A resonant module testing device and method

Abstract

The application provides a resonant module testing device and method, the device comprises a trigger control system and a monitoring system; a tested valve with a resonant module is connected with an auxiliary valve in parallel, and then is connected with the trigger control system and the monitoring system; the trigger control system triggers the auxiliary valve and the tested valve based on a control mode command issued by the monitoring system, so that the auxiliary valve works in a voltage control mode and the tested valve works in a power control mode; then the load side current of the tested valve and the load side voltage of the auxiliary valve are fed back to the monitoring system, so that the testing of the tested valve with the resonant module is realized; the structure of the auxiliary valve is consistent with that of the tested valve, the switching loss of the switching tube is reduced, the reliability of the switching tube is improved, and then the testing efficiency is improved; the auxiliary valve and the tested valve adopt the resonant module, so that the volume is small, the power density is high, the control is flexible, and the running characteristics of the switching tube under different voltage stresses, current stresses and thermal stresses can be tested.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power systems, in particular to a resonant module testing device and method. BACKGROUND

[0002] The energy revolution has put forward higher requirements for the safety, reliability, controllability and flexibility of the power grid, and the wide application of flexible AC / DC transmission devices has become a development trend of future power grids. High-voltage high-frequency fully controlled devices are the core of flexible AC / DC transmission devices. At present, among the switching tubes (i.e. high-power high-voltage high-frequency fully controlled devices), silicon insulated gate bipolar transistors (IGBT) based on silicon materials are the representatives, and the maximum voltage can reach 6.5kV. In order to further improve the voltage resistance of a single device, SiC materials with superior physical properties must be used. Among them, SiC IGBT has the advantage of conductance modulation, which will greatly reduce the number of series devices and auxiliary equipment, thereby greatly reducing the loss, volume and cost of power equipment, and improving the reliability, flexibility and applicability.

[0003] The prior art generally uses a full-bridge module and a transformer to test the characteristics of the switching tube. However, due to the particularly high switching frequency of the switching tube, which is basically completed within microseconds or even nanoseconds, it will result in particularly high switching loss of the switching tube, overhigh junction temperature of the switching tube and failure, and further low test efficiency. SUMMARY

[0004] In order to overcome the low test efficiency in the prior art, the present application provides a resonant module testing device, which comprises a trigger control system and a monitoring system.

[0005] The tested valve with a resonant module and an auxiliary valve are connected in parallel, and then connected with the trigger control system and the monitoring system.

[0006] The trigger control system triggers the auxiliary valve and the tested valve based on the control mode command issued by the monitoring system, so that the auxiliary valve works in a voltage control mode and the tested valve works in a power control mode. Then the load side current of the tested valve and the load side voltage of the auxiliary valve are fed back to the monitoring system to realize the test of the tested valve with a resonant module.

[0007] The auxiliary valve structure is consistent with the structure of the tested valve.

[0008] The trigger control system comprises:

[0009] An acquisition module is configured to acquire the control mode command issued by the monitoring system, and acquire the load side current of the tested valve and the load side voltage of the auxiliary valve.

[0010] A trigger module is configured to trigger the auxiliary valve and the tested valve based on the control mode command.

[0011] The sending module is configured to feed back the acquired load-side current of the sample valve and the load-side voltage of the auxiliary valve to the monitoring system.

[0012] The resonant modules of the auxiliary valve and the sample valve are one or more.

[0013] When the resonant modules are one, the power supply side of the resonant module in the auxiliary valve is connected in parallel with the power supply side of the resonant module in the sample valve, and the load side of the resonant module in the auxiliary valve is connected in parallel with the load side of the resonant module in the sample valve.

[0014] When the resonant modules are more than one, the power supply side of the resonant module in the auxiliary valve is connected in series with the power supply side of the resonant module in the sample valve, and the load side of the resonant module in the auxiliary valve is connected in parallel with the load side of the resonant module in the sample valve.

[0015] The resonant module comprises a power supply side DC support capacitor, a first full-bridge structure, a first resonant circuit, a high-frequency transformer, a second resonant circuit, a second full-bridge structure, and a load side DC support capacitor.

[0016] The power supply side DC support capacitor is connected in parallel with the first full-bridge structure, the load side DC support capacitor is connected in parallel with the second full-bridge structure, and the first full-bridge structure, the first resonant circuit, the high-frequency transformer, the second resonant circuit, and the second full-bridge structure are connected in series.

[0017] The resonant module further comprises a DC power supply connected in parallel with the auxiliary valve and the sample valve, and configured to supply power to the auxiliary valve and the sample valve.

[0018] The first resonant circuit and the second resonant circuit each comprise a resonant inductor and a resonant capacitor connected in series.

[0019] The first full-bridge structure and the second full-bridge structure each comprise a first half-bridge and a second half-bridge.

[0020] The first half-bridge and the second half-bridge each comprise a switch tube located in an upper bridge arm and a switch tube located in a lower bridge arm.

[0021] The resonant module further comprises a cooling system configured to dissipate heat from the switch tubes.

[0022] The auxiliary valve adopts a voltage control mode, and the sample valve adopts a power control mode.

[0023] The monitoring system is specifically configured to:

[0024] The monitoring system determines that the auxiliary valve and the test valve pass the test if the load side current of the test valve is within the preset load side current range, the load side voltage of the auxiliary valve is within the preset load side voltage range, and the auxiliary valve and the test valve are stably operated for the preset time, otherwise, the monitoring system determines that the auxiliary valve and the test valve fail the test.

[0025] In another aspect, the present application further provides a resonant module testing method, comprising:

[0026] The trigger control system receives the control mode command issued by the monitoring system, and triggers the test valve and the auxiliary valve with resonant modules based on the control mode command, so that the auxiliary valve works in the voltage control mode and the test valve works in the power control mode.

[0027] The trigger control system acquires the load side current of the test valve and the load side voltage of the auxiliary valve, and feeds back to the monitoring system.

[0028] The monitoring system tests the test valve and the auxiliary valve with resonant modules based on the load side current of the test valve and the load side voltage of the auxiliary valve.

[0029] Triggering the test valve and the auxiliary valve with resonant modules based on the control mode command comprises:

[0030] The trigger control system triggers the auxiliary valve and the test valve, so that the switching tubes of the first half-bridge upper bridge arm of the first full-bridge structure in the auxiliary valve, the switching tubes of the first half-bridge upper bridge arm of the first full-bridge structure in the test valve, the switching tubes of the second half-bridge lower bridge arm of the first full-bridge structure in the auxiliary valve, and the switching tubes of the second half-bridge lower bridge arm of the first full-bridge structure in the test valve are all turned on in the first half of the control period and turned off in the second half of the control period.

[0031] The trigger control system triggers the auxiliary valve and the test valve, so that the switching tubes of the second half-bridge upper bridge arm of the first full-bridge structure in the auxiliary valve, the switching tubes of the second half-bridge upper bridge arm of the first full-bridge structure in the test valve, the switching tubes of the first half-bridge lower bridge arm of the first full-bridge structure in the auxiliary valve, and the switching tubes of the first half-bridge lower bridge arm of the first full-bridge structure in the test valve are all turned off in the first half of the control period and turned on in the second half of the control period.

[0032] The trigger control system triggers the auxiliary valve and the sample valve, so that the switch tube of the first half-bridge upper bridge arm of the second full-bridge structure in the auxiliary valve, the switch tube of the first half-bridge upper bridge arm of the second full-bridge structure in the sample valve, the switch tube of the second half-bridge lower bridge arm of the second full-bridge structure in the auxiliary valve and the switch tube of the second half-bridge lower bridge arm of the second full-bridge structure in the sample valve are turned on within the trigger pulse width, and are turned off at a time within the control period and outside the trigger pulse width.

[0033] The trigger control system triggers the auxiliary valve and the sample valve, so that the switch tube of the first half-bridge upper bridge arm of the second full-bridge structure in the auxiliary valve, the switch tube of the first half-bridge upper bridge arm of the second full-bridge structure in the sample valve, the switch tube of the second half-bridge lower bridge arm of the second full-bridge structure in the auxiliary valve and the switch tube of the second half-bridge lower bridge arm of the second full-bridge structure in the sample valve are turned on within the trigger pulse width, and are turned off at a time within the control period and outside the trigger pulse width.

[0034] The monitoring system tests the sample valve and the auxiliary valve with the resonant module based on the load side current of the sample valve and the load side voltage of the auxiliary valve, and the testing method comprises the following steps of:

[0035] The monitoring system judges whether the load side current of the sample valve fed back by the trigger control system is within a preset load side current range, whether the load side voltage of the auxiliary valve fed back by the trigger control system is within a preset load side voltage range and whether the auxiliary valve and the sample valve are stably operated for a preset time, and if the load side current is within the preset load side current range, the load side voltage of the auxiliary valve is within the preset load side voltage range and the auxiliary valve and the sample valve are stably operated for the preset time, the monitoring system determines that the auxiliary valve and the sample valve pass the test, otherwise, the monitoring system determines that the auxiliary valve and the sample valve do not pass the test.

[0036] The technical scheme provided by the present application has the following beneficial effects:

[0037] The resonant module testing device provided by the present application comprises a trigger control system and a monitoring system; a sample valve to be tested and an auxiliary valve with a resonant module are connected in parallel, and then connected with the trigger control system and the monitoring system; the trigger control system triggers the auxiliary valve and the sample valve based on the control mode command issued by the monitoring system, so that the auxiliary valve works in a voltage control mode and the sample valve works in a power control mode; then the load side current of the sample valve and the load side voltage of the auxiliary valve are fed back to the monitoring system, so as to realize the test on the sample valve with the resonant module; the structure of the auxiliary valve is consistent with that of the sample valve to be tested, which greatly reduces the switching loss of the switch tube, improves the reliability of the switch tube in the sample valve and the auxiliary valve, and further improves the test efficiency.

[0038] The auxiliary valve and the sample valve of the application adopt a resonant module, the auxiliary valve adopts a voltage control mode, the sample valve adopts a power control mode, zero voltage opening is realized, under the condition of high frequency, switch tube loss can be significantly reduced, and the operation efficiency of the switch tube is improved;

[0039] The application has small volume, high power density, flexible control, and can test the operation characteristics of the switch tube under different voltage stress, current stress and thermal stress. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a resonant module test device structure diagram in the embodiment of the application;

[0041] Figure 2 is a voltage control mode schematic diagram adopted by the auxiliary valve in the embodiment of the application;

[0042] Figure 3 is a power control mode schematic diagram adopted by the sample valve in the embodiment of the application;

[0043] Figure 4 is a resonant module test method flow chart in the embodiment of the application;

[0044] Figure 5 is a switch tube state schematic diagram in a control period. DETAILED DESCRIPTION

[0045] The application will be further described in detail below with reference to the accompanying drawings.

[0046] Embodiment 1

[0047] Embodiment 1 of the application provides a resonant module test device, as shown in Figure 1 , Figure 1In the formula, V1 is a power supply side voltage (i.e. a high voltage side voltage), V2 is a load side voltage (i.e. a low voltage side voltage), V1 is determined by a direct current power supply, V2 is controlled by an auxiliary valve, I1 is a power supply side current (i.e. a high voltage side current), I2 is a load side current (i.e. a low voltage side current), C1 is a power supply side direct current support capacitor in the auxiliary valve, C2 is a load side direct current support capacitor in the auxiliary valve, S1-S4 are switch tubes of a first full-bridge structure in the auxiliary valve, S5-S8 are switch tubes of a second full-bridge structure in the auxiliary valve, Lr11 is a resonance inductance of a first resonance loop in the auxiliary valve, Cr11 is a resonance capacitance of the first resonance loop in the auxiliary valve, Lr12 is a resonance inductance of a second resonance loop in the auxiliary valve, Cr12 is a resonance capacitance of the second resonance loop in the auxiliary valve, M1 is a high-frequency transformer in the auxiliary valve, Lm1 is an excitation inductance of M1, C3 is a power supply side direct current support capacitor in the test valve, C4 is a load side direct current support capacitor in the test valve, Q1-Q4 are switch tubes of a first full-bridge structure in the test valve, Q5-Q8 are switch tubes of a second full-bridge structure in the test valve, Lr21 is a resonance inductance of a first resonance loop in the test valve, Cr21 is a resonance capacitance of the first resonance loop in the test valve, Lr22 is a resonance inductance of a second resonance loop in the test valve, Cr22 is a resonance capacitance of the second resonance loop in the test valve, and M2 is a high-frequency transformer in the test valve, and Lm2 is an excitation inductance of M2.

[0048] The resonant module test device provided by the embodiment 1 of the present application comprises a trigger control system and a monitoring system.

[0049] The test valve with the resonant module and the auxiliary valve are connected in parallel, and then connected with the trigger control system and the monitoring system.

[0050] The trigger control system triggers the auxiliary valve and the test valve based on the control mode command issued by the monitoring system, so that the auxiliary valve works in the voltage control mode and the test valve works in the power control mode, and then feeds back the load side current of the test valve and the load side voltage of the auxiliary valve to the monitoring system, so as to realize the test on the test valve with the resonant module.

[0051] The structure of the auxiliary valve is consistent with the structure of the test valve.

[0052] The trigger control system comprises:

[0053] The acquisition module is configured to acquire the control mode command issued by the monitoring system and acquire the load side current of the test valve and the load side voltage of the auxiliary valve.

[0054] The trigger module is configured to trigger the auxiliary valve and the test valve based on the control mode command.

[0055] The sending module is configured to feed back the load side current of the test valve and the load side voltage of the auxiliary valve to the monitoring system.

[0056] The resonant module of the auxiliary valve and the sample valve is one or more; the auxiliary valve and the sample valve in the embodiment 1 of the present application take one resonant module as an example.

[0057] The trigger control system is used for receiving the control mode command issued by the monitoring system, issuing the trigger pulse to the auxiliary valve and the sample valve based on the control mode command, and feeding back the state of the auxiliary valve and the sample valve to the monitoring system, and the monitoring system is also used for interacting with the upper computer.

[0058] When the resonant module is one, the power supply side of the resonant module in the auxiliary valve is connected in parallel with the power supply side of the resonant module in the sample valve, and the load side of the resonant module in the auxiliary valve is connected in parallel with the load side of the resonant module in the sample valve.

[0059] When the resonant module is more than one, the power supply side of the resonant module in the auxiliary valve is connected in series with the power supply side of the resonant module in the sample valve, and the load side of the resonant module in the auxiliary valve is connected in parallel with the load side of the resonant module in the sample valve.

[0060] The resonant module comprises a power supply side DC support capacitor, a first full-bridge structure, a first resonant circuit, a high-frequency transformer, a second resonant circuit, a second full-bridge structure and a load side DC support capacitor.

[0061] The power supply side DC support capacitor is connected in parallel with the first full-bridge structure, the load side DC support capacitor is connected in parallel with the second full-bridge structure, and the first full-bridge structure, the first resonant circuit, the high-frequency transformer, the second resonant circuit and the second full-bridge structure are connected in series.

[0062] The test device provided by the embodiment 1 of the present application further comprises a DC power supply connected in parallel with the auxiliary valve and the sample valve, and used for supplying power for the auxiliary valve and the sample valve. The DC power supply in the embodiment 1 of the present application comprises a transformer, a rectifier unit, a DC chopper unit and a power supply control protection system. The DC power supply is a charging power supply in the charging process of the power supply side DC support capacitor C1 of the auxiliary valve and the power supply side DC support capacitor C3 of the sample valve. In the charging process, the switch tubes in the auxiliary valve and the sample valve are all in the locked state. When the voltages of C1 and C3 both reach the preset voltage, the trigger control system issues an unlocking command to the switch tubes (namely S1-S4 and Q1-Q4) of the high-voltage side of the auxiliary valve and the sample valve. S1-S4 and Q1-Q4 all adopt phase-shifted control, and the load side DC support capacitors C2 of the auxiliary valve and C4 of the sample valve are charged through the diodes of the high-frequency transformer and the low-voltage side switch tubes (namely S5-S8 and Q5-Q8). When the voltages of C2 and C4 respectively reach the preset voltage, the trigger control system issues a control command to make the auxiliary valve and the sample valve exchange energy. At this time, the DC power supply acts as a power supply. The voltages and currents of the switch tubes are measured to evaluate the high-frequency operation characteristics of the switch tubes.

[0063] Both the first and second resonant circuits include a resonant inductor and a resonant capacitor connected in series.

[0064] Both the first full-bridge structure and the second full-bridge structure include a first half-bridge and a second half-bridge.

[0065] Both the first and second half-bridges include a switch located in the upper bridge arm and a switch located in the lower bridge arm.

[0066] Embodiment 1 of the present invention employs a resonant module including a first resonant circuit and a second resonant circuit, that is, both the test valve and the auxiliary valve adopt soft switching technology, which greatly reduces the switching loss of the switching transistor and improves the testing efficiency of the testing device.

[0067] The testing apparatus provided in Embodiment 1 of the present invention further includes a cooling system for dissipating heat from the switching transistor.

[0068] The auxiliary valve employs a voltage-controlled mode, where the magnitude and direction of power flow are determined by the load, allowing for bidirectional energy transfer. The voltage control mode is as follows: Figure 2 As shown, Figure 2 In the diagram, S1-S8 are the switching transistors in the auxiliary valve, V0_ref is the reference value of the load side voltage, V2 is the load side voltage, fs is the control frequency, S1 to S8 are the switching transistors in the auxiliary valve, and PI indicates that the voltage control adopts the proportional-integral control method.

[0069] The test sample valve adopts a power control mode. The magnitude and direction of the power flow in the test sample valve will flow according to the set power magnitude and direction. The power control mode is as follows: Figure 3 As shown, Figure 3 In the diagram, Q1-Q8 are the switching transistors in the test valve, Po_ref is the power reference value, V2 is the load-side voltage, Io_ref is the current reference value, I2 is the load-side current, fs is the control frequency, and PI indicates that the power control adopts the proportional-integral control method.

[0070] The monitoring system is specifically used for:

[0071] The system determines whether the load-side current of the test valve fed back by the trigger control system is within the preset load-side current range, whether the load-side voltage of the auxiliary valve fed back by the trigger control system is within the preset load-side voltage range, and whether the auxiliary valve and the test valve have been running stably for a preset time. If the load-side current is within the preset load-side current range, the load-side voltage of the auxiliary valve is within the preset load-side voltage range, and the auxiliary valve and the test valve have been running stably for a preset time, the monitoring system determines that the auxiliary valve and the test valve have passed the test; otherwise, the monitoring system determines that the auxiliary valve and the test valve have failed the test.

[0072] Example 2

[0073] Embodiment 2 of the present application provides a resonant module test method, and a specific flow chart is shown in Figure 4 and the specific process is as follows:

[0074] S101: The trigger control system receives the control mode command issued by the monitoring system, and triggers the test valve and the auxiliary valve with the resonant module based on the control mode command, so that the auxiliary valve works in the voltage control mode and the test valve works in the power control mode;

[0075] S102: The trigger control system acquires the load side current of the test valve and the load side voltage of the auxiliary valve, and feeds back to the monitoring system;

[0076] S103: The monitoring system tests the test valve and the auxiliary valve with the resonant module based on the load side current of the test valve and the load side voltage of the auxiliary valve.

[0077] When the auxiliary valve works in the voltage control mode and the test valve works in the power control mode, the state of the switch tube in the control period Ts is as shown in Figure 5 , Figure 5 wherein Ts represents the control period, Td represents the trigger pulse width, Td is generally set to 0-50us, and must satisfy Td<Ts / 2, and in the present application, Td is set to 25us. The trigger pulse widths of the test valve and the auxiliary valve are the same.

[0078] The test valve and the auxiliary valve with the resonant module are triggered based on the control mode command, and the specific process is as follows:

[0079] The trigger control system triggers the auxiliary valve and the test valve, so that the switch tube (i.e. S1) of the upper bridge arm of the first half bridge of the first full bridge structure in the auxiliary valve, the switch tube (i.e. Q1) of the upper bridge arm of the first half bridge of the first full bridge structure in the test valve, the switch tube (i.e. S4) of the lower bridge arm of the second half bridge of the first full bridge structure in the auxiliary valve, and the switch tube (i.e. Q4) of the lower bridge arm of the second half bridge of the first full bridge structure in the test valve are all turned on in the first half of the control period and turned off in the second half of the control period;

[0080] The trigger control system triggers the auxiliary valve and the test valve, so that the switch tube (i.e. S2) of the upper bridge arm of the second half bridge of the first full bridge structure in the auxiliary valve, the switch tube (i.e. Q2) of the upper bridge arm of the second half bridge of the first full bridge structure in the test valve, the switch tube (i.e. S3) of the lower bridge arm of the first half bridge of the first full bridge structure in the auxiliary valve, and the switch tube (i.e. Q3) of the lower bridge arm of the first half bridge of the first full bridge structure in the test valve are all turned off in the first half of the control period and turned on in the second half of the control period;

[0081] The trigger control system triggers the auxiliary valve and the sample valve, so that the switch tube (i.e. S5) of the first half-bridge upper bridge arm of the second full-bridge structure in the auxiliary valve, the switch tube (i.e. Q5) of the first half-bridge upper bridge arm of the second full-bridge structure in the sample valve, the switch tube (i.e. S8) of the second half-bridge lower bridge arm of the second full-bridge structure in the auxiliary valve, and the switch tube (i.e. Q8) of the second half-bridge lower bridge arm of the second full-bridge structure in the sample valve are all turned on within the trigger pulse width, and are turned off at a time within the control period and outside the trigger pulse width;

[0082] The trigger control system triggers the auxiliary valve and the sample valve, so that the switch tube (i.e. S6) of the second half-bridge upper bridge arm of the second full-bridge structure in the auxiliary valve, the switch tube (i.e. Q6) of the second half-bridge upper bridge arm of the second full-bridge structure in the sample valve, the switch tube (i.e. S7) of the first half-bridge lower bridge arm of the second full-bridge structure in the auxiliary valve, and the switch tube (i.e. Q7) of the first half-bridge lower bridge arm of the second full-bridge structure in the sample valve are all turned off within the first half of the control period and at a time within the second half of the control period and outside the trigger pulse width, and are turned on within the second half of the control period and within the trigger pulse width.

[0083] The monitoring system tests the sample valve and the auxiliary valve with the resonant module based on the load side current of the sample valve and the load side voltage of the auxiliary valve, including:

[0084] The monitoring system judges whether the load side current of the sample valve fed back by the trigger control system is within a preset load side current range, whether the load side voltage of the auxiliary valve fed back by the trigger control system is within a preset load side voltage range, and whether the auxiliary valve and the sample valve are stably operated for a preset time. If the load side current is within the preset load side current range, the load side voltage of the auxiliary valve is within the preset load side voltage range, and the auxiliary valve and the sample valve are stably operated for the preset time, the monitoring system determines that the auxiliary valve and the sample valve pass the test, otherwise, the monitoring system determines that the auxiliary valve and the sample valve fail the test.

[0085] For the sake of description, the above-mentioned device is described in various modules or units in terms of functions. Of course, the functions of the modules or units can be implemented in the same or multiple software or hardware in the implementation of the present application.

[0086] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

[0087] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0088] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0089] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0090] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present application, but not limit the technical solutions of the present application. Based on the above-mentioned embodiments, the ordinary skilled in the art can still modify or equivalently replace the specific embodiments of the present application. Any modification or equivalent replacement without departing from the spirit and scope of the present application is within the protection scope of the present application.

Claims

1. A resonant module testing device, characterized in that, This includes trigger control systems and monitoring systems; The test valve with a resonant module is connected in parallel with the auxiliary valve, and then connected to the monitoring system through the trigger control system. The trigger control system triggers the auxiliary valve and the test valve based on the control mode command issued by the monitoring system, so that the auxiliary valve operates in voltage control mode and the test valve operates in power control mode; then, the load side current of the test valve and the load side voltage of the auxiliary valve are obtained and fed back to the monitoring system to realize the testing of the test valve with resonant module. The auxiliary valve structure is consistent with the valve structure of the test sample; The auxiliary valve adopts a voltage control mode, and the sample valve adopts a power control mode; The triggering control system includes: The acquisition module is used to acquire control mode commands issued by the monitoring system, and to acquire the load-side current of the test valve and the load-side voltage of the auxiliary valve. The trigger module is used to trigger the auxiliary valve and the test valve based on the control mode command; The transmitting module is used to feed back the acquired load-side current of the test valve and the load-side voltage of the auxiliary valve to the monitoring system.

2. The resonant module testing device according to claim 1, characterized in that, The auxiliary valve and the test valve are resonant modules of one or more.

3. The resonant module testing device according to claim 2, characterized in that, When there is only one resonant module, the power supply side of the resonant module in the auxiliary valve is connected in parallel with the power supply side of the resonant module in the test sample valve, and the load side of the resonant module in the auxiliary valve is connected in parallel with the load side of the resonant module in the test sample valve. When there are multiple resonant modules, the power supply side of the resonant module in the auxiliary valve is connected in series with the power supply side of the resonant module in the test sample valve, and the load side of the resonant module in the auxiliary valve is connected in parallel with the load side of the resonant module in the test sample valve.

4. The resonant module testing device according to claim 3, characterized in that, The resonant module includes a power supply-side DC support capacitor, a first full-bridge structure, a first resonant circuit, a high-frequency transformer, a second resonant circuit, a second full-bridge structure, and a load-side DC support capacitor. The power supply side DC support capacitor is connected in parallel with the first full-bridge structure, the load side DC support capacitor is connected in parallel with the second full-bridge structure, and the first full-bridge structure, the first resonant circuit, the high-frequency transformer, the second resonant circuit, and the second full-bridge structure are connected in series in sequence.

5. The resonant module testing device according to claim 4, characterized in that, It also includes a DC power supply, which is connected in parallel with the auxiliary valve and the test valve to supply power to the auxiliary valve and the test valve.

6. The resonant module testing device according to claim 5, characterized in that, Both the first resonant circuit and the second resonant circuit include a resonant inductor and a resonant capacitor connected in series. Both the first full-bridge structure and the second full-bridge structure include a first half-bridge and a second half-bridge. Both the first half-bridge and the second half-bridge include a switch located in the upper bridge arm and a switch located in the lower bridge arm.

7. The resonant module testing device according to claim 6, characterized in that, It also includes a cooling system for dissipating heat from the switching transistor.

8. The resonant module testing device according to claim 1, characterized in that, The monitoring system is specifically used for: The system determines whether the load-side current of the test valve fed back by the trigger control system is within a preset load-side current range, whether the load-side voltage of the auxiliary valve fed back by the trigger control system is within a preset load-side voltage range, and whether the auxiliary valve and the test valve have been running stably for a preset time. If the load-side current is within the preset load-side current range, the load-side voltage of the auxiliary valve is within the preset load-side voltage range, and the auxiliary valve and the test valve have been running stably for a preset time, the monitoring system determines that the auxiliary valve and the test valve have passed the test; otherwise, the monitoring system determines that the auxiliary valve and the test valve have failed the test.

9. A method for testing resonant modules, characterized in that, include: The trigger control system receives the control mode command issued by the monitoring system, and triggers the test valve and auxiliary valve with resonant module based on the control mode command, so that the auxiliary valve works in voltage control mode and the test valve works in power control mode. The trigger control system acquires the load-side current of the test valve and the load-side voltage of the auxiliary valve, and feeds it back to the monitoring system; The monitoring system tests the test valve and the auxiliary valve with the resonant module based on the load-side current of the test valve and the load-side voltage of the auxiliary valve.

10. The resonant module testing method according to claim 9, characterized in that, The command-triggered sample valve and auxiliary valve with resonant module based on the control mode includes: The trigger control system triggers the auxiliary valve and the test valve, causing the switching transistors of the upper half-bridge of the first half-bridge structure in the auxiliary valve, the upper half-bridge of the first half-bridge structure in the test valve, the lower half-bridge of the second half-bridge structure in the auxiliary valve, and the lower half-bridge of the second half-bridge structure in the test valve to be turned on in the first half of the control cycle and turned off in the second half of the control cycle. The trigger control system triggers the auxiliary valve and the test valve, causing the switching transistors of the upper half-bridge of the second half-bridge of the first full-bridge structure in the auxiliary valve, the upper half-bridge of the second half-bridge of the first full-bridge structure in the test valve, the lower half-bridge of the first half-bridge of the first full-bridge structure in the auxiliary valve, and the lower half-bridge of the first half-bridge of the first full-bridge structure in the test valve to be turned off in the first half-control cycle and turned on in the second half-control cycle. The trigger control system triggers the auxiliary valve and the test valve, causing the switching transistors of the upper half-bridge of the first half-bridge of the second full-bridge structure in the auxiliary valve, the upper half-bridge of the first half-bridge of the second full-bridge structure in the test valve, the lower half-bridge of the second half-bridge of the second full-bridge structure in the auxiliary valve, and the lower half-bridge of the second half-bridge of the second full-bridge structure in the test valve to be turned on within the trigger pulse width, and turned off within the control cycle and outside the trigger pulse width. The trigger control system triggers the auxiliary valve and the test valve, causing the switching transistors of the upper half-bridge of the second half-bridge structure in the auxiliary valve, the upper half-bridge of the second half-bridge structure in the test valve, the lower half-bridge of the first half-bridge structure in the auxiliary valve, and the lower half-bridge of the first half-bridge structure in the test valve to be turned off during the first half of the control cycle and for a period of time outside the trigger pulse width during the second half of the control cycle, and turned on during the second half of the control cycle and within the trigger pulse width.

11. The resonant module testing method according to claim 10, characterized in that, The monitoring system tests the test valve and auxiliary valve with resonant module based on the load-side current of the test valve and the load-side voltage of the auxiliary valve, including: The monitoring system determines whether the load-side current of the test valve fed back by the trigger control system is within a preset load-side current range, whether the load-side voltage of the auxiliary valve fed back by the trigger control system is within a preset load-side voltage range, and whether the auxiliary valve and the test valve have been running stably for a preset time. If the load-side current is within the preset load-side current range, the load-side voltage of the auxiliary valve is within the preset load-side voltage range, and the auxiliary valve and the test valve have been running stably for a preset time, the monitoring system determines that the auxiliary valve and the test valve have passed the test; otherwise, the monitoring system determines that the auxiliary valve and the test valve have failed the test.

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