuit control on the first circuit breaker 130 so that the supply board 500 supplies the DC power to the first power board 100, and performing closed-circuit control on the fourth circuit breaker 430 so that the third power board 300 supplies the DC power to the fourth power board 400, so as to restore the operation of the first power board 100 through the supply board 500, and maintain the operation of the fourth power board 400 through the third power board 300 adjacent to the fourth power board 400.

[0507] As described above, when an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, control can be performed to receive the DC power from the supply board 500, so that the supply board 500 performs UPS function on each of the multiple power boards 100, 200, 300 and 400.

[0508] Therefore, in the power supply system 1000, even when unexpected abnormalities occur in one or more of the power supply sources 10, the plurality of power boards 100, 200, 300 and 400, and the load 20, the driving power can be continuously supplied to the load 20, thereby maintaining the operation of the load 20 without interruption, and the power supply can be appropriately and proactively responded to the occurrence of the abnormality, thereby stably performing the operation of the load 20 and the control of the power supply system 1000 regardless of the type and degree of the abnormality.

[0509] As described above, the supply board 500 that supplies the DC power to the plurality of the power boards 100 , 200 , 300 , and 400 in the power supply system 1000 may be formed in plural.

[0510] When the supply plate 500 is formed in plural, the supply plates 500 may be disposed between the power plates 100 , 200 , 300 , and 400 , respectively.

[0511] For example, they may be respectively arranged between the plurality of power boards 100 , 200 , 300 and 400 , so that each of the plurality of supply boards may be specifically responsible for supplying the DC power to each of the plurality of power boards 100 , 200 , 300 and 400 .

[0512] The operation example of the power supply system 1000 described above can be as follows Figures 6 to 9 Execute as shown.

[0513] like Figures 6 to 9 The operating example shown is an operating example when the power supply system 1000 includes four power boards 100, 200, 300 and 400 and one supply board 500. The power supply system 1000 may also include less than five or more than five of the power boards 100, 200, 300 and 400, and may include multiple supply boards 500.

[0514] The preferred embodiment of the power supply system 1000 can be as follows Figures 6 to 9 The embodiment shown in FIG. 1 includes four power boards 100, 200, 300 and 400 and a supply board 500. In the following, the power boards 100, 200, 300 and 400 and the supply board 500 are described as follows. Figures 6 to 9 As shown, the case where there are four and one respectively is described as an example.

[0515] Figure 6 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the system power supply G in one or more of the power supply sources 10. In this case, the power supply from the bypass power supply P and the battery power supply B is cut off, and 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.

[0516] like Figure 6 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.

[0517] Figure 7 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the bypass power supply P in one or more of the power supply sources 10. The situation where an abnormality occurs in the system power supply G may correspond to this situation. 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.

[0518] like Figure 7The 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.

[0519] Figure 8 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the battery power supply B in one or more of the power supply sources 10. A situation where an abnormality occurs in the system power supply G and the bypass power supply P may correspond to this situation. 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.

[0520] like Figure 8 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.

[0521] Fig. 9 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the emergency power supply A in one or more of the power supply sources 10. The situation where abnormalities occur in the system power supply G, the bypass power supply P and the battery power supply B can correspond to this situation. 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.

[0522] like Fig. 9 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.

[0523] As described above, in the power supply system 1000, each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can receive power from the same power supply source to operate, or each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can also selectively receive power from any one of more than one power supply source 10 to operate.

[0524] 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 supply board 500 can receive power from the battery power supply B to operate.

[0525] In addition, each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may also receive power from more than one power supply source 10 to operate.

[0526] 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 second power conversion devices 220, 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 second power conversion devices 120, 220, 320 and 420 of the first power board 100.

[0527] In such an example case, the second circuit breaker 230 connected to the first power strip 100 and the second power strip 200 can be closed so that the first power strip 100 and the second power strip 200 are connected to each other, thereby supplying the DC power from the second power strip 200 to the first power strip 100.

[0528] As described above, by each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 receiving power from more than one power supply source 10 to operate, power supply between the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be performed, that is, UPS functions between the plurality of power boards 100, 200, 300 and 400 and UPS functions of the supply board 500 can be performed.

[0529] Another embodiment of the power supply system of the present invention is described below.

[0530] like Fig.10As shown, the power supply system 1000 (hereinafter referred to as the system) includes: a plurality of power boards 100, 200, 300 and 400, which convert power received from one or more power supply sources 10 into DC power, and convert the converted DC power into a driving power of a load 20 and supply it to the load 20; a supply board 500, which converts power received from one or more power supply sources 10 into DC power, and supplies the converted DC power to the load 20 when the supply board is connected to the plurality of power boards 100, 200, 300 and 400 through a bus line 1. to a plurality of the power boards 100, 200, 300 and 400; a bus line 1, connected to the power terminal of each of the plurality of the power boards 100, 200, 300 and 400 and the power terminal of the supply board 500, thereby connecting the DC power converted by the plurality of the power boards 100, 200, 300 and 400 and the supply board 500; and a plurality of circuit breakers 130, 230, 330, 430 and 530, configured between each of the power terminals and the bus line 1, thereby connecting or disconnecting each of the power terminals and the bus line 1.

[0531] In the system 1000, the plurality of circuit breakers 130, 230, 330, 430 and 530 can be switched on and off according to the power supply status of one or more of the plurality of power boards 100, 200, 300 and 400, thereby connecting or limiting the DC power supply between the power terminal and the bus line 1.

[0532] In the system 1000, when the power supply to more than one of the plurality of power boards 100, 200, 300 and 400 is interrupted, more than two of the plurality of circuit breakers 130, 230, 330, 430 and 530 can become closed to connect the DC power between the plurality of power boards 100, 200, 300 and 400 through the bus line 1, or to connect the DC power between the plurality of power boards 100, 200, 300 and 400 and the supply board 500, thereby connecting more than two of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 to the bus line 1.

[0533] That is, among the plurality of circuit breakers 130, 230, 330, 430 and 530, when the power supply to more than one of the plurality of power strips 100, 200, 300 and 400 is interrupted, more than two circuit breakers including the circuit breaker connected to the power strip to which the power supply is interrupted can become closed.

[0534] Among the multiple circuit breakers 130, 230, 330, 430 and 530 of the system 1000, the circuit breakers connected to other power boards except the power board whose power supply is interrupted and one or more of the supply boards 500 and the power board whose power supply is interrupted become closed, so that the DC power supply is connected from one or more of the other power boards and the supply boards 500 to the power board whose power supply is interrupted through the bus line 1, thereby connecting the other power boards and one or more of the supply boards 500 and the interrupted power board to the bus line 1.

[0535] Therefore, when the power supply is interrupted, the plurality of power boards 100, 200, 300 and 400 can be connected to one or more of the other power boards and the supply board 500 through the bus line 1, thereby receiving the DC power from one or more of the other power boards and the supply board 500.

[0536] Here, each of the plurality of power strips 100, 200, 300 and 400 may be as follows: Fig.11 and Fig.12 The power supply device 100 is shown.

[0537] That is, the plurality of power boards 100, 200, 300 and 400 may be formed as follows. Fig.11 and Fig.12 The power supply device shown in FIG. 1 may include a plurality of Fig.11 and Fig.12 The power supply device 100 shown is in the form of a power strip, thereby comprising a plurality of power strips 100 , 200 , 300 and 400 .

[0538] The plurality of power boards 100 , 200 , 300 , and 400 may be modules including a plurality of power control devices.

[0539] The plurality of power boards 100 , 200 , 300 , and 400 may be power devices encapsulating a plurality of the power control devices.

[0540] Here, each of the plurality of power strips 100, 200, 300 and 400 may be as follows: Fig.11 and Fig.12 The power supply device 100 is shown.

[0541] That is, the plurality of power boards 100, 200, 300 and 400 may be formed as follows. Fig.11 and Fig.12 The power supply device shown in FIG. 1 may include a plurality of Fig.11 and Fig.12 The power supply device 100 shown is in the form of a power strip, thereby comprising a plurality of power strips 100 , 200 , 300 and 400 .

[0542] The plurality of power boards 100 , 200 , 300 , and 400 may be modules including a plurality of power control devices.

[0543] The plurality of power boards 100 , 200 , 300 , and 400 may be power devices encapsulating a plurality of the power control devices.

[0544] For example, it may be a power board encapsulating a plurality of the power control devices.

[0545] The plurality of power boards 100 , 200 , 300 and 400 may be packaged power boards installed in buildings requiring high power, such as power plants, workshops, factories, buildings, apartments, etc., to supply power.

[0546] The plurality of power boards 100 , 200 , 300 and 400 may also be packaged power boards disposed in any one space.

[0547] A plurality of the power control devices may be packaged in the plurality of the power boards 100 , 200 , 300 , and 400 to supply power to a load.

[0548] like Fig.11 As shown, the plurality of power boards 100, 200, 300 and 400 may include: one or more first power conversion devices 110, converting the power received from each of the one or more power supply sources 10 into the DC power; and one or more second power conversion devices 120, converting the DC power into the driving power for driving the load 20, and supplying the driving power to the load 20.

[0549] As described above, the plurality of power boards 100, 200, 300 and 400 include one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420, thereby converting the power received from one or more of the power supply sources 10 into the driving power and supplying the driving power to the load 20.

[0550] The specific structure of the plurality of power boards 100, 200, 300 and 400 including at least one of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 can be as follows: Fig.11 and Fig.12 shown.

[0551] One or more of the power supply sources 10 that supply power to the plurality of the power boards 100, 200, 300 and 400 can be externally connected to one or more of the first power conversion devices 110, 210, 310 and 410, and supply power to each of the one or more of the first power conversion devices 110, 210, 310 and 410.

[0552] Each of the one or more power supply sources 10 can be connected to each of the one or more first power conversion devices 110 , 210 , 310 and 410 , and supply DC or AC power to each of the one or more first power conversion devices 110 , 210 , 310 and 410 .

[0553] like Fig.11 and Fig.12 As shown, the one or more 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 power source 10 # 2 for storing DC power.

[0554] 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.

[0555] That is, Fig.13 As shown, the one or more power supply sources 10 may include a system power G, a bypass power P and a battery power B.

[0556] Therefore, each of the plurality of power boards 100 , 200 , 300 , and 400 may receive power from each of the system power G, the bypass power P, and the battery power B.

[0557] The first AC power source 10#1 may be a system power source G.

[0558] The first AC power source 10#1 may be a system power source G that supplies 440V AC power.

[0559] The second AC power source 10#3 may be a bypass power source P.

[0560] The second AC power source 10#3 may be a bypass power source P that supplies 440V AC power.

[0561] The battery power source 10#2 may be an emergency battery that stores DC power so as to supply the stored DC power in an emergency.

[0562] When an abnormality occurs in the first AC power source and the second AC power source, the battery power source 10 # 2 may supply the stored DC power to the plurality of power boards 100 , 200 , 300 , and 400 .

[0563] The DC power supply can be stored in the battery power supply B, so that 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 and 400 during the period when the power supply is switched and restored.

[0564] After the power supply is interrupted, the stored power of the battery power source B may be uninterruptedly supplied to the plurality of power strips 100, 200, 300, and 400 until the power supply is switched and restored.

[0565] One or more of the power supply sources 10 may also include an emergency power supply A, which supplies emergency generated power to the load 20 when the power supply of the first AC power supply G, the second AC power supply P and the battery power supply B is interrupted.

[0566] When an abnormality occurs in the first AC power source G, the second AC power source P, and the battery power source B, the emergency power source A can supply emergency generated power to the load 20 .

[0567] The emergency power supply A can be an emergency power supply for each of the loads 20 to maintain the driving of the loads 20 within a specified time when 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 multiple power boards 100, 200, 300 and 400 all malfunction and fail to supply power.

[0568] For example, the emergency power supply A may be a power supply including an emergency generator.

[0569] Preferably, each of the plurality of power boards 100, 200, 300 and 400 can be as follows Fig.10 As shown, power is received from three power supply sources 10, namely, the system power supply G, the bypass power supply P and the battery power supply B, and power can be received from the emergency power supply A only when the system power supply G, the bypass power supply P and the battery power supply B are unable to supply power.

[0570] Here, each of the more than one power supply sources 10 that supplies power to each of the plurality of power strips 100, 200, 300 and 400 can supply power to each of the plurality of power strips 100, 200, 300 and 400 in one system, or can supply power to each of the plurality of power strips 100, 200, 300 and 400 in each separate distribution board through a separate distribution board.

[0571] Each of the plurality of power boards 100, 200, 300 and 400 may include: one or more of the first power conversion devices 110, 210, 310 and 410, which convert the power received from one or more of the power supply sources 10 into the DC power; and the second power conversion devices 120, 220, 320 and 420, which convert the DC power received from one or more of the first power conversion devices 110, 210, 310 and 410 into the driving power and supply it to the load 20.

[0572] Here, more than one of the first power conversion devices 110 , 210 , 310 , and 410 and the second power conversion devices 120 , 220 , 320 , and 420 may be formed in plural.

[0573] Each of the plurality of power boards 100, 200, 300 and 400 can supply the DC power to one or more of the second power conversion devices 120, 220, 320 and 420 through any one of the first power conversion devices 110, 210, 310 and 410 according to the state of one or more of the power supply sources 10.

[0574] The first power conversion devices 110 , 210 , 310 and 410 are devices that convert received power into DC power, and may be converters, for example.

[0575] The first power conversion devices 110 , 210 , 310 , and 410 may be AC / DC converters that convert AC power into DC power, or may be DC / DC converters that convert DC power into DC power.

[0576] One or more of the first power conversion devices 110 , 210 , 310 , and 410 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.

[0577] The one or more first power conversion devices 110 , 210 , 310 and 410 may correspond to each of the one or more power supply sources 10 and include three conversion devices 110 # 1 to # 3 , 210 # 1 to # 3 , 310 # 1 to # 3 and 410 # 1 to # 3 .

[0578] One or more of the first power conversion devices 110, 210, 310 and 410 may include first to third conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3, and the first to third conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 are connected to each of the first AC power source 10#1, the battery power source 10#2 and the second AC power source 10#3, and receive power from the connected power supply source.

[0579] Accordingly, the first AC power supply 10#1 can be connected to the first conversion devices 110#1, 210#1, 310#1 and 410#1, and supply AC power to the first conversion devices 110#1, 210#1, 310#1 and 410#1, the battery power supply 10#2 can be connected to the second conversion devices 110#2, 210#2, 310#2 and 410#2, and supply DC power to the second conversion devices 110#2, 210#2, 310#2 and 410#2, and the second AC power supply 10#3 can be connected to the third conversion devices 110#3, 210#3, 310#3 and 410#3, and supply AC power to the third conversion devices 110#3, 210#3, 310#3 and 410#3.

[0580] The first conversion devices 110#1, 210#1, 310#1 and 410#1 can be AC / DC converters that convert AC power into DC power, the second conversion devices 110#2, 210#2, 310#2 and 410#2 can be DC / DC converters that convert the level of DC power, and the third conversion devices 110#3, 210#3, 310#3 and 410#3 can be AC / DC converters that convert AC power into DC power.

[0581] Each of the one or more first power conversion devices 110 , 210 , 310 , and 410 may include a switching unit for switching the connection at the front end and the rear end, respectively.

[0582] The switching unit may be provided at each of the input and output ends of each of the one or more first power conversion devices 110 , 210 , 310 and 410 to limit the switching of the power source input and output of the one or more first power conversion devices 110 , 210 , 310 and 410 .

[0583] Here, the switching unit provided at the input terminal may be a circuit breaker that senses an overcurrent and cuts off a circuit.

[0584] 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, 210#1, 310#1 and 410#1 that receive AC power from the first AC power source 10#1 and the second AC power source 10#3, and the third conversion device 110#3, 210#3, 310#3 and 410#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, 210#2, 310#2 and 410#2 that receive DC power from the battery power source 10#2.

[0585] The switching unit may switch on and off the connection of one or more of the first power conversion devices 110 , 210 , 310 , and 410 according to the operation of one or more of the first power conversion devices 110 , 210 , 310 , and 410 .

[0586] For example, when power is not received from one or more of the 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.

[0587] The output terminals of more than one of the first power conversion devices 110 , 210 , 310 and 410 may be connected to a power terminal.

[0588] That is, the output ends of more than one of the first power conversion devices 110, 210, 310 and 410 can be commonly connected to the power supply end, so that the DC power converted by more than one of the first power conversion devices 110, 210, 310 and 410 can flow through the power supply end.

[0589] Therefore, the power supply end may be commonly connected to the output end of more than one of the first power conversion devices 110 , 210 , 310 and 410 , so that the DC power output from more than one of the first power conversion devices 110 , 210 , 310 and 410 flows through the circuit.

[0590] The power supply terminal may be connected to the bus line 1 and input terminals of the second power conversion devices 120 , 220 , 320 and 420 .

[0591] The power supply end can be connected to the bus line 1 and the input end of the second power conversion device 120, 220, 320 and 420, so that the DC power is transmitted to the bus line 1 or to the second power conversion device 120, 220, 320 and 420 through the power supply end.

[0592] As described above, the power supply end commonly connected to the output ends of more than one of the first power conversion devices 110, 210, 310 and 410 can be connected to the bus line 1 and the input ends of the second power conversion devices 120, 220, 320 and 420, so that the DC power converted and output by more than one of the first power conversion devices 110, 210, 310 and 410 can be transmitted through the power supply end.

[0593] The DC power converted and output by one or more of the first power conversion devices 110 , 210 , 310 , and 410 may be transmitted to the second power conversion devices 120 , 220 , 320 , and 420 .

[0594] One or more of the first power conversion devices 110, 210, 310 and 410 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 by operating any one of the first to third conversion devices 110#1 to 110#3, 210#1 to 210#3, 310#1 to 310#3 and 410#1 to 410#3.

[0595] When the power supply of conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 that supply the DC power to the second power conversion devices 120, 220, 320 and 420 is interrupted, the plurality of power boards 100, 200, 300 and 400 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through other conversion devices except the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3.

[0596] When the power supply of conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 that supply the DC power to the second power conversion devices 120, 220, 320 and 420 is interrupted, during the period when the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 are switched to the other conversion devices, one or more of the first power conversion devices 110, 210, 310 and 410 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through conversion devices 110#2, 210#2, 310#2 and 410#2 that receive power from the battery power supply 10#2.

[0597] Here, the situation in which the power supply of the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3 is interrupted may be a situation in which an abnormal condition is detected in any one or more of the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3, the supply source connected to the conversion devices 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3, and the rated value of the DC power supply.

[0598] For example, in the process of the first conversion device 110#1, 210#1, 310#1 and 410#1 connected to the first AC power supply 10#1 supplying the DC power to the second power conversion device 120, 220, 320 and 420, when the rated value of the DC power output from the first conversion device 110#1, 210#1, 310#1 and 410#1 is reduced to below the specified standard, the third conversion device 110#3, 210#3, 310#3 and 410#3, which are other conversion devices other than the first conversion device 110#1, 210#1, 310#1 and 410#1, can supply the DC power to the second power conversion device 120, 220, 320 and 420.

[0599] In this case, while the first conversion devices 110#1, 210#1, 310#1 and 410#1 are switched to the third conversion devices 110#3, 210#3, 310#3 and 410#3, more than one of the first power conversion devices 110, 210, 310 and 410 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 through the second conversion devices 110#2, 210#2, 310#2 and 410#2 connected to the battery power supply 10#2.

[0600] That is, when the supply of the DC power to the second power conversion devices 120, 220, 320 and 420 is interrupted, the second conversion devices 110#2, 210#2, 310#2 and 410#2 connected to the battery power supply 10#2 can supply the DC power to the second power conversion devices 120, 220, 320 and 420 until the supply of the DC power is switched and restored.

[0601] The second power conversion devices 120 , 220 , 320 , and 420 may be formed in plural.

[0602] The second power conversion device 120 , 220 , 320 and 420 is a device for converting the received DC power into the driving power, and may be an inverter, for example.

[0603] When the load is a load driven by an AC power source, the second power conversion device 120 , 220 , 320 , and 420 may be an inverter that converts a DC power source received from one or more of the first power conversion devices 110 , 210 , 310 , and 410 into an AC driving power source.

[0604] When the load is a load driven by a DC power source, the second power conversion device 120 , 220 , 320 , and 420 may be an inverter that converts the DC power received from one or more of the first power conversion devices 110 , 210 , 310 , and 410 into a DC driving power source.

[0605] The second power conversion devices 120 , 220 , 320 , and 420 may be provided in a number corresponding to the loads 20 .

[0606] The load 20 may be formed in plural.

[0607] The second power conversion devices 120 , 220 , 320 , and 420 may include three or more second power conversion devices 120 # 1 to # 3 , 220 # 1 to # 3 , 320 # 1 to # 3 , and 420 # 1 to # 3 corresponding to the load 20 .

[0608] Each of the second power conversion devices 120 , 220 , 320 , and 420 may be connected to each of the loads 20 and supply the driving power to the connected loads.

[0609] Each of the second power conversion devices 120 , 220 , 320 , and 420 may include a switching unit for switching the connection at a front end.

[0610] The opening and closing unit may be a switch provided at an input terminal of each of the second power conversion devices 120 , 220 , 320 , and 420 to limit power input to the second power conversion devices 120 , 220 , 320 , and 420 .

[0611] Here, the switching unit provided at the input terminal may be a circuit breaker that senses an overcurrent and cuts off a circuit.

[0612] The driving power converted and output by the second power conversion devices 120 , 220 , 320 , and 420 may be transmitted to each of the loads 20 .

[0613] Here, the load 20 may include a motor M load.

[0614] The power terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to the supply board 500 through the bus line 1 .

[0615] In the plurality of power boards 100 , 200 , 300 and 400 , the plurality of circuit breakers 130 , 230 , 330 and 430 may be respectively disposed between the power supply terminal and the bus line 1 .

[0616] The power supply terminal of each of the plurality of power boards 100 , 200 , 300 and 400 may be connected to the plurality of circuit breakers 130 , 230 , 330 and 430 , thereby being connected to the supply board 500 connected to the bus line 1 through the plurality of circuit breakers 130 , 230 , 330 and 430 .

[0617] The supply board 500 may be an auxiliary power board that supplies the DC power to the plurality of the power boards 100 , 200 , 300 , and 400 .

[0618] The supply board 500 may be an emergency power supply board connected to the bus line 1 to supply the DC power to the plurality of power boards 100 , 200 , 300 , and 400 .

[0619] Similar to the plurality of power boards 100 , 200 , 300 , and 400 , the supply board 500 may receive power from any one or more of the power supply sources 10 and convert it into the DC power.

[0620] The supply board 500 may be an auxiliary power supply board which is commonly connected to the power supply end and converts the power received from any one or more of the power supply sources 10 into the DC power according to the status of the plurality of power boards 100, 200, 300 and 400, thereby supplying the DC power to the plurality of power boards 100, 200, 300 and 400 through the bus line 1.

[0621] That is, the supply board 500 may supply the DC power to the plurality of power boards 100 , 200 , 300 , and 400 through the bus line 1 .

[0622] The power supply source 10 that supplies power to the supply board 500 may include at least the battery power source 10#2.

[0623] That is, the supply board 500 can receive power from at least the battery power source 10#2.

[0624] The supply board 500 may further receive power from the first AC power source 10 # 1 and the second AC power source 10 # 3 .

[0625] That is, similar to the plurality of power boards 100, 200, 300 and 400, the supply board 500 can receive power from any one or more of the system power supply G, the bypass power supply P and the battery power supply B that supply power to the plurality of power boards 100, 200, 300 and 400 and convert it into the DC power supply.

[0626] For example, the supply board 500 may receive power from the battery power source B and convert it into the DC power source.

[0627] The supply board 500 may include one or more first power conversion devices 510 for converting power received from each of the first AC power source 10 # 1 , the second AC power source 10 # 3 , and the battery power source 10 # 2 into the DC power source.

[0628] That is, Fig.10 As shown, the supply board 500 can receive power from the system power G, the bypass power P and the battery power B, and convert the DC power through one or more of the first power conversion devices 510 .

[0629] Here, the output terminals of the DC power source of the one or more first power conversion devices 510 included in the supply board 500 may be connected to one of the power terminals, so that the power terminal is connected to the bus line 1 .

[0630] The supply board 500 may transmit the DC power output from one or more of the first power conversion devices 510 to the bus line 1 .

[0631] The supply board 500 may convert the DC power into the driving power and supply the driving power to a specific load connected to the supply board 500 .

[0632] The power supply terminal of the supply board 500 may be connected to the bus line 1 via a circuit breaker 530 connected to the supply board.

[0633] The supply board 500 can supply the DC power to the plurality of power boards 100 , 200 , 300 , and 400 through any one of the first power conversion devices 510 according to the status of the one or more power supply sources 10 .

[0634] Each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may receive power from any one of the more than one power supply sources 10 and convert it into the DC power.

[0635] That is, each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may selectively receive power from any one of the more than one power supply sources 10 .

[0636] Each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may receive power from any one of the one or more power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0637] The supply standard may be a standard regarding power supply priorities of one or more power supply sources 10 .

[0638] Each of the plurality of power boards 100 , 200 , 300 , and 400 may control and monitor operations of one or more of the first power conversion devices 110 , 210 , and 310 and the second power conversion devices 120 , 220 , and 320 included therein.

[0639] The plurality of power boards 100, 200, 300 and 400 can select any one of the first power conversion devices 110, 210 and 310 according to the status of the one or more power supply sources 10, and transmit the DC power to each of the second power conversion devices 120, 220 and 320 through the selected conversion device.

[0640] That is, each of the plurality of power boards 100 , 200 , 300 , and 400 may transmit the DC power to the second power conversion devices 120 , 220 , and 320 through one conversion device selected according to the state of one or more of the power supply sources 10 .

[0641] Each of the plurality of power boards 100, 200, 300 and 400 can control the opening and closing of each of the first to third circuit breakers 130, 230, 330, 430 and 530 based on the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210 and 310 and the second power conversion devices 120, 220 and 320 included therein.

[0642] In addition, the supply board 500 can select any one of the one or more first power conversion devices 410 according to the status of the one or more power supply sources 10, and transmit the DC power to the bus line 1 through the selected conversion device.

[0643] Each of the plurality of power boards 100, 200, 300 and 400 can control and monitor the operation of one or more of the first power conversion devices 110, 210 and 310 and the second power conversion devices 120, 220 and 320 included therein to detect the status of the DC power supply and the driving power supply.

[0644] When an abnormality occurs in one or more of the conversion devices that are transmitting the DC power to one or more of the first power conversion devices 120, 220 and 320 and the power supply sources corresponding to the conversion devices, the plurality of power boards 100, 200, 300 and 400 can transmit the DC power to the second power conversion devices 120, 220 and 320 through other conversion devices other than the conversion devices.

[0645] That is, when an abnormality occurs in the conversion device that is transmitting the DC power and any one or more of the power supply sources corresponding to the conversion device, each of the multiple power boards 100, 200, 300 and 400 can be switched to other conversion devices except the conversion device, and the DC power is transmitted to the second power conversion devices 120, 220 and 320 through the switched conversion device.

[0646] When an abnormality occurs in one or more of the conversion device that is transmitting the DC power to the second power conversion device 120, 220 and 320 and the power supply source corresponding to the conversion device, the multiple power boards 100, 200, 300 and 400 can switch the power supply source and the conversion device that are supplying power, so that other conversion devices except the conversion device transmit the DC power to the second power conversion device 120, 220 and 320.

[0647] The supply board 500 may control the supply of the DC power to the plurality of power boards 100 , 200 , 300 , and 400 based on the result of controlling and monitoring the operation of the one or more first power conversion devices 510 .

[0648] The supply board 500 may control and monitor the operation of one or more of the first power conversion devices 510 to detect the state of the DC power supply.

[0649] When an abnormality occurs in the conversion device that is transmitting the DC power to the plurality of power boards 100, 200, 300 and 400 and one or more of the power supply sources corresponding to the conversion device, the supply board 500 can transmit the DC power to the plurality of power boards 100, 200, 300 and 400 through other conversion devices except the conversion device.

[0650] That is, when an abnormality occurs in the conversion device that is transmitting the DC power and one or more of the power supply sources corresponding to the conversion device, the supply board 500 can switch to other conversion devices other than the conversion device, and transmit the DC power to multiple power boards 100, 200, 300 and 400 through the switched conversion devices.

[0651] When an abnormality occurs in any one or more of the conversion device that is transmitting the DC power to the plurality of power boards 100, 200, 300 and 400 and the power supply source corresponding to the conversion device, the supply board 500 can switch the power supply source and the conversion device that are supplying power, so that other conversion devices except the conversion device transmit the DC power to the plurality of power boards 100, 200, 300 and 400.

[0652] As described above, the supply board 500 that supplies the DC power to the plurality of the power boards 100 , 200 , 300 , and 400 in the system 1000 may be formed in plural.

[0653] As described above, in the supply boards 500 formed in plurality, a supply object to which the DC power is to be supplied from the plurality of power boards 100, 200, 300 and 400 can be pre-specified for each of the plurality of supply boards 500, thereby supplying the DC power to the pre-specified supply object.

[0654] For example, the first power board 100 and the second power board 200 can be pre-designated as supply objects of the first supply board, and the third power board 300 and the fourth power board 400 can be pre-designated as supply objects of the second supply board, so that when an abnormality occurs in the first power board 100 and the second power board 200, the first supply board can supply the DC power to the first power board 100 and the second power board 200, and when an abnormality occurs in the third power board 300 and the fourth power board 400, the second supply board can supply the DC power to the third power board 300 and the fourth power board 400.

[0655] In this case, the first supply board and the second supply board may also switch the supply objects according to the abnormal states of the plurality of the power boards 100 , 200 , 300 , and 400 .

[0656] The supply plate 500 may be disposed at a position spaced apart from each of the plurality of power plates 100 , 200 , 300 , and 400 within a prescribed distance.

[0657] The supply board 500 may be disposed at a position where a spaced distance from each of the plurality of power boards 100 , 200 , 300 , and 400 is minimum.

[0658] For example, it may be disposed at a position corresponding to a center portion in the arrangement structure of the plurality of power boards 100 , 200 , 300 , and 400 .

[0659] That is, the supply board 500 may be located at the center of a structure in which a plurality of the power boards 100 , 200 , 300 , and 400 are arranged.

[0660] As described above, when the supply board 500 is set at a position corresponding to the central part in the configuration structure of the plurality of power boards 100, 200, 300 and 400, the DC power can be easily supplied to each of the plurality of power boards 100, 200, 300 and 400, and the loss occurring during the supply of the DC power can be reduced.

[0661] The plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 may be respectively disposed between the power supply terminal of each of the plurality of power boards 100 , 200 , 300 , and 400 and the power supply terminal of the supply board 500 and the bus line 1 .

[0662] The plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 may be DC circuit breakers for cutting off a DC power source.

[0663] The plurality of circuit breakers 130 , 230 , 330 , 430 and 530 may be disposed between the power supply terminal to which the output terminal of each of the at least one first power conversion device 110 , 210 , 310 and 410 is connected and the power supply terminal of the supply board 500 and the bus line 1 .

[0664] That is, a plurality of the circuit breakers 130, 230, 330, 430 and 530 may be arranged in a circuit in which the power ends of the plurality of the power boards 100, 200, 300 and 400 and the power end of the supply board 500 are connected to the bus line 1, thereby limiting the connection between the plurality of the power boards 100, 200, 300 and 400 and the supply board 500 and the bus line 1.

[0665] Accordingly, the plurality of power boards 100 , 200 , 300 and 400 can be connected to the supply board 500 through the power terminals, and the connection with the supply board 500 can be limited by opening and closing the plurality of circuit breakers 130 , 230 , 330 , 430 and 530 .

[0666] The bus line 1 connecting the plurality of the power boards 100 , 200 , 300 , and 400 and the supply board 500 may be a DC circuit through which a DC power source flows.

[0667] The bus line 1 is a circuit connecting the plurality of the power boards 100 , 200 , 300 , and 400 and the supply board 500 , and may be a circuit for transmitting the DC power between the plurality of the power boards 100 , 200 , 300 , and 400 and the supply board 500 .

[0668] The bus line 1 may have a rated value ranging from the magnitude of the DC power supplied from at least one conversion device to the magnitude of the DC power supplied from two conversion devices.

[0669] That is, the rated value of the bus line 1 may be a rated value that can transmit the DC power supplied from at least two conversion devices.

[0670] Preferably, the bus line 1 may have a rating of a magnitude capable of transmitting DC power between all power boards connected to the bus line 1 .

[0671] The bus line 1 may flow the DC power according to the opening and closing of the plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 .

[0672] The plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 provided between the power terminal and the bus line 1 to limit the connection of the power terminal to the bus line 1 may be DC dedicated distribution circuit breakers (MCCBs).

[0673] The plurality of circuit breakers 130, 230, 330, 430 and 530 can be switched on and off according to the power supply status of the plurality of power boards 100, 200, 300 and 400 and one or more of the supply boards 500, thereby connecting or limiting the DC power between the plurality of power boards 100, 200, 300 and 400 and the supply board 500.

[0674] The plurality of circuit breakers 130, 230, 330, 430 and 530 can change opening and closing according to the states of the DC power supply, the driving power supply, one or more of the first power conversion devices 110, 210, 310 and 410 and at least one of the loads 20 of the plurality of power boards 100, 200, 300 and 400 and the supply board 500, thereby connecting or limiting the DC power supply between the plurality of power boards 100, 200, 300 and 400 and the supply board 500.

[0675] Here, the at least one state may be at least one of a situation where the DC power supply changes from an initial state, a situation where the driving power supply changes from an initial state, a situation where the power supply state of one or more of the first power conversion devices 110, 210, 310, 410 and 510 changes, and a situation where the driving state of the load 20 changes.

[0676] For example, the DC power supply or the driving power supply may be below the standard rated value, one or more of the first power conversion devices 110, 210, 310, 410 and 510 may fail / accidentally cause the power supply state to change, or the driving power supplied to the load 20 may be reduced, causing the driving state of the load 20 to change.

[0677] The plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 may be normally open and closed when actuated to limit the connection between the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 .

[0678] Therefore, each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to the supply board 500 by opening and closing each of the plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 .

[0679] When the DC power is connected between the power ends of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 and the bus line 1, the plurality of circuit breakers 130, 230, 330, 430 and 530 can become closed circuits, and when the DC power is limited between the power ends of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 and the bus line 1, the plurality of circuit breakers 130, 230, 330, 430 and 530 can become open circuits.

[0680] Among the plurality of circuit breakers 130, 230, 330, 430 and 530, when the power supply to more than one of the plurality of power boards 100, 200, 300 and 400 is interrupted, the circuit breaker connected to the power board whose power supply is interrupted and the circuit breaker connected to the supply board 500 can become closed circuit so that the interrupted power board and the supply board 500 are connected to the bus line 1, so that the DC power is supplied from the supply board 500 to the interrupted power board.

[0681] In this case, after the power supply is interrupted, the interrupted power board may be supplied with the DC power from the conversion device connected to the battery power B until the DC power is supplied on from the supply board 500 .

[0682] Among the plurality of circuit breakers 130, 230, 330, 430 and 530, when the power supply of one or more power boards among the plurality of power boards 100, 200, 300 and 400 is interrupted, the circuit breakers connected to the power board whose power supply is interrupted and the circuit breakers connected to other power boards except the interrupted power board may become closed circuit, so that the interrupted power board and the other power boards are connected to the bus line 1, so that the DC power is supplied from the other power boards to the interrupted power board.

[0683] That is, when the power supply is interrupted, the plurality of power strips 100 , 200 , 300 , and 400 may be connected to the other power strips to receive the DC power from the other power strips.

[0684] Among the plurality of circuit breakers 130, 230, 330, 430 and 530, when the power supply of more than one power board among the plurality of power boards 100, 200, 300 and 400 is interrupted, the circuit breaker connected to the power board whose power supply is interrupted, the circuit breaker connected to more than one power board among the other power boards, and the circuit breaker connected to the supply board 500 can become closed circuit, so that the DC power is supplied from more than one of the other power boards and the supply board 500 to the interrupted power board through the bus line 1.

[0685] Therefore, the plurality of power boards 100 , 200 , 300 and 400 may also be connected to a plurality of supply sources including the supply board 500 through the bus line 1 , thereby receiving the DC power from the plurality of supply sources.

[0686] Such a system 1000 may also include a control device 600 for monitoring the status of at least one of the plurality of power boards 100, 200, 300 and 400, the supply board 500 and the plurality of circuit breakers 130, 230, 330, 430 and 530, and controlling the plurality of power boards 100, 200, 300 and 400, the supply board 500 and the plurality of circuit breakers 130, 230, 330, 430 and 530 according to the monitoring results.

[0687] That is, the plurality of the power boards 100 , 200 , 300 , and 400 , the supply board 500 , and the plurality of the circuit breakers 130 , 230 , 330 , 430 , and 530 may be controlled by the control device 600 .

[0688] Each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may communicate with the control device 600 , and perform an operation according to a result of the communication with the control device 600 .

[0689] 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 .

[0690] Each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can request the control device 600 to perform opening and closing control on each of the plurality of circuit breakers 130, 230, 330, 430 and 530 based on the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein.

[0691] Each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can transmit the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to the control device 600.

[0692] Each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 can control and monitor the operation of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein, and transmit the results of detecting the status of the DC power supply and the driving power supply to the control device 600.

[0693] Here, each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 may also include a control unit 140, 240, 340 and 440, which is used to control one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420, and monitor the abnormal conditions of at least one of the one or more power supply sources 10, one or more of the first power conversion devices 110, 210, 310 and 410, the DC power supply, the driving power supply and the load 20.

[0694] The control parts 140 , 240 , 340 , and 440 may be a central control device of the plurality of power strips 100 , 200 , 300 , and 400 .

[0695] The control parts 140 , 240 , 340 , and 440 may include a plurality of control units for controlling the plurality of power strips 100 , 200 , 300 , and 400 .

[0696] The control parts 140 , 240 , 340 , and 440 may further include a plurality of electronic devices for executing the functions of the plurality of power strips 100 , 200 , 300 , and 400 .

[0697] For example, it may include a storage unit storing software / applications / programs for controlling and executing functions of a plurality of the power strips 100, 200, 300 and 400, a dedicated control unit including the storage unit, a communication unit, a display unit, and one or more of an input unit.

[0698] The control unit 140 , 240 , 340 , and 440 may control one or more of the first power conversion devices 110 , 210 , 310 , and 410 , the second power conversion devices 120 , 220 , 320 , and 420 , and a plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0699] The control unit 140 , 240 , 340 , and 440 may include a PLC (Programmable Logic Controller) for controlling one or more of the first power conversion devices 110 , 210 , 310 , and 410 , the second power conversion devices 120 , 220 , 320 , and 420 , and a plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0700] The control units 140, 240, 340 and 440 can monitor the status of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and a plurality of the circuit breakers 130, 230, 330 and 430, and control the actions of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and a plurality of the circuit breakers 130, 230, 330 and 430 based on the monitoring results.

[0701] The control units 140, 240, 340 and 440 can also control the operation of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and a plurality of the circuit breakers 130, 230, 330 and 430 based on the states of one or more of the power supply sources 10 and the load 20.

[0702] The control unit 140 , 240 , 340 , and 440 may control conversion and supply of the DC power by controlling the operation of each of the one or more first power conversion devices 110 , 210 , 310 , and 410 .

[0703] For example, control can be performed by controlling the action of the control object conversion device in one or more of the first power conversion devices 110, 210, 310 and 410 to convert the DC power supply through the control object conversion device and supply it to the second power conversion device 120, 220, 320 and 420.

[0704] The control unit 140 , 240 , 340 , and 440 may also control the opening and closing of each opening and closing unit included in one or more of the first power conversion devices 110 , 210 , 310 , and 410 .

[0705] The control part 140 , 240 , 340 , and 440 may control conversion and supply of the driving power by controlling the operation of each of the second power conversion devices 120 , 220 , 320 , and 420 .

[0706] For example, the control may be performed by controlling the actions of the control object conversion devices in the second power conversion devices 120 , 220 , 320 , and 420 , so that the driving power is converted by the control object conversion devices and supplied to the load 20 .

[0707] The control unit 140 , 240 , 340 , and 440 may also control the opening and closing of each opening and closing unit included in the second power conversion device 120 , 220 , 320 , and 420 .

[0708] The control parts 140 , 240 , 340 , and 440 may control the reception and supply of the DC power by controlling the operations of the plurality of the circuit breakers 130 , 230 , 330 , and 430 .

[0709] For example, control may be performed to close the plurality of circuit breakers 130 , 230 , 330 , and 430 so as to receive the DC power from the bus line 1 or to supply the DC power to the bus line 1 .

[0710] The control units 140, 240, 340 and 440 can also communicate with any one or more of the external communication devices and control devices, and control the actions of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and the plurality of circuit breakers 130, 230, 330 and 430 according to the communication execution results.

[0711] For example, a control instruction for controlling the action of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420, and any one or more of the circuit breakers 130, 230, 330 and 430 can be received from the control device, and the action of one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420, and any one or more of the circuit breakers 130, 230, 330 and 430 can be controlled according to the control instruction.

[0712] The control unit 140 , 240 , 340 , and 440 may control to receive power from any one of the one or more power supply sources 10 and convert it into the DC power.

[0713] That is, the control units 140 , 240 , 340 , and 440 may perform control to selectively receive power from any one of the at least one power supply sources 10 .

[0714] The control parts 140 , 240 , 340 and 440 may control to receive power from any one of the one or more power supply sources 10 and convert the power into the DC power according to a preset supply standard.

[0715] The supply standard may be a standard regarding power supply priorities of one or more power supply sources 10 .

[0716] 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 power source 10 # 3 .

[0717] In the case of such the supply standard, the control parts 140, 240, 340, and 440 may control to receive power in the order of the first AC power source 10#1, the second AC power source 10#3, and the battery power source 10#3.

[0718] When receiving power from the first AC power source 10 # 1 , the control units 140 , 240 , 340 , and 440 may control operations of the first conversion devices 110 # 1 , 210 # 1 , 310 # 1 , and 410 # 1 connected to the first AC power source 10 # 1 .

[0719] In this case, the control units 140, 240, 340 and 440 can close the opening and closing units of the first conversion devices 110#1, 210#1, 310#1 and 410#1, and open the opening and closing units of the second conversion devices 110#2, 210#2, 310#2 and 410#2 and the third conversion devices 110#3, 210#3, 310#3 and 410#3, thereby connecting the first conversion devices 110#1, 210#1, 310#1 and 410#1 and disconnecting the second conversion devices 110#2, 210#2, 310#2 and 410#2 and the third conversion devices 110#3, 210#3, 310#3 and 410#3.

[0720] When receiving power from the second AC power source 10 # 3 , the control units 140 , 240 , 340 , and 440 may control operations of the third conversion devices 110 # 3 , 210 # 3 , 310 # 3 , and 410 # 3 connected to the second AC power source 10 # 3 .

[0721] In this case, the control unit 140, 240, 340 and 440 can close the opening and closing units of the third conversion devices 110#3, 210#3, 310#3 and 410#3, and open the opening and closing units of the first conversion devices 110#1, 210#1, 310#1 and 410#1 and the second conversion devices 110#2, 210#2, 310#2 and 410#2, so as to only connect the third conversion devices 110#3, 210#3, 310#3 and 410#3 and disconnect the first conversion devices 110#1, 210#1, 310#1 and 410#1 and the second conversion devices 110#2, 210#2, 310#2 and 410#2.

[0722] When receiving power from the battery power source 10 # 2 , the control units 140 , 240 , 340 , and 440 may control the operations of the second conversion devices 110 # 2 , 210 # 2 , 310 # 2 , and 410 # 2 connected to the battery power source 10 # 2 .

[0723] In this case, the control unit 140, 240, 340 and 440 can close the opening and closing units of the second conversion devices 110#2, 210#2, 310#2 and 410#2, and open the opening and closing units of the first conversion devices 110#1, 210#1, 310#1 and 410#1 and the third conversion devices 110#3, 210#3, 310#3 and 410#3, so as to connect only the second conversion devices 110#2, 210#2, 310#2 and 410#2 and disconnect the first conversion devices 110#1, 210#1, 310#1 and 410#1 and the third conversion devices 110#3, 210#3, 310#3 and 410#3.

[0724] The control unit 140, 240, 340 and 440 can be controlled to select any one of the first power conversion devices 110, 210, 310 and 410 according to the status of one or more of the power supply sources 10, so that the DC power is transmitted from the selected conversion device 110 to each of the second power conversion devices 120, 220, 320 and 420.

[0725] That is, the control unit 140 , 240 , 340 , and 440 may control to convert the DC power through a selected one of the first power conversion devices 110 , 210 , 310 , and 410 and transmit it to the second power conversion device 120 , 220 , 320 , and 420 .

[0726] For example, when an abnormality occurs in the first AC power source 10#1 and the second AC power source 10#3 in one or more of the power supply sources 10, control can be performed to select the second conversion devices 110#2, 210#2, 310#2 and 410#2 connected to the battery power source 10#2, so that the second conversion devices 110#2, 210#2, 310#2 and 410#2 receive power from the battery power source 10#2 and convert it into the DC power supply, and transmit the DC power supply to each of the second power conversion devices 120, 220, 320 and 420.

[0727] When an abnormality occurs in any one or more of the conversion device 110 that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source 10 corresponding to the conversion device 110, the control unit 140, 240, 340 and 440 can control other conversion devices 110 except the conversion device 110 to transmit the DC power to the second power conversion device 120, 220, 320 and 420.

[0728] When an abnormality occurs in any one or more of the conversion device 110 that is transmitting the DC power to the second power conversion device 120, 220, 320 and 420 and the power supply source 10 corresponding to the conversion device 110, the control unit 140, 240, 340 and 440 can switch the power supply source 10 that is supplying power and the conversion device 110 so that other conversion devices 110 except the conversion device 110 transmit the DC power to the second power conversion device 120, 220, 320 and 420.

[0729] For example, in the process of receiving power from the first AC power source 10#1 and converting the DC power source through the first conversion devices 110#1, 210#1, 310#1 and 410#1, if the first conversion devices 110#1, 210#1, 310#1 and 410#1 fail, or if the first AC power source 10#1 stops operating, the first AC power source 10#1 that is supplying power can be switched to the second AC power source 10#3, and the first conversion devices 110#1, 210#1, 310#1 and 410#1 can be switched to the third conversion devices 110#3, 210#3, 310#3 and 410#3 to receive power from the second AC power source 10#3, and the third conversion devices 110#3, 210#3, 310#3 and 410#3 can be converted into the DC power source and transmitted to the inverter 120.

[0730] As described above, the control unit 140, 240, 340 and 440 that controls one or more of the first power conversion devices 110, 210, 310 and 410, the second power conversion devices 120, 220, 320 and 420 and the plurality of circuit breakers 130, 230, 330 and 430 controls the opening and closing of the plurality of circuit breakers 130, 230, 330 and 430 according to the state of the DC power supply or the driving power supply, thereby controlling the reception and supply of the DC power supply through the bus line 1.

[0731] 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 plurality of circuit breakers 130 , 230 , 330 and 430 to receive the DC power supply from the bus line 1 .

[0732] Alternatively, when the size of the driving power source is greater than the size required by the load 20 or the DC power source is sufficient, control may be performed to close the plurality of circuit breakers 130 , 230 , 330 and 430 to supply the DC power source to the bus line 1 .

[0733] In the opposite case, when one or more of the first power conversion devices 110, 210, 310 and 410 or the second power conversion devices 120, 220, 320 and 420 fails and causes a fault current to flow through the output end, or when one or more of the power supply sources 10 or the loads 20 is abnormal and causes the fault current to flow through the output end, a plurality of the circuit breakers 130, 230, 330 and 430 can be opened to prevent the fault current from being supplied to the bus line 1.

[0734] When an abnormality occurs in two or more of the power supply sources 10, the control unit 140, 240, 340 and 440 can control to close the plurality of circuit breakers 130, 230, 330 and 430, so as to receive the DC power from other power supply devices connected to the bus line 1 through the bus line 1.

[0735] When an abnormality occurs in two or more of the one or more power supply sources 10, the control unit 140, 240, 340 and 440 can control to disconnect the connection between the one or more power supply sources 10 and the one or more first power conversion devices 110, 210, 310 and 410, and close the plurality of circuit breakers 130, 230, 330 and 430, so as to receive the DC power from other power supply devices 200, 300 and 400 connected to the bus line 1 through the bus line 1, or receive the DC power from the supply board 500.

[0736] For example, when an abnormality occurs in the first AC power source 10#1 and the second AC power source 10#3 in one or more of the power supply sources 10, control can be performed to close the plurality of circuit breakers 130, 230, 330 and 430, thereby receiving the DC power from the other power supply devices 200, 300 and 400 connected to the bus line 1 through the bus line 1, or receiving the DC power from the supply board 500.

[0737] When an abnormality occurs in the other power supply devices 200, 300 and 400 connected to the bus line 1, the control units 140, 240, 340 and 440 can control to close the plurality of circuit breakers 130, 230, 330 and 430, thereby supplying DC power to the other power supply devices 200, 300 and 400 through the bus line 1.

[0738] When an abnormality occurs in the other power supply devices 200, 300 and 400 connected to the bus line 1, the control units 140, 240, 340 and 440 can be controlled to further receive power from any one of the more than one power supply sources 10, and control to close the plurality of circuit breakers 130, 230, 330 and 430, so that the DC power converted by the supply source 10 and its corresponding conversion device 110 that is controlled to further supply power is supplied to the other power supply devices through the bus line 1.

[0739] For example, in the process of receiving power from the first AC power source 10#1 among more than one of the power supply sources 10, when an abnormality occurs in the other power supply devices 200, 300 and 400, control can be performed to close the plurality of circuit breakers 130, 230, 330 and 430, thereby controlling the third conversion devices 110#3, 210#3, 310#3 and 410#3 to further receive power from the second AC power source 10#3, and then supply the DC power converted by the third conversion devices 110#3, 210#3, 310#3 and 410#3 to the other power supply devices 200, 300 and 400 connected to the bus line 1 through the bus line 1.

[0740] When an abnormality occurs in one or more of the power supply sources 10 , the control units 140 , 240 , 340 and 440 may request the control device 600 to control the plurality of circuit breakers 130 , 230 , 330 , 430 and 530 to be closed, thereby receiving the DC power from the supply board 500 .

[0741] The control device 600 may control the opening and closing of each of the plurality of circuit breakers 130 , 230 , 330 , 430 , and 500 to connect the plurality of power boards 100 , 200 , 300 , and 400 or the supply board 500 to the bus line 1 .

[0742] The bus line 1 may be connected to the plurality of the power boards 100 , 200 , 300 , and 400 and the supply board 500 .

[0743] The plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may be connected to the bus line 1 through a plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 .

[0744] The circuit breakers 130 , 230 , 330 , 430 , and 530 may be respectively disposed between each of the power boards 100 , 200 , 300 , and 400 and the bus line 1 , and between the supply board 500 and the bus line 1 .

[0745] The plurality of circuit breakers 130, 230, 330, 430 and 530 may include: first to fourth circuit breakers 130, 230, 330 and 430, used to limit the connection between each of the plurality of power boards 100, 200, 300 and 400 and the bus line 1; and a fifth circuit breaker 530, used to limit the connection between the supply board 500 and the bus line 10.

[0746] That is, in the supply board 500 , the fifth circuit breaker 530 may be provided in a circuit connected to the bus line 1 , so that the connection with the bus line 1 is restricted by opening and closing the fifth circuit breaker 530 .

[0747] The supply board 500 may transmit the DC power output from one or more of the first power conversion devices 510 to the bus line 1 .

[0748] The bus line 1 can be commonly connected to the power supply end of each input and output of the DC power supply in the plurality of power boards 100, 200, 300 and 400 and the supply board 500, so that the DC power converted by the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be transmitted to the bus line 1.

[0749] The bus line 1 is a DC bus line through which DC power flows, and the DC power transmitted through the power supply terminal of each of the plurality of the power boards 100 , 200 , 300 , and 400 and the supply board 500 may flow through the DC bus line.

[0750] That is, the bus line 1 may flow through the DC power according to the opening and closing of each of the plurality of circuit breakers 130 , 230 , 330 , 430 , and 530 .

[0751] As described above, the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be connected to the bus line 1 through the plurality of circuit breakers 130, 230, 330, 430 and 530, so that the DC power can be transmitted between the plurality of power boards 100, 200, 300 and 400 and the supply board 500 through the bus line 1.

[0752] Each of the plurality of power boards 100, 200, 300 and 400 can transmit the results of controlling and monitoring the actions of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to the control device 600.

[0753] Each of the plurality of power boards 100, 200, 300 and 400 can control and monitor the operation of one or more of the first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 included therein to detect the status of the DC power supply and the driving power supply.

[0754] Each of the plurality of power boards 100 , 200 , 300 , and 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 .

[0755] The supply board 500 may control the opening and closing of the fifth circuit breaker 510 according to the result of controlling and monitoring the operation of one or more first power conversion devices 510 .

[0756] The supply board 500 may transmit the results of controlling and monitoring the operations of the one or more first power conversion devices 510 to the control device 600 .

[0757] The supply board 500 may control and monitor the operation of one or more of the first power conversion devices 510 to detect the state of the DC power supply.

[0758] The supply board 500 may detect the state of the DC power source and transmit the detection result to the control device 600 .

[0759] The control device 600 can communicate with each of the multiple power strips 100, 200, 300 and 400 and the supply strip 500, and control each of the multiple power strips 100, 200, 300 and 400 and the supply strip 500 based on the status information received from each of the multiple power strips 100, 200, 300 and 400 and the supply strip 500.

[0760] For example, the conversion and supply of the DC power of each of the multiple power boards 100, 200, 300 and 400 and the supply board 500, and the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300 and 400 can be controlled based on the status information of the DC power and the driving power received from each of the multiple power boards 100, 200, 300 and 400 and the supply board 500.

[0761] The control device 600 can communicate with each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500, and control the conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 based on the status information received from each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500, or control the plurality of circuit breakers 130, 230, 330, 430 and 530 included in each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500.

[0762] The control device 600 can also sense the status of one or more power supply sources 10 and the load 20, or receive information about the status of one or more power supply sources 10 and the load 20 from an external communication unit, and control the conversion and supply of the driving power of each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 based on the status of one or more power supply sources 10 and the load 20, or control the multiple circuit breakers 130, 230, 330, 430 and 530 included in each of the multiple power boards 100, 200, 300 and 400 and the supply board 500.

[0763] 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 and 400 and the supply board 500, or the control of the multiple circuit breakers 130, 230, 330, 430 and 530 included in each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 to each of the multiple power boards 100, 200, 300 and 400 and the supply board 500, thereby performing control based on the control instructions through the control units 140, 240, 340 and 440 included in each of the multiple power boards 100, 200, 300 and 400.

[0764] For example, when an abnormality occurs in the entire system power supply G that is supplying power to the plurality of power boards 100, 200, 300 and 400, a control instruction for controlling the plurality of circuit breakers 130, 230, 330 and 430 to be open and to receive power from a power source other than the system power supply G and to convert and supply the DC power supply can be transmitted to the control units 140, 240, 340 and 440 included in each of the plurality of power boards 100, 200, 300 and 400 to cut off the power supply from the system power supply G and switch to other supply sources, thereby controlling each of the plurality of circuit breakers 130, 230, 330 and 430 to be open, and to receive power from the bypass power supply P or the battery power supply B and to convert and supply the DC power supply.

[0765] When an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, the control device 600 can control the circuit breakers 130, 230, 330, 430 and 530 of the abnormal power board and the supply board 500 to close the circuit, so that the abnormal power board receives the DC power from the supply board 500 through the bus line 1.

[0766] For example, when a conversion device 110 of the first power board 100 among the plurality of the power boards 100, 200, 300 and 400 fails, a control instruction for controlling to close the circuit breakers 130 and 530 of each of the first power board 100 and the supply board 500, to cut off one or more of the first power conversion devices 110, 210, 310 and 410 of the first power board 100, and to supply the DC power converted by any one of the one or more first power conversion devices 510 of the supply board 500 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1 may be executed. Transmitted to each of the first power board 100 and the supply board 500, so as to supply the DC power converted by any one conversion device 510 of the supply board 500 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1, thereby controlling so that the circuit breakers 130 and 530 of each of the first power board 100 and the supply board 500 become closed, and any one of more than one of the first power conversion devices 510 of the supply board 500 supplies the DC power to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1.

[0767] That is, when an abnormality occurs in a plurality of the power boards 100 , 200 , 300 , and 400 , the supply board 500 may supply the DC power to the load 20 of the power board where the abnormality occurs through the bus line 1 .

[0768] When the DC power is supplied to the abnormal power board, the supply board 500 can select any one of the more than one first power conversion devices 510 to convert the DC power according to the status of more than one power supply source 10, and transmit the DC power to the bus line 1 through the selected converter.

[0769] That is, when the DC power is supplied to the abnormal power board, the supply board 500 can transmit the DC power to the bus line 1 through a converter selected according to the status of one or more of the power supply sources 10, thereby supplying the DC power to the abnormal power board.

[0770] For example, when the ratings of the system power supply G and the bypass power supply P in one or more of the power supply sources 10 that supply power to the supply board 500 are lower than the standard ratings, the 2nd-5th conversion device 510#2 corresponding to the battery power supply B can be selected to supply the DC power through the battery power supply B, and the power received from the battery power supply B is converted into the DC power through the selected 2nd-5th conversion device 510#2 and transmitted to the bus line 1.

[0771] When an abnormality occurs in the supply board 500 , the control device 600 can control to close the circuit breaker of the power board closest to the abnormality-occurring power board, so that the abnormality-occurring power board receives the DC power from the adjacent power board through the bus line 1 .

[0772] That is, when an abnormality occurs in the supply board 500 that supplies the DC power to the abnormal power board, causing the supply board 500 to be unable to supply the DC power to the abnormal power board, the control device 600 can control to close the circuit breakers 130, 230, 330 and 430 of the abnormal power board and the power board closest to the abnormal power board, so that the abnormal power board receives the DC power from the adjacent power board through the bus line 1.

[0773] For example, when the conversion device 110 of the first power board 100 and the supply board 500 of the plurality of the power boards 100, 200, 300 and 400 fail, the circuit breakers 130 and 230 of each of the first power board 100 and the second power board 200 can be controlled to close the circuit, cut off more than one of the first power conversion devices 110, 210, 310 and 410 of the first power board 100, and transmit the control instruction of supplying the DC power converted by any one of the more than one first power conversion devices 210 of the second power board 200 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1 to the control board 500. Each of the first power board 100 and the second power board 200 supplies the DC power converted by any one conversion device 210 of the second power board 200 closest to the first power board 100 to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1, thereby controlling to close the circuit breakers 130 and 230 of each of the first power board 100 and the second power board 200, and any one of more than one first power conversion devices 210 of the second power board 200 supplies the DC power to the second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1.

[0774] When there are multiple abnormal power boards, the control device 600 can control to close one or more circuit breakers 130, 230, 330, 430 and 530 in the supply board 500 and the power board closest to the abnormal power board according to the abnormal state of each abnormal power board, so that each abnormal power board receives the DC power from the supply board 500 and one or more of the adjacent power boards through the bus line 1.

[0775] That is, when there are multiple abnormal power boards, the control device 600 can control the supply board 500 and one or more of the adjacent power boards to supply the DC power to each abnormal power board according to the abnormal state of each abnormal power board.

[0776] For example, when more than one of the first power conversion devices 110, 210, 310 and 410 in the first power board 100 is abnormal, and a part of the second power conversion devices 220 in the second power board 200 is temporarily interrupted, the control device 600 can determine that the abnormal state of the first power board 100 is more serious than the abnormal state of the second power board 200, thereby performing closed-circuit control on the first and fifth circuit breakers 130 and 530, so that the supply board 500 supplies the DC power to the first power board 100, and the second circuit breaker 230 and the third circuit breaker 330 are closed-circuit controlled so that the third power board 300 supplies the DC power to the second power board 200, so as to restore the operation of the first power board 100 through the supply board 500, and maintain the operation of the second power board 200 through the third power board 300 adjacent to the second power board 200.

[0777] As described above, when an abnormality occurs in any one or more of the power boards 100, 200, 300 and 400, control is performed to receive the DC power from the supply board 500 through the bus line 1, so that the supply board 500 can perform UPS function on each of the multiple power boards 100, 200, 300 and 400.

[0778] Therefore, in the power supply system 1000, even when unexpected abnormalities occur in one or more of the power supply sources 10, the plurality of power boards 100, 200, 300 and 400, and the load 20, the driving power can be continuously supplied to the load 20, thereby maintaining the operation of the load 20 without interruption, and the power supply can be appropriately and proactively responded to the occurrence of the abnormality, thereby stably performing the operation of the load 20 and the control of the power supply system 1000 regardless of the type and degree of the abnormality.

[0779] The operation example of the power supply system 1000 described above can be as follows Figures 13 to 16 Execute as shown.

[0780] like Figures 13 to 16 The operating example shown is an operating example when the power supply system 1000 includes four power boards 100, 200, 300 and 400 and one supply board 500. The power supply system 1000 may also include less than five or more than five of the power boards 100, 200, 300 and 400, and may include multiple supply boards 500.

[0781] The preferred embodiment of the power supply system 1000 can be as follows Figures 13 to 16The embodiment shown in FIG. 1 includes four power boards 100, 200, 300 and 400 and a supply board 500. In the following, the power boards 100, 200, 300 and 400 and the supply board 500 are described as follows. Figures 13 to 16 As shown, the case where there are four and one respectively is described as an example.

[0782] Fig.13 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the system power supply G in one or more of the power supply sources 10. In this case, the power supply from the bypass power supply P and the battery power supply B is cut off, and 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.

[0783] like Fig.13 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.

[0784] Fig.14 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the bypass power supply P in one or more of the power supply sources 10. The situation where an abnormality occurs in the system power supply G may correspond to this situation. 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.

[0785] like Fig.14 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.

[0786] Fig.15 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the battery power supply B in one or more of the power supply sources 10. A situation where an abnormality occurs in the system power supply G and the bypass power supply P may correspond to this situation. 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.

[0787] like Fig.15The 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.

[0788] Fig.16 This is a situation where each of the multiple power boards 100, 200, 300 and 400 and the supply board 500 receives power from the emergency power supply A in one or more of the power supply sources 10. The situation where abnormalities occur in the system power supply G, the bypass power supply P and the battery power supply B can correspond to this situation. 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.

[0789] like Fig.16 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.

[0790] As described above, in the power supply system 1000, each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can receive power from the same power supply source to operate, or each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can also selectively receive power from any one of more than one power supply source 10 to operate.

[0791] 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 supply board 500 can receive power from the battery power supply B to operate.

[0792] In addition, each of the plurality of power boards 100 , 200 , 300 , and 400 and the supply board 500 may also receive power from more than one power supply source 10 to operate.

[0793] 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 second power conversion devices 220, 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 second power conversion devices 120, 220, 320 and 420 of the first power board 100 through the bus line 1.

[0794] In such an example case, the first circuit breaker 130 and the second circuit breaker 230 of each of the first power strip 100 and 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.

[0795] As described above, by each of the plurality of power boards 100, 200, 300 and 400 and the supply board 500 receiving power from more than one power supply source 10 to operate, power supply between the plurality of power boards 100, 200, 300 and 400 and the supply board 500 can be performed, that is, UPS functions between the plurality of power boards 100, 200, 300 and 400 and UPS functions of the supply board 500 can be performed.

[0796] The embodiments of the power supply system of the present invention described above can be applied to a power supply device, a power supply system, and an operating method of a power supply system that supplies / uses a DC power supply. In particular, it can be usefully applied to a DC UPS module and a power supply system having the module, and can also be applied to and implemented in a motor control board, a motor control system, and a motor operation system for controlling a plurality of motor loads.

[0797] 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.

[0798] 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.

[0799] Description of Reference Numerals

[0800] 10: Power supply source 20: Load

[0801] 100 (200, 300 and 400): Power supply unit (power board)

[0802] 110 (210, 310, 410 and 510): first power conversion device (converter)

[0803] 120 (220, 320 and 420): second power conversion device (inverter)

[0804] 130 (230, 330, 430 and 530): Circuit breaker

[0805] 140 (240, 340 and 440): Control unit

[0806] 500: Supply board 600: Control device

[0807] 1000: Power supply system

Claims

1. A power supply system, characterized in that: include: a plurality of power boards for converting power received from one or more power supply sources into DC power, and converting the DC power into driving power for loads and supplying it to the loads; a DC circuit having one end connected to the other end to be connected to each power supply terminal inputting and outputting the DC power supply in each of the plurality of power supply boards, thereby switching on the DC power supply converted by the plurality of power supply boards; and A plurality of circuit breakers are respectively arranged between the power supply terminals on the DC circuit to connect or disconnect the two power supply terminals connected to the circuit where the plurality of circuit breakers are located. One or more of the power supply sources include a first alternating current power source and a second alternating current power source for supplying AC power, The plurality of circuit breakers are switched on and off according to the power supply status of at least one of the plurality of power boards, thereby connecting or limiting the DC power between the plurality of power boards. Wherein, when the power supply of at least one of the plurality of power boards is interrupted, at least one of the circuit breakers connected to the power end of the power board whose power supply is interrupted becomes closed, so that at least one of the power ends on both sides of the power end of the interrupted power board is connected to the power end of the interrupted power board, Each of the plurality of power boards comprises: one or more first power conversion devices, converting power received from one or more of the power supply sources into the DC power; and a second power conversion device that converts the DC power received from one or more of the first power conversion devices into the driving power and supplies it to the load, The power supply terminal of each of the plurality of power supply boards is a node connecting the output terminal of at least one of the first power conversion devices and the input terminal of the second power conversion device.

2. The power supply system according to claim 1, characterized in that: One or more of the power supply sources also include: A battery power supply having DC power stored therein so that, in the event that power supply from the first AC power supply and the second AC power supply is interrupted, the stored power is supplied to the plurality of power strips while the power supply is switched and restored.

3. The power supply system according to claim 2, characterized in that: After the power supply is interrupted, the stored power of the battery power is uninterruptedly supplied to the plurality of power boards until the power supply is switched and restored.

4. The power supply system according to claim 2, characterized in that: One or more of the power supply sources further includes an emergency power supply, which supplies emergency generated power to the load when power supply from the first AC power supply, the second AC power supply, and the battery power supply is interrupted.

5. The power supply system according to claim 2, characterized in that: At the power supply end of each of the plurality of power supply boards, the output end of each of more than one of the first power conversion devices and the input end of each of the second power conversion devices are connected to a node.

6. The power supply system according to claim 5, characterized in that: The plurality of power boards supply the DC power to the second power conversion device through any one of the one or more first power conversion devices according to the state of the one or more power supply sources.

7. The power supply system according to claim 6, characterized in that: When power supply from a conversion device that supplies the DC power to the second power conversion device is interrupted, the plurality of power boards supply the DC power to the second power conversion device through conversion devices other than the conversion device.

8. The power supply system according to claim 7, characterized in that: During the period in which the conversion device is switched to the other conversion device, one or more of the first power conversion devices supplies the DC power to the second power conversion device via the conversion device receiving power from the battery power source.

9. The power supply system according to claim 2, characterized in that: In the plurality of power boards, one side power terminal connected to the DC circuit is connected to the other side power terminal so that the connection between the power terminals is continuous.

10. The power supply system according to claim 9, characterized in that: The connections between the power ends of the plurality of power boards are continuous, so that the connections between the plurality of power boards form a loop structure.

11. The power supply system according to claim 2, characterized in that: When the DC power source is connected between the plurality of power boards, the plurality of circuit breakers are closed, and when the DC power source is limited between the plurality of power boards, the plurality of circuit breakers are opened.

12. The power supply system according to claim 2, characterized in that: Among the plurality of circuit breakers, when the power supply to more than one of the plurality of power boards is interrupted, more than one circuit breakers arranged between the power board to which the power supply is interrupted and a power board adjacent to the interrupted power board become closed to connect the interrupted power board and the adjacent power board, so that the DC power is supplied from the adjacent power board to the interrupted power board.

13. The power supply system according to claim 12, characterized in that: After the power supply is interrupted, the interrupted power board is supplied with the DC power from the conversion device connected to the battery power until the turned-on DC power is supplied from the adjacent power board.

14. A power supply system, characterized in that: include: a plurality of power boards for converting power received from one or more power supply sources into DC power, and converting the converted DC power into driving power for loads and supplying it to the loads; a supply board that converts power received from one or more power supply sources into DC power and is disposed between any two of the plurality of power boards, so that when the supply board is connected to any one of the two power boards, the converted DC power is supplied to the connected power board; A DC circuit having one end connected to the other end and connected to a power supply terminal for inputting and outputting the DC power in each of the plurality of the power supply boards and the supply board, so as to switch on the DC power converted by the plurality of the power supply boards and the supply board; and A plurality of circuit breakers are respectively arranged between the power supply terminals on the DC circuit to connect or disconnect the two power supply terminals connected to the circuit where the plurality of circuit breakers are located, One or more of the power supply sources include a first alternating current power source and a second alternating current power source for supplying AC power, The plurality of circuit breakers are switched on and off according to the power supply status of at least one of the plurality of power boards, thereby connecting or limiting the DC power supply between each of the plurality of power boards and an adjacent power board or the supply board, Wherein, when the power supply of at least one of the plurality of power boards is interrupted, at least one of the circuit breakers connected to the power end of the interrupted power board becomes closed, so that at least one of the power ends on both sides of the power end of the interrupted power board is connected to the power end of the interrupted power board, so that the DC power is supplied from at least one of the adjacent power boards and the supply board to the power board whose power supply is interrupted, Each of the plurality of power boards comprises: one or more first power conversion devices, converting power received from one or more of the power supply sources into the DC power; and a second power conversion device that converts the DC power received from one or more of the first power conversion devices into the driving power and supplies it to the load, The power supply terminal of each of the plurality of power supply boards is a node connecting the output terminal of at least one of the first power conversion devices and the input terminal of the second power conversion device.

15. The power supply system according to claim 14, characterized in that: The power ends of the DC power supplies of the input and output of the plurality of power boards are respectively connected to the power ends of two adjacent power boards, or are respectively connected to the power ends of an adjacent power board and the power ends of the supply board, wherein the power end of the power board on one side is connected to the power end of the power board on the other side or the supply board, so that the connection between the power ends is continuous.

16. The power supply system according to claim 15, characterized in that: The connections between the power terminals of the plurality of power boards and the supply board are continuous, so that the connections between the plurality of power boards and the supply board form a loop structure.

17. The power supply system according to claim 14, characterized in that: The power supply source that supplies power to the supply board includes at least a battery power source.

18. The power supply system according to claim 17, characterized in that: The supply board includes one or more first power conversion devices for further receiving power from the first AC power source and the second AC power source, and converting power received from one or more of the power supply sources into the DC power source.

19. The power supply system according to claim 14, characterized in that: Among the plurality of the circuit breakers, when an abnormality occurs in a power board connected to the supply board among the plurality of the power boards, the circuit breaker arranged between the abnormality-occurring power board and the supply board becomes closed to connect the abnormality-occurring power board to the supply board, thereby allowing the DC power to be supplied from the supply board to the abnormality-occurring power board.

20. The power supply system according to claim 14, characterized in that: Among the plurality of circuit breakers, in the event that an abnormality occurs in a power board that is not adjacent to the supply board among the plurality of power boards, the circuit breakers respectively arranged between the power board where the abnormality occurs, the power board adjacent to the supply board, and the supply board are closed, so that the DC power is supplied from the adjacent power board to the power board where the abnormality occurs, and the DC power is supplied from the supply board to the adjacent power board.

21. A power supply system, characterized in that: include: a plurality of power boards for converting power received from one or more power supply sources into DC power, and converting the converted DC power into driving power for loads and supplying it to the loads; a supply board that converts power received from one or more power supply sources into DC power and supplies the converted DC power to a plurality of the power boards when the supply board is connected to the plurality of the power boards via a bus line; The bus line is connected to the power supply terminal of each of the plurality of power supply boards and the power supply terminal of the supply board, so as to switch on the DC power converted by the plurality of power supply boards and the supply board; as well as A plurality of circuit breakers are arranged between each of the power supply terminals and the bus line, and are switched on and off according to the power supply status of at least one of the plurality of power boards, thereby connecting or disconnecting each of the power supply terminals and the bus line, One or more of the power supply sources include a first alternating current power source and a second alternating current power source for supplying AC power, Among the plurality of circuit breakers, when the power supply to at least one of the plurality of power boards is interrupted, the circuit breakers connected to the other power boards except the power board to which the power supply is interrupted and at least one of the supply boards and the power board to which the power supply is interrupted are closed, thereby connecting the other power boards and at least one of the supply boards and the interrupted power board to the bus line, so that the DC power is connected from the other power boards and at least one of the supply boards to the power board to which the power supply is interrupted through the bus line, Each of the plurality of power boards comprises: one or more first power conversion devices, converting power received from one or more of the power supply sources into the DC power; as well as a second power conversion device that converts the DC power received from one or more of the first power conversion devices into the driving power and supplies it to the load, The power supply terminal of each of the plurality of power supply boards is a node connecting the output terminal of at least one of the first power conversion devices and the input terminal of the second power conversion device.

22. The power supply system according to claim 21, characterized in that: One or more of the power supply sources also include: a battery power supply having DC power stored therein so that, in the event that the power supply of the first AC power supply and the second AC power supply is interrupted, the stored power is supplied to the plurality of power strips while the power supply is switched and restored, After the power supply is interrupted, the stored power of the battery power is uninterruptedly supplied to the plurality of power boards until the power supply is switched and restored.

23. The power supply system according to claim 22, characterized in that: A power supply source that supplies power to the supply board includes at least the battery power source.

24. The power supply system according to claim 23, characterized in that: The supply board includes one or more first power conversion devices for further receiving power from the first AC power source and the second AC power source, and converting power received from one or more of the power supply sources into the DC power source.

25. The power supply system according to claim 22, characterized in that: The supply board is formed in plural, and each of the plural supply boards is connected to the bus line.

26. The power supply system according to claim 25, characterized in that: In the supply board, a supply target to be supplied with the DC power in the plurality of power supply boards is designated in advance for each of the plurality of supply boards, so that the DC power is supplied to the predetermined supply target.

27. The power supply system according to claim 22, characterized in that: The supply board is disposed at a position spaced within a prescribed distance from each of the plurality of power boards.

28. The power supply system according to claim 22, characterized in that: Among the plurality of circuit breakers, when the power supply to more than one power board among the plurality of power boards is interrupted, the circuit breaker connected to the interrupted power board, the circuit breaker connected to more than one power board among the other power boards, and the circuit breaker connected to the supply board become closed, so that the DC power is supplied from more than one power board among the other power boards and the supply board to the interrupted power board through the bus line.

29. The power supply system according to claim 28, characterized in that: After the power supply is interrupted, the interrupted power board is supplied with the DC power from the conversion device connected to the battery power until the turned-on DC power is supplied from the supply board.

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