Panama power supply and control method, controller and storage medium

Abstract

The application discloses a Panama power supply and a control method, a controller and a storage medium thereof, wherein the Panama power supply comprises a phase-shifting transformer and a rectifier module; the phase-shifting transformer comprises a primary winding connected with an alternating current (AC) interface and a plurality of secondary windings; the secondary windings are connected with a direct current (DC) interface through the rectifier module circuit; the rectifier module comprises a passive rectifier module and an active rectifier module; the passive rectifier module is used for converting AC into DC; the active rectifier module is used for converting AC flowing into the AC interface into DC and flowing to the DC interface or converting DC of the DC interface into AC and flowing to the AC interface according to the controller; meanwhile, the active rectifier module also has the functions of replacing the damaged passive rectifier module, improving current quality, compensating for AC reactive power, making the AC power factor 1 and improving the transformer operation efficiency, thereby improving the reliability, stability, current quality and operation efficiency of the Panama power supply.

Description

Technical Field

[0001] This application relates to the field of power supply and distribution technology, specifically to a Panamanian power supply and its control method, controller and storage medium. Background Technology

[0002] Currently, with the development of big data and cloud computing technologies, using data center power supply solutions has become the mainstream trend in related technology development. However, traditional data center power supply solutions have technical problems such as large floor space occupied by supporting facilities and low power distribution efficiency. To address this, a new IDC (Internet Data Center) power supply solution has been developed, which uses Panama Power to distribute power to data centers. Compared with traditional IDC power supply solutions, Panama Power has higher power distribution efficiency and fewer devices. However, the energy flow direction of the existing Panama power supply circuit topology is uncontrollable, making it impossible for the existing Panama power supply to effectively utilize the power input from externally connected energy facilities. In addition, the current Panama power supply only solves the problem of AC input harmonics, but does not solve the problem of AC input reactive power, resulting in poor energy utilization efficiency and energy-saving and environmental protection efficiency of the existing Panama power supply. Furthermore, the uncontrollable energy flow of the Panama power supply affects the reliability and flexibility of the power supply. Summary of the Invention

[0003] The following is an overview of the topics described in detail in this article.

[0004] This application provides a Panama power supply and its control method, controller, and storage medium. At least, it can ensure that the solution of this application uses a built-in active rectification module to convert the AC power flowing into the AC interface into DC power and flow to the DC interface, or to convert the DC power from the DC interface into AC power and flow to the AC interface, thereby realizing the controllability of the flow direction of Panama power supply energy and improving the reliability and stability of Panama power supply.

[0005] A first aspect of the present invention provides a Panama power supply, wherein the AC interface side of the Panama power supply is connected to an AC power source, and the DC interface side of the Panama power supply is connected to a DC module. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface through the rectifier module circuit. The rectifier module includes a passive rectifier module and an active rectifier module. The passive rectifier module is used to convert the AC power flowing into the AC interface into DC power and let it flow to the DC interface. The active rectifier module is used to convert the AC power flowing into the AC interface into DC power and let it flow to the DC interface, or to convert the DC power flowing into the DC interface into AC power and let it flow to the AC interface, according to the controller.

[0006] The Panama power supply according to embodiments of the present invention has at least the following beneficial effects: The Panama power supply of this application has an AC interface connected to an AC power source and a DC module connected to its DC interface. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface through the rectifier module circuit. The DC interface can connect to IT equipment, energy storage units, and new energy power generation equipment. The rectifier module includes a passive rectifier module and an active rectifier module. The passive rectifier module is used to convert the AC power flowing into the AC interface into DC power and flow to the DC interface. The active rectifier module, under the control of a controller, can convert the AC power flowing into the AC interface into DC power and flow to the DC interface, or convert the DC power from the DC interface into AC power and flow to the AC interface, allowing energy in the Panama power supply to flow bidirectionally. In addition, the active rectifier module of the Panama Power Supply has two other functions: 1) When the passive rectifier module fails, the active rectifier module can take over, improving the quality of AC current measurement. 2) The active rectifier module can compensate for AC reactive power, making the AC power factor 1, thus improving the transformer operating efficiency. Therefore, the reliability, stability, current quality, and operating efficiency of the Panama Power Supply are all improved.

[0007] In some embodiments, the secondary winding includes a uniform phase-shifting winding and any phase-shifting winding. The uniform phase-shifting winding is connected to the passive rectification module, and the any phase-shifting winding is connected to the active rectification module. The phase-shifting angles of the multiple uniform phase-shifting windings are uniformly distributed within a preset angle. The active rectification module is used to output a preset harmonic corresponding to the target uniform phase-shifting winding under the control of the controller, so that the phase-shifting waveform output by the any phase-shifting winding is the same as the phase-shifting waveform of the target uniform phase-shifting winding.

[0008] In some embodiments, the AC power source is a 10kV power grid, and the DC module includes a DC load, an energy storage unit, and a new energy unit. The 10kV power grid supplies power to the DC load through the passive rectifier module and the active rectifier module, and the energy storage unit and the new energy unit transmit power to the 10kV power grid through the active rectifier module.

[0009] In some embodiments, the Panama power supply further includes a smoothing capacitor connected in parallel with the DC interface of the Panama power supply. When the Panama power supply stops supplying power to the DC module, the active rectifier module is used to connect the smoothing capacitor and the AC power supply under the control of the controller, so that the charge energy on the smoothing capacitor flows to the AC power supply.

[0010] In some embodiments, the passive rectification module includes a plurality of diodes, and the active rectification module includes a PWM rectification circuit.

[0011] A second aspect of the present invention provides a control method for a Panama power supply, applied to a Panama power supply. The Panama power supply has an AC interface connected to an AC power source and a DC module connected to its DC interface. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface through the rectifier module circuit. The rectifier module includes a passive rectifier module and an active rectifier module. The control method includes: The passive rectifier module converts the AC power flowing into the AC interface into DC power, which then flows to the DC interface. The active rectifier module is controlled to convert AC power flowing into the AC interface into DC power and flow to the DC interface, or to convert DC power flowing into the DC interface into AC power and flow to the AC interface.

[0012] The control method for the Panama power supply according to embodiments of the present invention has at least the following beneficial effects: In the Panama power supply of this application, the passive rectifier module converts the AC power flowing into the AC interface into DC power and flows to the DC interface, and controls the active rectifier module to convert the AC power flowing into the AC interface into DC power and flow to the DC interface, or to convert the DC power of the DC interface into AC power and flow to the AC interface. The rectifier module includes a passive rectifier module and an active rectifier module, enabling bidirectional energy flow in the Panama power supply. Excess renewable energy capacity can be injected back into the grid, reducing curtailment of solar and wind power, and improving the reliability and stability of the Panama power supply.

[0013] In some embodiments, the secondary winding includes a uniform phase-shifting winding and any phase-shifting winding, the uniform phase-shifting winding is connected to the passive rectification module, and the any phase-shifting winding is connected to the active rectification module. The phase-shifting angles of the plurality of uniform phase-shifting windings are uniformly distributed within a preset angle. The method includes: The active rectifier module is controlled to output a preset harmonic corresponding to the target uniform phase-shifting winding, so that the phase-shifting waveform of the output of any phase-shifting winding is the same as the phase-shifting waveform of the target uniform phase-shifting winding.

[0014] In some embodiments, the Panama power supply further includes a smoothing capacitor connected in parallel with the DC interface of the Panama power supply, and the method includes: When the Panama power supply stops supplying power to the DC module, the active rectifier module is controlled to connect the smoothing capacitor to the AC power supply, so that the charge energy on the smoothing capacitor flows to the AC power supply.

[0015] An embodiment of the third aspect of the present invention provides a controller including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method for the Panama power supply as described in any of the embodiments of the second aspect above.

[0016] An embodiment of the fourth aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the control method of the Panama power supply as described in any of the embodiments of the second aspect above.

[0017] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] Figure 1 This is a circuit topology diagram of a Panama power supply with a uniform phase-shifting winding and any phase-shifting winding provided in another embodiment of the present invention; Figure 2 This is a circuit topology diagram of a passive rectifier module in a Panama power supply provided in another embodiment of the present invention; Figure 3 This is a circuit topology diagram of the active rectifier module in a Panama power supply provided in another embodiment of the present invention; Figure 4 This is a flowchart of the steps of a control method for a Panama power supply provided in another embodiment of the present invention; Figure 5 This is a flowchart of another control method for a Panama power supply provided in another embodiment of the present invention; Figure 6 This is a flowchart of another control method for a Panama power supply provided in another embodiment of the present invention; Figure 7 This is a schematic diagram of the controller provided in an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various implementations. Simultaneously, the steps or actions in the method description can be rearranged or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various orders in the specification and drawings are merely for the clear description of a particular embodiment and do not imply a mandatory order, unless otherwise stated that a particular order must be followed.

[0020] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] In related technologies, with the development of big data and cloud computing technologies, the use of data center power supply solutions has become the mainstream trend in related technology development. However, traditional data center power supply solutions have technical problems such as large area occupied by supporting facilities and low power distribution efficiency. To address this, a new IDC (Internet Data Center) power supply solution has been developed, which uses Panama Power to distribute power to data centers. Compared with traditional IDC power supply solutions, Panama Power has higher power distribution efficiency and fewer devices. However, the existing circuit topology of the Panama power supply only supports the fact that the direction of energy flow within the Panama power supply cannot be controlled. This prevents the existing Panama power supply from effectively utilizing the power input from externally connected energy facilities, resulting in poor energy utilization efficiency and energy-saving and environmental protection efficiency. Furthermore, the uncontrollable energy flow of the Panama power supply affects the reliability and stability of the power supply.

[0024] Based on the above, embodiments of the present invention provide a Panama power supply and its control method, controller, and storage medium. The Panama power supply has at least the following beneficial effects: The Panama power supply of this application has an AC interface connected to an AC power source and a DC module connected to its DC interface. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface through the rectifier module lines. The rectifier module includes a passive rectifier module and an active rectifier module. The passive rectifier module is used to convert the AC power flowing into the AC interface into DC power and flow to the DC interface. The active rectifier module is used to convert the AC power flowing into the AC interface into DC power and flow to the DC interface according to the controller, or to convert the DC power from the DC interface into AC power and flow to the AC interface. This allows energy to flow bidirectionally in the Panama power supply, enabling excess renewable energy capacity to be injected back into the grid, reducing curtailment of solar and wind power, achieving controllability of the energy flow direction in the Panama power supply, and improving the reliability and stability of the Panama power supply.

[0025] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, Figure 1 This is a schematic diagram of a Panama power supply provided in an embodiment of the present invention. In the first aspect of this application, a Panama power supply is provided, wherein an AC power source is connected to the AC interface side of the Panama power supply, and a DC module is connected to the DC interface side of the Panama power supply. The Panama power supply includes a phase-shifting transformer and a rectifier module. A phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to an AC interface, and the secondary windings are connected to a DC interface through a rectifier module. The rectifier module includes a passive rectifier module and an active rectifier module. The passive rectifier module is used to convert the AC power flowing into the AC interface into DC power and let it flow to the DC interface. The active rectifier module is used to convert the AC power flowing into the AC interface into DC power and let it flow to the DC interface, or to convert the DC power flowing into the DC interface into AC power and let it flow to the AC interface, according to the controller.

[0027] In some embodiments, reference Figure 1The primary winding U1 of the phase-shifting transformer is connected to the AC power supply on the AC interface side of Panama Power Supply through three-phase lines including live wire, neutral wire and ground wire. Multiple secondary windings (W1 to WM) of the phase-shifting transformer are connected to one end of the rectifier module. The other end of the rectifier module is connected to the DC interface. The DC interface is used to output the mainstream power rectified by the rectifier module. A DC module is connected to the DC interface. The DC module is a power facility that inputs or outputs DC power, including but not limited to DC loads, energy storage units and new energy units.

[0028] In some embodiments, the phase-shifting transformer includes a primary winding and multiple secondary windings, which reduces the short-circuit current of the transformer's secondary windings and keeps the short-circuit current capacity of its downstream switches within a safe range. The secondary windings are connected to the DC interface through the rectifier module line. Compared with the distribution hierarchy of the traditional power supply architecture, this shortens the long link from the transformer output to the ACUPS or 240V / 336VHVDC cabinet, simplifies the multi-level distribution structure in the distribution link, and substantially reduces the number of switching devices in the Panama power supply link. While reducing costs, it makes the power distribution mechanism simpler and more efficient.

[0029] In some embodiments, Panama Power is a new generation of DC power supply product specifically designed to address the DC power supply needs of data centers for internet companies and basic telecommunications operators. It can accelerate construction cycles, reduce footprint, improve data center power supply efficiency, and reduce total investment costs in power supply and distribution. However, existing Panama Power rectifier modules only support the conversion of AC power flowing into the AC interface to DC power, enabling AC power to supply DC modules. This means that Panama Power has a non-bidirectional energy flow characteristic; energy cannot flow from the DC interface to the AC interface. Furthermore, when the DC module includes energy storage units and new energy units in addition to the DC load, the energy storage unit... The DC power generated by the energy in the energy storage and new energy units cannot flow to the AC power source through the rectifier module. The stored energy and new energy in the energy storage and new energy units can only be wasted due to solar or wind power curtailment, resulting in energy loss. This leads to poor energy utilization efficiency and energy conservation and environmental protection efficiency of the existing Panama Power. The active rectifier module in this application is used to convert the AC power flowing into the AC interface into DC power and flow to the DC interface according to the controller, or to convert the DC power in the DC interface into AC power and flow to the AC interface. When the Panama Power stops supplying power to the DC module, the energy of the energy storage and new energy units is recovered through the active rectifier module and injected into the AC power source, reducing energy loss.

[0030] In some embodiments, the rectifier module includes a passive rectifier module and an active rectifier module. The DC outputs of all rectifier modules are connected in parallel to form a DC interface, which is connected to the DC module. Compared with the rectifier modules in the prior art, the passive rectifier module can only passively make electrical energy flow from the AC interface to the DC interface. The active rectifier module enables the bidirectional flow of electrical energy in the power supply system. Excess electrical energy generated by new energy sources can be injected back into the grid, improving the utilization efficiency of new energy sources such as wind power or photovoltaic power generation.

[0031] In some embodiments, the Panama Power Supply also includes an integrated monitoring module, which acts as the controller of the Panama Power Supply. The integrated monitoring module manages the rectifier module via a CAN bus and manages other units besides the rectifier module via an RS-485 bus. The integrated monitoring module is used to monitor real-time voltage and operating status of various switches in the Panama Power Supply and control the operation of the Panama Power Supply.

[0032] In some embodiments, in a power supply scheme using Panama Power, the entire power supply system includes facilities such as a medium-voltage cabinet, an incoming line cabinet, a phase-shifting transformer cabinet, a rectifier cabinet, and an output cabinet. The phase-shifting transformer cabinet and the rectifier cabinet are used to store the phase-shifting transformer and the rectifier module, respectively.

[0033] In some embodiments, energy in the Panama power supply of this application can flow bidirectionally. Additionally, the active rectifier module of the Panama power supply has two functions: 1) When the passive rectifier module fails, the active rectifier module can serve as a replacement, improving the quality of AC current measurement. 2) The active rectifier module can compensate for AC reactive power, making the AC power factor 1, thus improving the transformer's operating efficiency. Therefore, the reliability, stability, current quality, and operating efficiency of the Panama power supply are all improved.

[0034] like Figure 1 As shown, Figure 1 This is a circuit topology diagram of a Panama power supply with a uniform phase-shifting winding and any phase-shifting winding provided by another embodiment of the present invention. In some embodiments, the secondary winding includes a uniform phase-shifting winding and any phase-shifting winding. The uniform phase-shifting winding is connected to a passive rectification module, and the any phase-shifting winding is connected to an active rectification module. The phase-shifting angles of the multiple uniform phase-shifting windings are uniformly distributed within a preset angle. The active rectification module is used to output a preset harmonic corresponding to the target uniform phase-shifting winding under the control of the controller, so that the phase-shifting waveform of the output of any phase-shifting winding is the same as the phase-shifting waveform of the target uniform phase-shifting winding.

[0035] Among them, reference Figure 1The secondary windings W1 to WM are multiple uniform phase-shifting windings, and the secondary windings WN-1 to WN are multiple arbitrary phase-shifting windings. The preset angle is set to 60 degrees. If the number of uniform phase-shifting windings is M, then the phase-shifting angle between adjacent uniform phase-shifting windings is (60 / M) degrees, and the number of arbitrary phase-shifting windings is NM (NM>1), that is, the number of arbitrary phase-shifting windings is at least two.

[0036] In some embodiments, reference Figure 1 The AC power source is a 10kV grid. The DC module includes a DC load, an energy storage unit, and a new energy unit. The 10kV grid supplies power to the DC load through a passive rectifier module and an active rectifier module. The energy storage unit and the new energy unit transmit power to the 10kV grid through an active rectifier module. When the load corresponding to the energy storage unit and the new energy unit is relatively small (less than the new energy generation power, and the energy storage unit is fully charged), if the energy from the Panama power source cannot flow bidirectionally, it will lead to the curtailment of solar or wind power, resulting in energy loss. Therefore, the rectifier module of this application includes passive and active rectifier modules to enable bidirectional energy flow. Excess new energy capacity can be injected back into the grid, reducing the occurrence of solar and wind curtailment and improving energy utilization efficiency.

[0037] In some embodiments, the Panama Power Supply of this application flexibly integrates the power distribution, isolation transformer, modular rectifier and output power distribution of a 10kV power grid, uses a phase-shifting transformer to replace the power frequency transformer, and optimizes and integrates the entire power supply link from 10kVac to 240Vdc, resulting in higher power distribution efficiency and fewer devices.

[0038] In some embodiments, during practical applications, when a secondary side of a rectifier module or phase-shifting transformer is damaged, one phase shift will be lost, resulting in phase loss, increased input current distortion, and decreased current quality. Since the complete waveform of the sinusoidal current needs to be obtained through multiple uniform phase-shifting windings during power distribution, but when some windings of the multiple uniform phase-shifting windings cannot work normally, the complete waveform of the sinusoidal current will be affected and incomplete. Therefore, this application outputs the harmonics corresponding to the incomplete part of the sinusoidal current through the active rectifier module in this application, that is, the harmonics corresponding to the uniform phase-shifting windings that cannot work normally. This harmonic is transmitted to any phase-shifting winding and will change the phase-shifting waveform of the output of any phase-shifting winding, so that any phase-shifting winding replaces the uniform phase-shifting winding that cannot work normally and outputs the corresponding phase-shifting waveform, thus restoring the complete waveform of the sinusoidal current, ensuring the normal power supply state of the Panama power supply, keeping the input current quality unchanged, and improving the reliability and stability of the Panama power supply.

[0039] Specifically, for example, if there are multiple uniform phase-shifting windings, the more uniform phase-shifting windings there are, the more complete the waveform of the sinusoidal current will be. In this case, there are four uniform phase-shifting windings. When one uniform phase-shifting winding fails to work properly, the waveform of the sinusoidal current will be missing a quarter, resulting in a less complete sinusoidal current waveform than that obtained from three normally functioning uniform phase-shifting windings. However, the traditional solution already obtains the sinusoidal current waveform based on four uniform phase-shifting windings. If one uniform phase-shifting winding fails to work properly, the other three uniform phase-shifting windings cannot change their phase-shifting angle. Therefore, this application proposes any phase-shifting winding and an active rectification module. The active rectification module obtains a preset harmonic based on the missing part of the sinusoidal current waveform, so that any phase-shifting winding can replace the uniform phase-shifting winding that fails to work properly, thereby "filling in" the damaged phase-shifting waveform and improving the reliability and stability of the Panama power supply.

[0040] Specifically, the aforementioned "filling in" process can be likened to multiple painters drawing a circle. The painters are used to draw the sides of a polygon, and the complete waveform of the sinusoidal current is the circle we want. The process progresses from a regular hexagon to a regular dodecagon, and then to a regular 24-sided polygon, gradually approaching a circle. Assuming a painter can draw 6 sides of a polygon, when drawing a regular 24-sided polygon, removing 6 sides (if one painter is faulty) and replacing them with a straight line will result in a polygon that deviates significantly from a circle. Even a polygon with 19 sides from a faulty painter (or 18 sides plus a straight line drawn by three normally functioning painters) is less close to a circle than a regular 18-sided polygon. However, in traditional solutions, the positions have already been drawn as regular 24-sided polygons. If one painter (secondary side) is damaged, the other painters (secondary sides) cannot be repositioned (phase shift angle) to form a regular polygon. Therefore, this application can fill in the missing 6 regular sides using an active painter (any phase shift winding and active rectification module) to make the polygon closer to a circle. This example is only used to illustrate the corresponding process in this application and does not constitute a limitation on this application.

[0041] In some embodiments, the controller of the Panama power supply stores the corresponding harmonic control data when each uniform phase-shifting winding fails to work properly. Then, when the active rectifier module needs to output the corresponding harmonic to "compensate" for the damaged phase-shifting waveform, the controller can obtain the specific data of the uniform phase-shifting winding that fails to work properly by monitoring the uniform phase-shifting winding or monitoring the sinusoidal current waveform, thereby obtaining the corresponding harmonic control data, and controlling the active rectifier module to output the corresponding harmonic according to the harmonic control data, so as to ensure the normal power supply state of the Panama power supply.

[0042] In some embodiments, since the waveform phase shifting function is undertaken by the passive rectification module and the active rectification module does not participate in waveform phase shifting, whether the active rectification module is damaged or not will not affect the phase shifting result of the passive rectification module. That is, under the normal working condition of the uniform phase shifting module, the working state of any phase shifting winding and the active rectification module will not affect the normal power supply of the Panama power supply, which can further improve the reliability of the Panama power supply.

[0043] In some embodiments, reference Figure 2 The Panama power supply also includes a smoothing capacitor connected in parallel with the DC interface of the Panama power supply. When the Panama power supply stops supplying power to the DC module, the active rectification module is used to connect the smoothing capacitor to the AC power supply under the control of the controller, so that the charge energy on the smoothing capacitor flows to the AC power supply. During the power supply process of the Panama power supply, in order to stabilize the DC output, a smoothing capacitor is connected in parallel at the DC output port. The smoothing capacitor will accumulate charge. When the DC power supply stops working, an auxiliary circuit is required to discharge and consume the charge energy stored in the capacitor, which increases cost and size. Therefore, in this application, when the DC power supply stops working, the energy of the smoothing capacitor can be recovered and injected into the grid through the active rectification module, eliminating the need for an auxiliary circuit and reducing cost and energy loss.

[0044] In some embodiments, the passive rectifier module includes multiple diodes, and the active rectifier module includes a PWM rectifier circuit. The PWM rectifier circuit is composed of fully controllable power switching devices and adopts a pulse width modulation control method, which can realize bidirectional power conversion.

[0045] like Figure 2 As shown, Figure 2 This is a circuit topology diagram of a passive rectifier module in a Panama power supply according to another embodiment of the present invention, wherein the passive rectifier module consists of 6 diodes (corresponding to...). Figure 3 The AC live wires (D1 to D6) are connected to the positive terminals of diodes D1 and D2, respectively. The negative terminal of diode D1 is connected to the positive terminal of the DC interface, and the positive terminal of diode D2 is connected to the negative terminal of the DC interface. The AC neutral wires are connected to the positive terminals of diodes D3 and D4, respectively. The negative terminal of diode D3 is connected to the positive terminal of the DC interface, and the positive terminal of diode D4 is connected to the negative terminal of the DC interface. The AC ground wires are connected to the positive terminals of diodes D5 and D6, respectively. The negative terminal of diode D5 is connected to the positive terminal of the DC interface, and the positive terminal of diode D6 is connected to the negative terminal of the DC interface. This process converts the three-phase AC input into DC.

[0046] like Figure 3 As shown, Figure 3 This is a circuit topology diagram of the active rectifier module in a Panama power supply according to another embodiment of the present invention, wherein the passive rectifier module consists of 6 switching transistors (corresponding to...). Figure 3 The AC live wires (S1 to S6) are connected to the first terminal of switch S1 and the second terminal of switch S2, respectively. The second terminal of switch S1 is connected to the positive terminal of the DC interface, and the first terminal of switch S2 is connected to the negative terminal of the DC interface. The AC neutral wires are connected to the first terminal of switch S3 and the second terminal of switch S4, respectively. The second terminal of switch S3 is connected to the positive terminal of the DC interface, and the first terminal of switch S4 is connected to the negative terminal of the DC interface. The AC ground wires are connected to the first terminal of switch S5 and the second terminal of switch S6, respectively. The second terminal of switch S5 is connected to the positive terminal of the DC interface, and the first terminal of switch S6 is connected to the negative terminal of the DC interface. This process converts the AC power input from the three-phase lines into DC power.

[0047] like Figure 4 As shown, Figure 4 This is a flowchart of the steps of a control method for a Panama power supply provided in another embodiment of the present invention. In an embodiment of the second aspect of this application, a control method for a Panama power supply is provided, which is applied to a Panama power supply. The AC interface side of the Panama power supply is connected to an AC power source, and the DC interface side of the Panama power supply is connected to a DC module. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface through the rectifier module lines. The rectifier module includes a passive rectifier module and an active rectifier module. The control method includes, but is not limited to, the following steps S410 to S420. Step S410: The AC power flowing into the AC interface is converted into DC power by the passive rectifier module and flows to the DC interface. Step S420: Control the active rectifier module to convert the AC power flowing into the AC interface into DC power and flow to the DC interface, or convert the DC power from the DC interface into AC power and flow to the AC interface.

[0048] like Figure 5 As shown, Figure 5 This is a flowchart of another control method for a Panama power supply provided in another embodiment of the present invention. The secondary winding includes a uniform phase-shifting winding and any phase-shifting winding. The uniform phase-shifting winding is connected to a passive rectifier module, and any phase-shifting winding is connected to an active rectifier module. The phase-shifting angles of the multiple uniform phase-shifting windings are uniformly distributed within a preset angle. The control method includes, but is not limited to, the following steps S510. Step S510: Control the active rectifier module to output a preset harmonic corresponding to the target uniform phase-shifting winding, so that the phase-shifting waveform of the output of any phase-shifting winding is the same as the phase-shifting waveform of the target uniform phase-shifting winding.

[0049] like Figure 6 As shown, Figure 6This is a flowchart of another control method for a Panama power supply provided in another embodiment of the present invention. The Panama power supply also includes a smoothing capacitor connected in parallel with the DC interface of the Panama power supply. The control method includes, but is not limited to, the following steps S710. In step S610, when the Panama power supply stops supplying power to the DC module, the active rectifier module is controlled to connect the smoothing capacitor to the AC power supply so that the charge energy on the smoothing capacitor flows to the AC power supply.

[0050] like Figure 7 As shown, Figure 7 This is a schematic diagram of the controller provided in an embodiment of the present invention.

[0051] Some embodiments of the present invention provide a controller, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method for the Panama power supply of any of the above embodiments, for example, performing the above-described... Figure 4 Method steps S410 to S420 Figure 5 Method steps S510, Figure 6 Method step S610.

[0052] The controller 700 of this embodiment includes one or more processors 701 and a memory 702. Figure 7 The example uses a processor 701 and a memory 702.

[0053] The processor 701 and the memory 702 can be connected via a bus or other means. Figure 7 Taking the example of a connection between China and Israel via a bus.

[0054] Memory 702, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 702 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 702 may optionally include memory 702 remotely located relative to processor 701. These remote memories can be connected to controller 700 via a network, and examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0055] In some embodiments, when the processor executes a computer program, it executes the control method of the Panama power supply according to any of the above embodiments at preset intervals.

[0056] Those skilled in the art will understand that Figure 7The device structure shown does not constitute a limitation on the controller 700 and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0057] exist Figure 7 In the controller 700 shown, the processor 701 can be used to call the Panama Power program stored in the memory 702, thereby implementing the control method of the Panama Power.

[0058] Based on the hardware structure of the controller 700 described above, various embodiments of the Panama power supply of the present invention are proposed.

[0059] The non-transient software program and instructions required to implement the control method of the Panama power supply in the above embodiments are stored in memory. When executed by the processor, the control method of the Panama power supply in the above embodiments is executed.

[0060] Furthermore, embodiments of the present invention also provide a Panama power system, which includes the controller described above.

[0061] In some embodiments, since the Panama power system of the present invention has the controller of the above embodiments, and the controller of the above embodiments is capable of executing the control method of the Panama power system of the above embodiments, the specific implementation and technical effects of the Panama power system of the present invention can refer to the specific implementation and technical effects of the control method of the Panama power system of any of the above embodiments.

[0062] This invention also provides a computer-readable storage medium storing computer-executable instructions for performing the aforementioned Panama power supply control method. For example, the computer-executable instructions can cause one or more processors to perform the Panama power supply control method described above, such as executing the above-described control method. Figure 4 Method steps S410 to S420 Figure 5 Method steps S510, Figure 6 Method step S610.

[0063] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network nodes. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0064] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer-readable storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer-readable storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0065] The above is a detailed description of the preferred embodiments of this application. However, this application is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A Panama power supply, characterized in that, The Panama power supply has an AC interface connected to an AC power source and a DC module connected to its DC interface. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface through the rectifier module circuit. The rectifier module includes multiple passive rectifier modules and multiple active rectifier modules. The DC outputs of all the passive rectifier modules and all the active rectifier modules are connected in parallel to form the DC interface. The passive rectifier modules are used to convert the AC current flowing into the AC interface into DC current and direct it to the DC interface. The secondary winding includes multiple uniform phase-shifting windings and multiple arbitrary phase-shifting windings. The uniform phase-shifting windings are connected to the passive rectifier modules, and the arbitrary phase-shifting windings are connected to the active rectifier modules. The phase shift angles of the multiple uniform phase-shifting windings are evenly distributed within a preset angle. The active rectifier module is used for... When some of the passive rectifier modules or some of the uniform phase-shifting windings fail to function properly, the controller converts the AC power flowing into the AC interface into DC power and directs it to the DC interface. Under the control of the controller, a preset harmonic corresponding to the malfunctioning passive rectifier module or the uniform phase-shifting winding is output, so that the phase-shifting waveform output by any phase-shifting winding is the same as the phase-shifting waveform of the malfunctioning passive rectifier module or the uniform phase-shifting winding. Alternatively, when the Panama power supply stops supplying power to the DC module, the DC power at the DC interface is converted into AC power and directs it to the AC interface.

2. The Panama power supply according to claim 1, characterized in that, The AC power source is a 10kV power grid. The DC module includes a DC load, an energy storage unit, and a new energy unit. The 10kV power grid supplies power to the DC load through the passive rectifier module and the active rectifier module. The energy storage unit and the new energy unit transmit power to the 10kV power grid through the active rectifier module.

3. The Panama power supply according to claim 1, characterized in that, The Panama power supply also includes a smoothing capacitor connected in parallel with the DC interface of the Panama power supply. When the Panama power supply stops supplying power to the DC module, the active rectifier module is used to connect the smoothing capacitor and the AC power supply under the control of the controller, so that the charge energy on the smoothing capacitor flows to the AC power supply.

4. The Panama power supply according to any one of claims 1 to 3, characterized in that, The passive rectification module includes multiple diodes, and the active rectification module includes a PWM rectification circuit.

5. A control method for a Panama power supply, applied to a Panama power supply, characterized in that, The Panama power supply has an AC interface connected to an AC power source and a DC interface connected to a DC module. The Panama power supply includes a phase-shifting transformer and a rectifier module. The phase-shifting transformer includes a primary winding and multiple secondary windings. The primary winding is connected to the AC interface, and the secondary windings are connected to the DC interface via the rectifier module. The rectifier module includes multiple passive rectifier modules and multiple active rectifier modules. The secondary windings include multiple uniformly phase-shifting windings and multiple randomly phase-shifting windings. The uniformly phase-shifting windings are connected to the passive rectifier modules, and the randomly phase-shifting windings are connected to the active rectifier module. The phase-shifting angles of the multiple uniformly phase-shifting windings are uniformly distributed within a preset angle. The control method includes: The passive rectifier module converts the AC power flowing into the AC interface into DC power, which then flows to the DC interface. When some of the passive rectifier modules or some of the uniform phase-shifting windings fail to function properly, the active rectifier module converts the AC power flowing into the AC interface into DC power and directs it to the DC interface. It outputs a preset harmonic corresponding to the malfunctioning passive rectifier module or the uniform phase-shifting winding, ensuring that the phase-shifting waveform output by any phase-shifting winding is the same as that of the malfunctioning passive rectifier module or the uniform phase-shifting winding. Alternatively, when the Panama power supply stops supplying power to the DC module, the active rectifier module converts the DC power at the DC interface into AC power and directs it to the AC interface.

6. The control method for the Panama power supply according to claim 5, characterized in that, The Panama power supply further includes a smoothing capacitor connected in parallel with the DC interface of the Panama power supply. The method includes: When the Panama power supply stops supplying power to the DC module, the active rectifier module is controlled to connect the smoothing capacitor to the AC power supply, so that the charge energy on the smoothing capacitor flows to the AC power supply.

7. A controller, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the control method for the Panama power supply as described in any one of claims 5 to 6.

8. A computer-readable storage medium, characterized in that, The device stores computer-executable instructions for performing the control method for the Panama power supply as described in any one of claims 5 to 6.

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