Test platform for power module of energy storage converter

Abstract

The utility model relates to the technical field of converter testing, particularly provides a test platform for a power module of an energy storage converter, and aims to solve the problem that a platform for independently testing the power module of the energy storage converter is lacked in the prior art. In order to achieve the purpose, the test platform of the energy storage converter power module comprises a test controller, an alternating-current power source and a direct-current power source, the test controller is used for receiving a test instruction and sending the test instruction to the power module, and the alternating-current end and the direct-current end of the power module are connected with the alternating-current power source and the direct-current power source respectively. And the power module performs charging and discharging test based on the test instruction, the AC power supply and the DC power supply, and feeds back a test result to the test controller. The purpose of testing the power module in the energy storage converter is achieved, the performance of the power module before the energy storage converter is put into use is guaranteed, the failure rate of the power module in the whole energy storage converter is reduced, and the problem that a power module testing platform is lacked is solved.

Description

Technical Field

[0001] This application relates to the technical field of converter testing, and particularly to a test platform for a power module of an energy storage converter. Background Art

[0002] An energy storage converter (Power Conversion System, PCS) is a device used to control the charging and discharging processes of a storage battery and achieve AC-DC conversion, and is an important power electronic device. An energy storage converter (also known as a bidirectional energy storage inverter) generally includes a DC capacitor, a reactor, an AC circuit breaker, a DC load switch, IGBTs, a cooling fan, a power module, etc. Among them, the power module is the core component of the energy storage converter, responsible for rectification and inversion. Currently, the testing of energy storage converters is usually carried out as a whole-machine test, lacking a platform for separately testing its power modules.

[0003] Correspondingly, there is a need in the art for a new test solution for the power module of an energy storage converter to solve the above problems. Utility Model Content

[0004] In order to overcome the above defects, this application is proposed to solve or at least partially solve the problem in the prior art of lacking a platform for separately testing the power module of an energy storage converter.

[0005] In a first aspect, a test platform for a power module of an energy storage converter is provided. The platform includes: a test controller, an AC power supply, and a DC power supply. The test controller is configured to receive a test instruction, send the test instruction to the power module, and the AC terminal and DC terminal of the power module are respectively connected to the AC power supply and the DC power supply. The power module performs charge and discharge tests based on the test instruction, the AC power supply, and the DC power supply, and feeds back the test results to the test controller.

[0006] In a technical solution of the above test platform for a power module of an energy storage converter, it further includes: a current transformer and a voltage transformer. The current transformer is located between the AC power supply and the AC terminal of the power module, and is used to collect the current at the AC terminal of the power module. The voltage transformer is located between the AC power supply and the AC terminal of the power module, and is used to collect the voltage at the AC terminal of the power module.

[0007] In a technical solution of the above test platform for a power module of an energy storage converter, the DC power supply includes a storage battery, and the test platform further includes: a transformer, which is used to convert the voltage of the AC power supply into the rated voltage of the power module.

[0008] In a technical solution of the above test platform for the power module of the energy storage converter, the test controller is connected to the power module through an optical fiber. The test controller further includes a control chip, a data receiving end, and a data sending end. The control chip is configured to convert a test instruction into an optical pulse signal and send it to the power module through the data sending end, and receive the test result fed back by the power module through the data receiving end.

[0009] In a technical solution of the above test platform for the power module of the energy storage converter, it further includes: a DC ammeter, which is located between the battery and the DC terminal of the power module and is used to collect the current and voltage at the DC terminal of the power module.

[0010] In a technical solution of the above test platform for the power module of the energy storage converter, the battery uses Modbus communication to send battery data to the test controller.

[0011] In a technical solution of the above test platform for the power module of the energy storage converter, the test controller is further configured to receive the current at the AC terminal collected by the current transformer, the voltage at the AC terminal collected by the voltage transformer, and the current and voltage at the DC terminal collected by the DC ammeter.

[0012] In a technical solution of the above test platform for the power module of the energy storage converter, it further includes: a touch screen and / or a host computer, which are used to issue test instructions to the test controller and display the test results.

[0013] In a technical solution of the above test platform for the power module of the energy storage converter, the communication between the touch screen and / or the host computer and the test controller adopts serial communication and / or Modbus communication.

[0014] In a technical solution of the above test platform for the power module of the energy storage converter, it further includes: an external power supply, which is used to supply power to the test controller, the touch screen and / or the host computer.

[0015] One or more of the above technical solutions of the present application have at least one or more of the following beneficial effects:

[0016] In implementing the technical solution of the present application, the AC terminal and the DC terminal of the power module of the energy storage converter are respectively connected to the AC power supply and the DC power supply. The test controller communicates with the power module, issues a test (charge and discharge) instruction to the power module, controls the power module to perform charge and discharge tests, and receives the test result fed back by the power module. This embodiment realizes the purpose of separately testing the power module in the energy storage converter, which is beneficial to ensuring the performance of the power module before the energy storage converter is put into use, reducing the failure rate of the power module in the whole machine of the energy storage converter, and solving the problem that there is a lack of a platform for separately testing the power module of the energy storage converter in the prior art.

[0017] In implementing the technical solution of the present application, the large voltage and current at the AC end of the power module of the energy storage converter are converted into small voltage and current through current transformers and voltage transformers, achieving the purpose of obtaining the voltage and current at the AC end of the power module of the energy storage converter by using a test controller.

[0018] In implementing the technical solution of the present application, the test controller obtains the current and voltage at the AC end, the current and voltage at the DC end, and battery data of the power module of the energy storage converter. The purpose of pre-testing the charge and discharge performance of the power module before the energy storage converter is put into use is achieved, providing a basis for improving the performance of the power module and improving the accuracy of the power module when the energy storage system is connected to and disconnected from the grid. Description of the Drawings

[0019] Referring to the accompanying drawings, the disclosure of the present application will become more understandable. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. Among them:

[0020] Figure 1 is a schematic diagram of the main structural block diagram of the test platform for the power module of the energy storage converter according to an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of the main structural block diagram of the test platform for the power module of the energy storage converter according to another embodiment of the present application;

[0022] Figure 3 is a schematic diagram of the test controller obtaining the voltage and current at the AC end of the power module according to an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the main structural block diagram of the test platform for the power module of the energy storage converter according to still another embodiment of the present application;

[0024] Figure 5 is a schematic diagram of the communication between the test controller and the power module according to an embodiment of the present application;

[0025] Figure 6 is a schematic diagram of the main structural block diagram of the test platform for the power module of the energy storage converter according to yet another embodiment of the present application;

[0026] Figure 7 is a schematic diagram of the communication between the test controller, the three-phase power module, the upper computer, and the touch screen according to an embodiment of the present application;

[0027] Figure 8 is a schematic diagram of the connection between the test controller and the external power supply according to an embodiment of the present application;

[0028] Figure 9 Schematic diagram of the working principle of a test controller according to an embodiment of the present application;

[0029] Figure 10 Schematic diagram of the main process of a test method for a power module of an energy storage converter according to an embodiment of the present application.

[0030] Reference numerals:

[0031] 1: Test controller; 2: AC power supply; 3: DC power supply; 4: Power module; 41: Phase A power module; 42: Phase B power module; 43: Phase C power module; 5: Current transformer; 6: Voltage transformer; 10: Current signal acquisition module; 11: Voltage signal acquisition module; 12: Control chip; 31: Battery; 7: Transformer; 8: DC ammeter; 91: Host computer; 92: Touch screen; 101: AC source. Detailed implementation manners

[0032] Some implementation manners of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application.

[0033] In the description of the present application, terms such as "first", "second", etc. are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices. The terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two elements. It can be a wireless connection or a wired connection.

[0034] In addition, "module" and "processor" may include hardware, software, or a combination of both. A module may include a hardware circuit, various appropriate sensors, communication ports, memory, and may also include a software part, such as program code, or may be a combination of software and hardware. A processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other appropriate processor. The processor has data and / or signal processing functions. The processor may be implemented in software, in hardware, or in a combination of both. A computer-readable storage medium includes any appropriate medium that can store program code, such as a magnetic disk, a hard disk, an optical disk, a flash memory, a read-only memory, a random-access memory, and so on.

[0035] In addition, if the meaning of "and / or" appears in this application, it includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. The term "at least one of A or B" or "at least one of A and B" has a meaning similar to "A and / or B" and can include only A, only B, or A and B. The singular terms "a" and "this" may also include the plural form.

[0036] An energy storage converter generally includes multiple components such as a DC capacitor, a reactor, an AC circuit breaker, a DC load switch, an IGBT, a cooling fan, a power module, etc. Among them, the power module is the core component of the energy storage converter, responsible for both rectification and inversion (charging and discharging). The power module, as the core component of the energy storage converter, plays a very important role in ensuring its various performances. Therefore, it is extremely important to ensure the performance of the power module before the entire energy storage converter is put into use. Currently, most manufacturers do not conduct separate tests on the power module of the energy storage converter, resulting in problems being exposed at the customer site.

[0037] In view of the above problems, this application provides a test platform for the power module of an energy storage converter. Refer to the attached Figure 1 , Figure 1 is a schematic diagram of the main structural block diagram of the test platform for the power module of an energy storage converter according to an embodiment of this application. As Figure 1 shown, the test platform for the power module of the energy storage converter in the embodiment of this application mainly includes:

[0038] A test controller 1, an AC power supply 2, and a DC power supply 3. The test controller is used to receive test instructions and send the test instructions to a power module 4. The AC terminal and the DC terminal of the power module 4 are respectively connected to the AC power supply 2 and the DC power supply 3. The power module 4 performs charge and discharge tests based on the test instructions, the AC power supply 2, and the DC power supply 3, and feeds back the test results to the test controller 1.

[0039] In this embodiment, the test controller 1 is the main device for testing and controlling the power module 4, mainly used to send test instructions to the power module 4, such as controlling the power module 4 to perform charge or discharge operations, and receiving the test results (such as signals indicating normal or faulty of the power module) fed back by the power module 4. The AC power supply 2 can be a power grid or plant power, and the DC power supply 3 can be a storage battery or a battery bin. The power module 4 can be one or more of the A phase, B phase, and C phase of the energy storage converter power module.

[0040] In one implementation, the test controller 1 can communicate with the power module 4 through optical fiber communication. Usually, the power module 4 includes a control board. As an example, the optical fiber port (Subscriber Connector, SC) of the test controller 1 and the optical fiber port of the control board in the power module 4 are connected by optical fiber, so as to achieve the purpose of optical fiber communication between the test controller 1 and the power module 4.

[0041] In an alternative implementation, the test platform for the energy storage converter power module further includes: a current transformer (CT) and a potential transformer (PT). The current transformer is located between the AC power supply and the AC terminal of the power module, and is used to collect the current at the AC terminal. The potential transformer is located between the AC power supply and the AC terminal of the power module, and is used for the voltage at the AC terminal, so as to calculate performance parameters such as the power on the AC side of the power module.

[0042] In this embodiment, the power module 4 includes an A-phase power module 41, a B-phase power module 42, and a C-phase power module 43 as an example for illustration. Refer to the appendix Figure 2 , Figure 2 is a schematic diagram of the main structure block diagram of the test platform for the energy storage converter power module according to another embodiment of the present application. As shown in Figure 2As shown, the AC terminals U, V, and W of the A-phase power module 41, B-phase power module 42, and C-phase power module 43 are respectively connected to the AC power supply 2; the DC+ and DC- terminals of the A-phase power module 41, B-phase power module 42, and C-phase power module 43 are respectively connected to the DC power supply 3. One side of the three coils of the current transformer 5 is respectively connected to the three AC power lines between the AC terminals U, V, W and the AC power supply 2, and the other side is respectively connected to the test controller 1 and the ground terminal E, so as to convert the large current at the AC terminal of the three-phase power module into a small current and transmit it to the test controller 1. The high-voltage side of the voltage transformer 6 is connected to the three AC power lines between the AC terminals U, V, W and the AC power supply 2 in a star connection mode, and the low-voltage side is connected to the test controller 1 in a star connection mode, so as to convert the high voltage at the AC terminal of the three-phase power module into a low voltage and transmit it to the test controller 1, so that the test controller 1 can timely and accurately understand the changes in the three-phase load.

[0043] In one embodiment, as Figure 3 shown, the test controller 1 further includes a current signal acquisition module 10 and a voltage signal acquisition module 11. The A, B, C, and N interfaces of the current signal acquisition module 10 are respectively connected to the other side of the three coils of the current transformer 5 and the ground terminal E. The A, B, and C interfaces of the voltage signal acquisition module 11 are respectively connected to the three wires on the low-voltage side of the voltage transformer 6. The current signal acquisition module 10 and the voltage signal acquisition module 11 may include circuit units such as operational amplifiers, which are used to convert the small current and low voltage collected by the current transformer 5 and the voltage transformer 6 into the actual current and actual voltage at the AC terminal of the power module.

[0044] In an alternative embodiment, Figure 4 is a schematic diagram of the main structure block diagram of the test platform for the energy storage converter power module according to another embodiment of the present application. As Figure 4 shown, the DC power supply includes a storage battery 31, and the test platform further includes a transformer 7. The transformer 7 is located between the voltage transformer 6 and the AC power supply 2 and is used to convert the voltage of the AC power supply into the rated voltage of the three-phase power module.

[0045] In this embodiment, the transformer converts the AC voltage provided by the AC power supply (such as AC 380V) into the rated voltage of the energy storage converter three-phase power module (such as AC 690V). The storage battery provides DC voltage for the three-phase power module, and the rated voltage of the battery compartment is usually 1500V.

[0046] In one embodiment, refer to the appendix Figure 4When the test command sent by the test controller is a charging command, the three-phase power module rectifies the alternating current converted by the transformer 7 into direct current to charge the storage battery 31; when the test command sent by the test controller is a discharging command, the three-phase power module inverses the direct current provided by the storage battery 31 and transmits it to the AC power supply 2 side.

[0047] In an alternative embodiment, refer to the attached Figure 5 , Figure 5 is a communication schematic diagram of the test controller and the power module according to an embodiment of the present application. As Figure 5 shown, the test controller 1 is respectively connected to the A-phase power module 41, the B-phase power module 42, and the C-phase power module 43 through optical fibers. Specifically, the A-phase power module 41 is connected to the corresponding data sending end TX1 and data receiving end TR1 of the A-phase power module on the test controller 1 through two optical fibers; the B-phase power module 42 is connected to the corresponding data sending end TX2 and data receiving end TR2 of the B-phase power module on the test controller 1 through two optical fibers, and the C-phase power module 43 is connected to the corresponding data sending end TX3 and data receiving end TR3 of the C-phase power module on the test controller 1 through two optical fibers.

[0048] The test controller 1 further includes a control chip 12, which is used to convert the test command into an optical pulse signal and send it to the A, B, and C phase power modules through the data sending ends TX1, TX2, and TX3, and receive the test results feedback from the A, B, and C phase power modules through the data receiving ends TR1, TR2, and TR3.

[0049] In an alternative embodiment, as Figure 6 shown, the test platform of the energy storage converter power module further includes: a DC ammeter 8, connected in series between the storage battery 31 and the DC terminal of the (A-phase) power module, for collecting the current and voltage at the DC terminal of the three-phase power module.

[0050] In one embodiment, the DC ammeter (KWh) 8 uploads the collected current and voltage data of the DC terminal to the test controller 1 through an RS485 line.

[0051] In one embodiment, the storage battery 31 uploads the battery data to the test controller through a modbus network cable. The battery data includes charging power, state of charge, power, power factor, etc. The test controller 1 can calculate the stability of the power module during the charge and discharge process and the impact on the battery performance through the above battery data, which is convenient for subsequent improvement of the power module.

[0052] In one embodiment, the test controller 1 acquires the current and voltage at the AC side of the three-phase power module, the current and voltage at the DC side, and battery data, thereby calculating the charge and discharge efficiency and stability of the power module. Among them, the charge and discharge efficiency can be calculated by the methods in the prior art and will not be elaborated here. The stability is mainly reflected in monitoring whether the fluctuations of voltage and current exceed the safety threshold during the charge and discharge process to meet the stability requirements.

[0053] In one embodiment, the monitored data can be compared with the national standard requirements to determine whether they meet the standards. Exemplarily, when monitoring the charging of the battery by the power module of the energy storage converter, it is determined whether the voltage and current meet the requirements of the DC side power quality (voltage stabilization and current stabilization), such as the current stabilization accuracy ≤ 1% during constant current charging and the voltage stabilization accuracy ≤ 0.5% during constant voltage charging.

[0054] In this embodiment, by monitoring the voltage and current of the power module and improving the power module when the requirements are not met, the purpose of improving the accuracy of the power module of the energy storage converter during the grid-connected and off-grid operation of the energy storage system is achieved, and the effect of improving the user experience is achieved.

[0055] In an alternative embodiment, the test platform for the power module of the energy storage converter further includes: a touch screen, a host computer, or both a touch screen and a host computer. Both the touch screen and the host computer can issue test instructions to the test controller, display test results, the charge and discharge efficiency and stability of the power module, and display the collected current and voltage waveforms, etc. In addition, the host computer can also perform complex operations such as programming.

[0056] In one embodiment, Figure 7 is a communication schematic diagram of the test controller, the three-phase power module, the host computer, and the touch screen according to an embodiment of the present application. As Figure 7 shown, the touch screen 92 communicates with the test controller 1 via a serial port (RS485 / RS232), and the host computer 91 communicates with the test controller 1 via modbus. The host computer 91 or the touch screen 92 issues a test instruction to the test controller 1, and the test controller 1 sends the test instruction to the phase A power module 41, the phase B power module 42, and the phase C power module 43 via optical fiber.

[0057] In an alternative embodiment, the test platform for the power module of the energy storage converter further includes: an external power supply, which is used to supply power to the test controller, the touch screen, and / or the host computer.

[0058] In one embodiment, referring to the appendix Figure 8 , the external power supply is, for example, an AC source (AC220V) 101, and this AC source 101 is connected to the power interface of the test controller 1 to provide 220V alternating current for the test controller.

[0059] In one embodiment, the test controller 1 can convert AC 220V into DC 24V (DC24V) to power the touch screen and / or the host computer.

[0060] In one embodiment, the touch screen and / or the host computer can also be powered by an external power supply.

[0061] In one embodiment, after the touch screen is powered on, it performs a self-check operation. After the self-check is correct, it issues a test instruction to the test controller, thereby improving the reliability of the power module test.

[0062] In an alternative embodiment, Figure 9 is a schematic diagram of the working principle of the test controller according to an embodiment of the present application. As Figure 9 shown, the control chip 12 includes a pulse processing module, a digital quantity processing module, an analog quantity processing module, and a signal processing module. Among them, the pulse processing module is connected to the data receiving end and the data sending end of the three-phase power module to perform the conversion between pulse signals and other signals; the digital quantity processing module and the analog quantity processing module are used to process digital quantities (digital signals) and analog quantities (process analog signals), such as performing operations and conversions on the collected voltage, current, power factor, charge instruction, discharge instruction, etc.; the signal processing module is mainly used to process the signals transmitted by modbus communication with the host computer 91 and the signals transmitted by serial communication with the touch screen.

[0063] This embodiment integrates serial communication and optical communication, achieving the purpose of simply and conveniently performing charge and discharge tests on the power modules of the energy storage converter, reducing the probability of failures of the power modules (power modules) in the energy storage converter during the operation of the energy storage system, and achieving the effect of improving the overall performance of the energy storage converter. The test platform for the power module of the energy storage converter provided by this embodiment has the advantages of low cost, high test efficiency, and simple operation, and can quickly and efficiently test the performance of the power module, having great engineering application value.

[0064] In an alternative embodiment, Figure 10 is a schematic diagram of the main process of the test method for the power module of the energy storage converter according to an embodiment of the present application. As Figure 10 shown, the test method mainly includes the following steps:

[0065] Step S101, build a test platform.

[0066] In this embodiment, a test platform is built according to the test platform for any of the above power modules of the energy storage converter to test the power module of the energy storage converter.

[0067] Step S102, the test controller communicates with the product to be tested and the touch screen respectively.

[0068] In this embodiment, the test controller communicates with the product under test, such as a three-phase power module and a touch screen, respectively. The communication method can refer to the above-mentioned other embodiments and will not be elaborated here.

[0069] Step S103: The transformer and the battery supply power to the power module respectively.

[0070] In this embodiment, the DC power supply is used to supply power (electrically connect) to the DC terminal of the power module, and the AC power supply and the transformer are used to supply power to the AC terminal of the power module. The voltage levels of the AC terminal and the DC terminal of the power module can be set according to specific circumstances, and this embodiment does not make specific restrictions on this.

[0071] Step S104: The touch screen controls the test controller through serial communication.

[0072] In this embodiment, the touch screen issues test instructions (charging instructions / discharging instructions) to the test controller through serial communication (RS485 / RS232).

[0073] Step S105: The test controller transmits pulse signals to the power module through optical fiber.

[0074] In this embodiment, the test controller converts the test instructions in step S104 into optical pulse signals and transmits them to the power module through optical fiber.

[0075] Step S106: Control the power module to charge or discharge.

[0076] In this embodiment, the power module charges or discharges based on the test instructions issued by the test controller to realize the test of the power module of the energy storage converter.

[0077] In one embodiment, power can be used to represent the test (charge / discharge) instructions. For example, -100Kw is used to represent the charging instruction, and 100Kw is used to represent the discharging instruction.

[0078] Step S107: After the test, data can be stored and the module under test can be put into the standby state.

[0079] In this embodiment, the test results, the charge and discharge efficiency, stability and other data of the power module can be viewed through the touch screen. After the test, the above test data can also be stored for convenient viewing in the future. As an example, after the test, the data can be copied by connecting a USB flash drive to the USB interface of the touch screen. After the test is completed, the power module can be removed after powering off.

[0080] The above test method for the energy storage converter power module is implemented based on the test platform for the energy storage converter power module. The technical principles, technical problems solved, and technical effects produced by the two are similar. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process and related descriptions of the test method for the energy storage converter power module can refer to the content described in the embodiments of the above test platform for the energy storage converter power module, and will not be elaborated here.

[0081] It should be noted that although the above steps are described in a specific order in the above embodiments, those skilled in the art can understand that in order to achieve the effects of the present application, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders. These adjusted solutions are equivalent technical solutions to the technical solutions described in the present application, and therefore will also fall within the protection scope of the present application.

[0082] So far, the technical solution of the present application has been described in conjunction with one embodiment shown in the drawings. However, those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present application.

Claims

1. A test platform for a power module of an energy storage converter, characterized in that, Including: A test controller, an AC power supply, and a DC power supply. The test controller is configured to receive a test instruction, send the test instruction to a power module. The AC terminal and the DC terminal of the power module are respectively connected to the AC power supply and the DC power supply. The power module performs charge and discharge tests based on the test instruction, the AC power supply, and the DC power supply, and feeds back the test results to the test controller.

2. The test platform for the power module of the energy storage converter according to claim 1, characterized in that Further including: A current transformer and a voltage transformer. The current transformer is located between the AC power supply and the AC terminal of the power module, and is used to collect the current at the AC terminal of the power module. The voltage transformer is located between the AC power supply and the AC terminal of the power module, and is used to collect the voltage at the AC terminal of the power module.

3. The test platform for the power module of the energy storage converter according to claim 2, characterized in that, The DC power supply includes a storage battery. The test platform further includes: a transformer, which is used to convert the voltage of the AC power supply into the rated voltage of the power module.

4. The test platform for the energy storage converter power module according to claim 1, characterized in that, The test controller is connected to the power module through an optical fiber. The test controller further includes a control chip, a data receiving end, and a data sending end. The control chip is configured to convert the test instruction into an optical pulse signal and send it to the power module through the data sending end, and receive the test results fed back by the power module through the data receiving end.

5. The test platform for the power module of the energy storage converter according to claim 3, characterized in that, Further including: A DC ammeter, which is located between the storage battery and the DC terminal of the power module, and is used to collect the current and voltage at the DC terminal of the power module.

6. The test platform for the power module of the energy storage converter according to claim 3, characterized in that, The storage battery uses modbus communication to send battery data to the test controller.

7. The test platform for the power module of the energy storage converter according to claim 5, characterized in that, The test controller is further configured to receive the current at the AC terminal collected by the current transformer, the voltage at the AC terminal collected by the voltage transformer, and the current and voltage at the DC terminal collected by the DC ammeter.

8. The test platform for the power module of the energy storage converter according to claim 1, characterized in that Further including: A touch screen and / or a host computer. The touch screen and / or the host computer are used to issue test instructions to the test controller and display the test results.

9. The test platform for the energy storage converter power module according to claim 8, wherein The communication between the touch screen and / or the host computer and the test controller adopts serial communication and / or modbus communication.

10. The test platform for the energy storage converter power module according to claim 9, characterized in that, Further including: An external power supply, which is used to supply power to the test controller, the touch screen and / or the host computer.

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