Reactive aging test method, device and system for power module

Abstract

The invention relates to a reactive power aging test method, device and system for a power module, corresponding configuration parameters are sent to an execution terminal according to current working condition step parameters in a driving working condition step list, and after it is determined that each working condition setting meets requirements according to feedback information of the execution terminal, the corresponding configuration parameters are sent to the execution terminal. And performing a corresponding aging test on the power module according to the working condition type in the current working condition step parameters. And after the power module is tested, acquiring the working condition step parameters of the next step in the driving working condition step list, switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step when the parameters change, and after the configuration parameter switching is completed, switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step. And taking the working condition step parameter of the next step as the new current working condition step parameter, and carrying out the corresponding aging test on the power module according to the working condition type in the current working condition step parameter until the corresponding test of all the working condition step parameters in the driving working condition step list is completed, so that time and labor are saved, and the test efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of power module testing, and in particular to a method, device and system for testing reactive power aging of a power module. Background Art

[0002] In the field of semiconductor testing, reactive aging testing of power modules such as IGBT and SIC is an important testing link in the field of high-end semiconductor applications. The working principle of the test is to build a test bench equipment in the factory to simulate the real aging conditions during vehicle operation. It is used to test the performance of power modules during the design and manufacturing stage of power modules and to eliminate defective products on the production line to control the factory quality of power semiconductor devices.

[0003] In traditional power module aging testing, if you want to test under multiple operating conditions (for example, testing the same set of power modules under a DC400V input and a DC500V input), you can only place the power modules on the test machine, wait for a round of testing, re-import a new operating condition file, and then repeatedly put the modules into the machine for testing until all operating conditions are tested. This is extremely time-consuming and labor-intensive, and has the disadvantage of low test efficiency. Summary of the Invention

[0004] Based on this, it is necessary to provide a power module reactive aging test method, device and system that can improve test efficiency to address the above problems.

[0005] A first aspect of the present application provides a power module reactive aging test method, comprising: Sending corresponding configuration parameters to the execution terminal according to the current working condition step parameters in the driving working condition step list, and receiving feedback information sent by the execution terminal after completing the relevant working condition settings of the power module according to the configuration parameters; After determining that each operating condition setting meets the requirements according to the feedback information, performing a corresponding aging test on the power module according to the operating condition type in the current operating condition step parameter; After completing the test on the power module, obtaining the working condition step parameters of the next step in the driving working condition step list, and switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step when there is a parameter change; After completing the configuration parameter switching, the operating condition step parameters of the next step are used as the new current operating condition step parameters, and the step of performing corresponding aging tests on the power module according to the operating condition type in the current operating condition step parameters is returned until the corresponding tests of all operating condition step parameters in the driving operating condition step list are completed.

[0006] In one embodiment, the execution terminal includes: The lower-level motor drive module is responsible for drive control, voltage and current acquisition, and drive fault judgment during aging testing; The lower computer PLC is responsible for the test process action control; The water cooler is responsible for water supply and blowing, regulating water flow and water temperature to ensure the constancy of the test environment temperature; High voltage power supply, responsible for providing high voltage input.

[0007] In one embodiment, according to the current operating condition step parameters in the driving operating condition step list, corresponding configuration parameters are sent to the execution terminal, and feedback information sent by the execution terminal after completing the relevant operating condition settings of the power module according to the configuration parameters is received, including: When the water flow is enabled according to the current working condition step parameters, the corresponding water temperature value, water flow value and water flow enable instruction are sent to the water chiller; When the output water temperature and water flow rate fed back by the water chiller are within the set value range, the corresponding drive parameters and protection value parameters are sent to the lower computer electric drive module; When the drive parameters and protection value parameter settings of the lower computer electric drive module are read back, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and high-voltage discharge relay, and to attract the high-voltage negative relay and high-voltage pre-charge relay; When the relay status returned by the lower computer PLC is consistent with the control instruction issued, the voltage value instruction of the current working condition step is sent to the high-voltage power supply; When the output voltage of the high-voltage power supply is consistent with the voltage value instruction of the current working condition step, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage discharge relay and the high-voltage pre-charge relay, and to attract the high-voltage positive relay and the high-voltage negative relay; When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, it is determined that the settings of each working condition meet the requirements.

[0008] In one embodiment, the parameter change includes at least one of a voltage change, a water flow enable change, a water flow change, a water temperature change, a working condition type change, and a working condition drive parameter and a protection value parameter change.

[0009] In one embodiment, the parameter change includes a voltage change; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step includes: Sending a command to control the lower-level motor drive module to stop driving, and after confirming that the driving state of the lower-level motor drive module has stopped by reading back, analyzing whether the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step; If the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay, and to attract the high-voltage negative relay and the high-voltage pre-charge relay; If the voltage value of the next working condition step is less than the voltage value of the current working condition step, a command is sent to the high-voltage power supply to control the high-voltage power supply to stop outputting voltage; When the state of the high-voltage power supply is read back to stop outputting voltage, a control instruction is sent to the lower-level PLC, so that the lower-level PLC controls to disconnect the high-voltage positive relay, the high-voltage negative relay and the high-voltage pre-charge relay, and to close the high-voltage discharge relay; When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, and the high voltage is discharged to the set safety voltage, the step of sending the control instruction to the lower computer PLC is executed to control the lower computer PLC to disconnect the high voltage positive relay and the high voltage discharge relay, and to attract the high voltage negative relay and the high voltage pre-charge relay.

[0010] In one embodiment, after sending a control instruction to a lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay and to attract the high-voltage negative relay and the high-voltage pre-charge relay, the following steps are further included: When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, the voltage value of the next working step is sent to the high-voltage power supply; When the output voltage of the high-voltage power supply read back matches the voltage value of the next working condition step, a control instruction is sent to the lower computer PLC, causing the lower computer PLC to disconnect the high-voltage discharge relay and the high-voltage pre-charge relay, and attract the high-voltage positive relay and the high-voltage negative relay; When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, the voltage switching is completed.

[0011] In one embodiment, the parameter change includes a water flow change; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step includes: Send instructions to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving; When the drive status of the lower computer electric drive module is read back and it stops, the water flow value of the next working step is sent to the water cooler; When the output water flow of the water chiller is read back and matches the water flow value of the next working step, the water flow switching is completed.

[0012] In one embodiment, the parameter change includes a water temperature change; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step includes: Send instructions to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving; When the drive status of the lower computer electric drive module is read back and it stops, the water temperature value of the next working condition step is sent to the water cooler; When the output water temperature of the water chiller is read back and matches the water temperature value of the next working step, the water temperature switching is completed.

[0013] In one embodiment, the parameter change includes a change in the working condition type; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step includes: When the drive type of the next working condition step is inconsistent with the drive type of the current working condition step, a command is sent to the lower computer electric drive module to control the lower computer electric drive module to stop driving; When the drive state of the lower-level computer electric drive module is read back and it is stopped, the next working step drive type instruction is sent to the lower-level computer electric drive module; When the drive type of the lower-level computer electric drive module is read back and is consistent with the drive type instruction of the next working step, the drive type switching is completed.

[0014] In one embodiment, the parameter change includes a change in a working condition driving parameter and a protection value parameter; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step includes: Send the next working condition step drive parameter and protection value parameter instructions to the lower computer electric drive module; When the drive parameters and protection value parameters of the lower-level computer electric drive module are read back and are consistent with the drive parameters and protection value parameter instructions of the next working condition step, the working condition drive parameter and protection value parameter switching is completed.

[0015] In one embodiment, the parameter change includes a water flow enable change; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step includes: Send a command to the lower-level computer's electric drive module to stop driving, and when the lower-level computer's electric drive module's driving status is read back and the water flow enable of the next working step is detected to be turned on; If so, the water temperature value, water flow value and water supply start instruction for the next working condition step are sent to the water chiller. When the output water temperature and water flow of the water chiller are matched with the water temperature and water flow values ​​sent, the water supply enable switch is completed. If not, a water blowing command is sent to the water cooler. When the water cooler is in the water blowing state, the water blowing is completed according to the set water blowing time and no fault occurs within the waiting time, and the water enabling switch is completed.

[0016] In one embodiment, the method further comprises: During the test, the lower computer electric drive module performs fault monitoring according to the protection value set in the current working condition step, and issues an alarm and shuts down the machine when a fault is detected.

[0017] In one embodiment, the method further comprises: According to the received editing instruction, an editing operation is performed on the driving condition step list; the editing operation includes at least one of adding a driving condition step, deleting a driving condition step, and updating a driving condition step.

[0018] A second aspect of the present application provides a power module reactive power aging test device, comprising: a parameter configuration module, configured to send corresponding configuration parameters to an execution terminal according to the current operating condition step parameters in the driving operating condition step list, and receive feedback information sent by the execution terminal after completing the relevant operating condition settings of the power module according to the configuration parameters; a test control module, configured to perform a corresponding aging test on the power module according to the operating condition type in the current operating condition step parameter after determining that each operating condition setting meets the requirements based on the feedback information; The parameter switching module is used to obtain the working condition step parameters of the next step in the driving working condition step list after completing the test on the power module, and switch the configuration parameters of the execution terminal according to the working condition step parameters of the next step when there is a parameter change; after completing the configuration parameter switching, the working condition step parameters of the next step are used as the new current working condition step parameters, so that the test control module again performs corresponding aging tests on the power module according to the working condition type in the current working condition step parameters until the corresponding tests of all working condition step parameters in the driving working condition step list are completed.

[0019] The third aspect of the present application provides a power module reactive aging test system, including a host computer, an industrial computer and an execution terminal, wherein the execution terminal communicates with the host computer through the industrial computer, and the host computer performs a power module reactive aging test according to the above method.

[0020] The above-mentioned power module reactive aging test method, device and system send corresponding configuration parameters to the execution terminal according to the current working condition step parameters in the driving working condition step list, and receive feedback information sent by the execution terminal after completing the relevant working condition settings of the power module according to the configuration parameters. After determining that the settings of each working condition meet the requirements based on the feedback information, the power module is subjected to corresponding aging test according to the working condition type in the current working condition step parameters. After the power module is tested, the working condition step parameters of the next step in the driving working condition step list are obtained, and when there are parameter changes, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step. After the configuration parameter switching is completed, the working condition step parameters of the next step are used as the new current working condition step parameters, and the power module is subjected to corresponding aging test again according to the working condition type in the current working condition step parameters, until the corresponding tests of all working condition step parameters in the driving working condition step list are completed, without the need to place the power module and import the working condition file multiple times, saving time and effort, and improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Flowchart of a reactive aging test method for a power module in one embodiment; Figure 2 This is a general framework diagram of a power module reactive aging test system in one embodiment; Figure 3 A general operation flow chart of working condition editing in one embodiment; Figure 4 Add a working condition flow chart for an embodiment; Figure 5 Deleting the working condition flow chart in one embodiment; Figure 6 A flowchart of an updated working condition in one embodiment; Figure 7 A schematic diagram of the overall process of reactive power aging testing of a power module in one embodiment; Figure 8 A flowchart of switching voltage for aging test in one embodiment; Figure 9 A flow chart of switching water flow in an aging test according to an embodiment; Figure 10 A flow chart of switching water temperature for an aging test in one embodiment; Figure 11 A diagram showing the switching working condition types of an aging test in one embodiment; Figure 12 A flowchart of switching driving parameters and protection parameters for an aging test in one embodiment; Figure 13 A flowchart of switching water flow enabling for an aging test in one embodiment; Figure 14This is a structural block diagram of a power module reactive power aging test device according to one embodiment; Figure 15 FIG. 1 is an electrical structure diagram of a power module reactive aging test system in one embodiment. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0023] In one embodiment, Figure 1 As shown, a power module reactive aging test method is provided, comprising: Step S110: sending corresponding configuration parameters to the execution terminal according to the current operating condition step parameters in the driving operating condition step list, and receiving feedback information sent by the execution terminal after completing the relevant operating condition settings of the power module according to the configuration parameters.

[0024] Specifically, the driving working condition step list stores multiple sets of working condition step parameters, and each set of working condition step parameters is used to set the working condition state of the power module and perform corresponding aging tests on the power module. When performing the aging test, the host computer selects the current working condition step parameters according to the order of the working condition step parameters in the working condition step list. For example, when the test starts, the first working condition step parameter in the driving working condition step list is used as the current working condition step parameter, and the corresponding configuration parameters are sent to the execution terminal. After the execution terminal sets the working condition of the power module according to the configuration parameters, it sends corresponding feedback information to the host computer so that the host computer can know whether the working condition setting is completed.

[0025] like Figure 2 As shown, the host computer, acting as the primary controller, communicates with the execution terminal via an industrial computer and directs all test processes. The specific structure of the execution terminal will vary depending on the operating condition settings for the power module. In this embodiment, the execution terminal includes: a lower-computer electric drive module, responsible for drive control, voltage and current acquisition, and drive fault diagnosis during aging testing; a lower-computer PLC, responsible for test process action control; a water chiller, responsible for water supply and blowing, regulating water flow and temperature to ensure constant test environment temperature; and a high-voltage power supply, specifically a DC (direct current) high-voltage power supply, responsible for providing high-voltage input.

[0026] In one embodiment, the method further includes: performing an editing operation on the driving condition step list according to the received editing instruction; the editing operation includes at least one of adding a driving condition step, deleting a driving condition step, and updating a driving condition step.

[0027] Before the formal aging test, the test condition file must be edited on the host computer interface according to the test conditions. Figure 3 As shown, in order to achieve a higher degree of freedom in the working condition test, in the editing of the working condition test file, the relevant operations are to add a driving working condition step, delete a driving working condition step, and update a driving working condition step. A working condition type and a set of related parameters such as driving values, protection values, and power module performance judgment values ​​are bound into a whole as a set of working condition step parameters, and then add, delete, and modify operations (such as adding: Figure 4 As shown, delete: Figure 5 As shown, change: Figure 6 As shown in the figure), a list of driving condition steps is finally obtained, that is, the edited test condition file.

[0028] Step S120: After determining that each operating condition setting meets the requirements according to the feedback information, a corresponding aging test is performed on the power module according to the operating condition type in the current operating condition step parameter.

[0029] Specific operating condition types include drive operating condition aging and stalled rotor operating condition aging. The host computer determines the operating state of the power module based on the received feedback information. If it is consistent with the theoretical state corresponding to the issued configuration parameters, it determines that the various operating condition settings meet the requirements and performs the corresponding aging test on the power module based on the operating condition type in the current operating condition step parameters.

[0030] Step S130: After the power module is tested, the operating condition step parameters of the next step in the driving operating condition step list are obtained, and when there is a parameter change, the configuration parameters of the execution terminal are switched according to the operating condition step parameters of the next step.

[0031] Specifically, after the host computer completes the current aging test on the power module, it discards the first operating condition step parameters in the driving operating condition step list, promotes the next operating condition step parameters to the new first operating condition step parameters, and then determines whether the current first operating condition step parameters have changed from the tested operating condition step parameters. If the parameters have changed, the configuration parameters of the execution terminal are switched according to the current first operating condition step parameters. It is understood that in other embodiments, after the current aging test on the power module is completed, it is also possible to directly find the operating condition step parameters of the next step in order to determine whether there are parameter changes.

[0032] Step S140: After completing the configuration parameter switching, the operating condition step parameters of the next step are used as the new current operating condition step parameters, and the step of performing corresponding aging tests on the power module according to the operating condition type in the current operating condition step parameters is returned until the corresponding tests of all operating condition step parameters in the driving operating condition step list are completed.

[0033] After completing the configuration parameter switch, the host computer again executes step S120 to perform a corresponding aging test on the power module according to the operating condition type of the new current operating condition step parameters. This cycle continues until the corresponding aging test has been completed for each set of operating condition step parameters in the drive operating condition step list. It will be understood that if there are no parameter changes in the operating condition step parameters of the next step, there is no need to switch the configuration parameters, and the power module is directly subjected to the corresponding aging test according to the operating condition type in the new current operating condition step parameters.

[0034] This eliminates the need to repeatedly import condition files or remove and reinstall modules from the device when testing a group of power modules under multiple operating conditions. Prior to testing, multiple sets of condition step parameters are configured into a single condition file. During testing, the test program corresponding to each set of condition step parameters is executed sequentially in the order listed. Before each test program is executed, the host computer verifies whether each set of configuration parameters has been set. If a setting error occurs, an alarm is issued immediately, improving safety. If the configuration parameters remain unchanged, there's no need to switch them. If they do change, the system automatically configures the new parameters and completes the new test program until all listed condition steps are executed. This significantly improves testing efficiency and enhances the comprehensiveness of test conditions within a single test flow. Users can also edit the test condition files to add, delete, and modify them, allowing for the free combination of various test conditions and increasing the flexibility of burn-in testing. Since each set of test condition parameters is set independently, the protection parameters under different working conditions can also be set independently. During the test, the lower-level computer electric drive module performs real-time fault monitoring based on the protection parameters corresponding to the current working conditions, and promptly alarms and shuts down when a fault occurs. This can realize the segmented protection function. Compared with the existing technology, which can only set one set of protection parameters in the entire aging test cycle, resulting in possible abnormalities that cannot be identified, it greatly improves safety.

[0035] In one embodiment, Figure 7 As shown, step S110 includes: Step 11: When the water flow enable function is enabled based on the parameters of the current operating step, the corresponding water temperature and flow values, along with a water flow enable command, are sent to the water chiller. For ease of understanding, using the first operating step as an example, if the water flow enable function for the first operating step is enabled, the host computer sends the water temperature and flow values ​​for the first operating step, along with a water flow enable command, to the water chiller. If the water flow enable function for the first operating step is not enabled, the host computer directly sends the corresponding drive parameters and protection value parameters to the lower computer's electric drive module.

[0036] Step 12: When the output water temperature and water flow rate reported by the water chiller are within the set range, the corresponding drive parameters and protection value parameters are sent to the lower-level computer's electrical drive module. The set range is determined based on the sent drive parameters and protection value parameters, as well as the corresponding allowable error. If the output water temperature and water flow rate reported by the water chiller are within the set range, the upper-level computer sends the drive parameters and protection value parameters for the first operating condition to the lower-level computer's electrical drive module. If the output water temperature and water flow rate reported by the water chiller are outside the set range, the upper-level computer issues an alarm and shuts down the system.

[0037] Step 13: After reading back the drive parameters and protection value settings of the slave computer's electric drive module, a control command is sent to the slave computer's PLC, causing it to disconnect the high-voltage positive relay and high-voltage discharge relay and close the high-voltage negative relay and high-voltage pre-charge relay. If the drive parameters and protection value settings of the slave computer's electric drive module match the required settings, the host computer sends a control command to the slave computer's PLC to disconnect the high-voltage positive relay and high-voltage discharge relay and close the high-voltage negative relay and high-voltage pre-charge relay. If the parameter settings are inconsistent, the host computer issues an alarm and shuts down the system.

[0038] Step 14: When the relay status returned by the slave PLC matches the control command issued, the host computer sends the voltage value command for the current operating step to the high-voltage power supply. If the relay status returned by the slave PLC matches the control command issued, the host computer sends the voltage value command for the first operating step to the high-voltage power supply. If the relay status does not match the control command issued, the host computer issues an alarm and shuts down the system.

[0039] Step 15: When the readback output voltage of the high-voltage power supply matches the voltage value command for the current operating step, a control command is sent to the slave PLC, causing it to disconnect the high-voltage discharge relay and pre-charge relay and close the high-voltage positive relay and negative relay. If the output voltage of the high-voltage power supply is within the corresponding set value range, it is considered consistent with the voltage value command for the first operating step. The host computer then issues a control command to disconnect the high-voltage discharge relay and pre-charge relay and close the high-voltage positive relay and negative relay. If the output voltage of the high-voltage power supply is inconsistent with the voltage value command for the first operating step, the host computer issues an alarm and shuts down the system.

[0040] Step 16: When the relay status reported by the slave PLC is consistent with the control command issued, determine that the operating condition settings meet the requirements. If the relay status reported by the slave PLC is consistent with the control command issued, then the operating condition settings meet the requirements. Otherwise, the upper computer will alarm and shut down.

[0041] like Figure 15As shown, a high-voltage power supply (such as a DC power supply) is connected to a high-voltage distribution box, which is then connected to a power module (such as a power semiconductor device) via thin-film capacitors. The high-voltage positive relay K1, high-voltage pre-charge relay K2, high-voltage negative relay K3, and high-voltage discharge relay K4 are all installed in the high-voltage distribution box. The high-voltage distribution box may also include a fuse FU1, a pre-charge resistor R1, and a discharge resistor R2. The high-voltage positive relay K1 and high-voltage negative relay K3 are respectively installed in the positive (+) and negative (-) output circuits between the high-voltage power supply and the power module. A fuse FU1 is also installed in the positive output circuit to prevent excessive circuit current from damaging components and equipment. By controlling the on / off state of the high-voltage positive relay K1 and high-voltage negative relay K3, the high-voltage power supply to the power module can be controlled. The high-voltage pre-charge relay K2 is connected in series with the pre-charge resistor R1 and then in parallel with the high-voltage positive relay K1. When the high-voltage pre-charge relay K2 is closed and the high-voltage positive relay K1 is closed, the output current and voltage in the positive output circuit can be reduced. The high-voltage discharge relay K4 is connected in series with the discharge resistor R2, with one end connected to the positive output circuit and the other end connected to the negative output circuit. After the aging test is completed, it is turned on to discharge the pressure. The above relays are directly controlled by the lower-level PLC, and can also be indirectly controlled by the upper-level computer sending control instructions to the lower-level PLC.

[0042] In one embodiment, the method further includes: performing fault monitoring according to the protection value set in the current working condition step by the lower computer electric drive module during the test process, and issuing an alarm and shutting down the machine when a fault is detected.

[0043] Reference Figure 7 When the power module is placed in the test system for aging testing, the upper computer sequentially executes the individual step conditions in the drive condition step list. When entering the test for the first time, it first communicates with the water cooler, the lower computer electric drive module, the lower computer PLC, and the high-voltage power supply based on the first step parameters in the drive condition step list. First, the flow rate and water temperature reach a stable range. If the water flow is not enabled in the first step, the process of interacting with the water cooler is skipped. The drive parameters and protection parameters are then set for the lower computer electric drive module. The aging test is prepared and the drive is monitored for abnormalities. The upper computer then communicates with the lower computer PLC and the high-voltage power supply to input the set high voltage to the power module. Finally, the drive condition aging or locked rotor condition aging is performed according to the operating condition type selected in the operating condition step. When the aging of a working condition step is completed, the parameters of the first working condition step in the drive condition step list are discarded. If the drive condition step list is empty at this time, it means that all working condition steps have been executed and the entire aging test is complete. If the driving operating condition step list is not empty and there are operating condition steps, the first step in the remaining operating condition steps is promoted to the first operating condition step, and then it is determined whether the parameters of the current first operating condition step and the operating condition step just tested have changed.

[0044] The parameter changes during the entire aging test process are divided into six categories: 1. Voltage change, 2. Water flow change, 3. Water flow change, 4. Water temperature change, 5. Working condition type change, 6. Working condition drive parameter and protection value parameter change. If one or more of these parameters change, the process will jump to the corresponding parameter switching process, such as Figure 8 Aging test switching voltage process, Figure 9 Aging test switching water flow process, Figure 10 Aging test switching water temperature process, Figure 11 Aging test switching condition type process, Figure 12 Aging test drive parameter and protection parameter switching process, and Figure 13 The aging test switches to the water-enabling process. After all process changes are completed, the corresponding drive aging test or locked-rotor aging test continues according to the current first step operating condition type until there are no more operating conditions in the drive operating condition step list, and the entire aging test is complete. Throughout the aging test cycle, the lower-level computer's electric drive module determines in real time whether any abnormalities have occurred based on the latest protection values ​​set for the current operating condition step, and promptly issues an alarm and shuts down to protect the power module and test system.

[0045] In one embodiment, the parameter change includes a voltage change. Figure 8 As shown, in step S130, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Step 31: Send a command to the lower-level motor drive module to stop driving. After confirming that the lower-level motor drive module has stopped driving, the upper-level computer analyzes whether the voltage value of the next operating step is greater than or equal to the voltage value of the current operating step. When a voltage switch is required, the upper-level computer first sends a command to the lower-level motor drive module to shut down and stop driving. After confirming that the lower-level motor drive module has stopped driving, the upper-level computer compares whether the voltage value of the next operating step is greater than or equal to the voltage value of the current operating step. If the lower-level motor drive module has not stopped driving, the upper-level computer issues an alarm and shuts down.

[0046] Step 32: If the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step, the upper computer sends a control instruction to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay, and to attract the high-voltage negative relay and the high-voltage pre-charge relay. If the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step, the upper computer sends a control instruction to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay, and to attract the high-voltage negative relay and the high-voltage pre-charge relay. Figure 15As shown in the figure, during the high voltage rising stage, the DC power supply outputs a large voltage instantaneously, which may cause the entire circuit to short-circuit. To prevent damage to components and equipment, the high voltage is first pre-charged until the voltage is stable. The high voltage pre-charge relay K2 and the high voltage negative relay K3 are energized, and the high voltage positive relay K1 and the high voltage discharge relay K4 are disconnected. The circuit contains a pre-charge resistor R1 to consume energy. After the voltage output is stable, the high voltage positive relay K1 is energized, and the high voltage pre-charge relay K2 is disconnected, and then the test is carried out.

[0047] Step 33: If the voltage value of the next operating step is less than the voltage value of the current operating step, a command is sent to the high-voltage power supply to control the high-voltage power supply to stop outputting voltage. If the voltage value of the next operating step is less than the voltage value of the current operating step, the host computer sends a command to the high-voltage power supply to control the high-voltage power supply to stop outputting voltage so that the next pressure relief operation can be performed.

[0048] Step 34: When the high-voltage power supply is read back to stop outputting voltage, a control instruction is sent to the lower-level PLC to make the lower-level PLC control the disconnection of the high-voltage positive relay, the high-voltage negative relay and the high-voltage pre-charge relay, and the closure of the high-voltage discharge relay. If the high-voltage power supply stops outputting voltage, the upper-level computer sends a control instruction to the lower-level PLC to disconnect the high-voltage positive relay, the high-voltage negative relay and the high-voltage pre-charge relay, and the closure of the high-voltage discharge relay. If the high-voltage power supply does not stop outputting voltage, the upper-level computer will alarm and shut down. Figure 15 As shown in the figure, in the high-voltage discharge stage, after the DC power supply stops outputting, there is still energy in the circuit because the circuit contains capacitor components. Therefore, the voltage in the circuit needs to be discharged, the high-voltage discharge relay K4 is attracted, and the high-voltage positive relay K1, high-voltage pre-charge relay K2, and high-voltage negative relay K3 are disconnected, and the energy is released through the discharge resistor R2.

[0049] Step 35: If the relay status reported back by the slave PLC is consistent with the control command issued, and the high voltage has been released to the set safety voltage, execute the step in step 32 to send a control command to the slave PLC, causing it to disconnect the high-voltage positive relay and high-voltage discharge relay and close the high-voltage negative relay and high-voltage precharge relay. If the relay status is inconsistent with the control command issued, or if the system high voltage has not been released to the safe voltage, the master computer will issue an alarm and shut down the system.

[0050] Furthermore, in step 32, after sending a control instruction to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay and to attract the high-voltage negative relay and the high-voltage pre-charge relay, step S130 further includes: Step 36: When the relay status reported back by the slave PLC is consistent with the control command issued, the voltage value for the next operating step is sent to the high-voltage power supply. If the relay status reported back by the slave PLC is consistent with the control command issued, the host computer sends the voltage value for the next operating step to the high-voltage power supply. If the relay status reported back by the slave PLC is inconsistent with the control command issued, the host computer issues an alarm and shuts down the system.

[0051] Step 37: When the readback output voltage of the high-voltage power supply matches the voltage value for the next operating step, a control command is sent to the slave PLC, causing it to disconnect the high-voltage discharge relay and pre-charge relay and close the high-voltage positive relay and negative relay. If the output voltage of the high-voltage power supply is equal to the voltage value for the next operating step, or the difference is within the allowable range (i.e., the output voltage is within the set value range), they are considered matched. The master computer then sends a control command to the slave PLC, disconnecting the high-voltage discharge relay and pre-charge relay and closing the high-voltage positive relay and negative relay. If they do not match, the master computer issues an alarm and shuts down the system.

[0052] Step 38: When the relay status reported back by the slave PLC is consistent with the control command issued, the voltage switching is complete. If the relay status reported back by the slave PLC is consistent with the control command issued, the voltage switching is complete. If the relay status reported back by the slave PLC is inconsistent with the control command issued, the master computer issues an alarm and shuts down the system.

[0053] In one embodiment, the parameter change includes a water flow change. Figure 9 As shown, in step S130, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Step 41: Sending a command to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving. When the water flow needs to be switched, the upper computer first sends a command to the lower computer's electric drive module to control the lower computer's electric drive module to close the pipe and stop driving.

[0054] Step 42: When the lower-computer motor drive module's driving status is read back and the water flow rate value for the next operating step is sent to the water chiller, the upper computer sends the water flow rate value for the next operating step to the water chiller. If the lower-computer motor drive module does not stop driving, the upper computer issues an alarm and shuts down the machine.

[0055] Step 43: When the water chiller's output water flow rate matches the water flow rate value for the next operating step, the water flow switching is complete. If the water chiller's output water flow rate is equal to the water flow rate value for the next operating step, or the difference is within the allowable range (i.e., the output water flow rate is within the set range), the two are considered to match, and the water flow switching is complete. If the two do not match, the host computer issues an alarm and shuts down the system.

[0056] In one embodiment, the parameter change includes a water temperature change. Figure 10 As shown, in step S130, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Step 51: Sending a command to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving. When the water temperature needs to be switched, the upper computer first sends a command to the lower computer's electric drive module to control the lower computer's electric drive module to shut down and stop driving.

[0057] Step 52: When the lower-computer motor drive module's driving status is read back and the drive module stops, the upper computer sends the water temperature value for the next operating step to the water chiller. If the lower-computer motor drive module does not stop driving, the upper computer issues an alarm and shuts down the machine.

[0058] Step 53: When the output water temperature of the water chiller matches the water temperature value for the next operating step, the water temperature switch is complete. If the output water temperature of the water chiller is equal to the water temperature value for the next operating step, or the difference is within the allowable range (i.e., the output water temperature is within the set range), the two are considered to match, and the water temperature switch is complete. If the two do not match, the host computer issues an alarm and shuts down the system.

[0059] In one embodiment, the parameter change includes a change in the operating condition type. Figure 11 As shown, in step S130, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Step 61: When the drive type of the next working condition step is inconsistent with the drive type of the current working condition step, a command is sent to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving. If the drive type of the next working condition step is inconsistent with the drive type of the current working condition step, the upper computer first sends a command to the lower computer's electric drive module to control the lower computer's electric drive module to shut down and stop driving.

[0060] Step 62: When the drive status of the lower-machine electric drive module is read back and it is stopped, the host computer sends the next working condition step drive type instruction to the lower-machine electric drive module. When the lower-machine electric drive module stops driving, the host computer sends the next working condition step drive type instruction to the host computer electric drive module. If the lower-machine electric drive module does not stop driving, the host computer alarms and shuts down.

[0061] Step 63: When the drive type of the lower-level motor drive module is read back and is consistent with the drive type instruction for the next working condition step, the drive type switching is completed. When the drive type of the lower-level motor drive module is read back by the upper-level motor drive module and is consistent with the drive type instruction for the next working condition step, the drive type switching is completed; otherwise, the upper-level motor drive module generates an alarm and stops.

[0062] In one embodiment, the parameter changes include changes in operating condition driving parameters and protection value parameters. Figure 12As shown, in step S130, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Step 71: Send the next working condition step drive parameter and protection value parameter instruction to the lower computer electric drive module. When the drive parameter and protection value parameter need to be switched, the upper computer sends the next working condition step drive parameter and protection value parameter instruction to the lower computer electric drive module.

[0063] Step 72: When the drive parameters and protection value parameters of the lower-level motor drive module are read back and are consistent with the drive parameters and protection value parameter instructions for the next working condition step, the working condition drive parameter and protection value parameter switching is completed. When the drive parameters and protection value parameters of the lower-level motor drive module are read back by the upper-level motor drive module and are consistent with the drive parameters and protection value parameter instructions for the next working condition step, the parameter switching is completed; otherwise, the upper-level motor drive module generates an alarm and shuts down.

[0064] In one embodiment, the parameter change includes a water flow enable change. Figure 13 As shown, in step S130, the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Step 81: Send a command to the lower-level computer's electric drive module to stop driving. When the lower-level computer's electric drive module's driving status is read back as stopped, check whether the water flow enable for the next operating step is on. When the water flow enable needs to be switched, the upper-level computer first sends a command to the lower-level computer's electric drive module to control the lower-level computer's electric drive module to shut down the pipe and stop driving. If the lower-level computer's electric drive module stops driving, check whether the water flow enable for the next operating step is on. If so, execute step 82; if not, execute step 83. If the lower-level computer's electric drive module does not stop driving, the upper-level computer issues an alarm and shuts down.

[0065] Step 82: The water temperature and flow rate values ​​for the next operating step, along with a water flow enable command, are sent to the chiller. If the chiller's output water temperature and flow rate match the values ​​sent, the water flow enable switch is complete. The host computer sends the water temperature and flow rate values ​​for the next operating step, along with a water flow enable command, to the chiller. If the chiller's output water temperature and flow rate match the values ​​sent, or if the error is within the allowable range (i.e., the chiller's output water temperature and flow rate are within the set range), the water flow enable switch is complete. If there is a mismatch, the host computer can also issue an alarm and shut down the chiller.

[0066] Step 83: Send a water-blowing command to the water-cooling machine. If the host computer reads back that the water-cooling machine is in the water-blowing state, wait for the water-blowing to complete according to the set water-blowing time. If no fault occurs during the waiting time, the water-enabling switch is complete. The specific length of the water-blowing time is not unique and can be set according to actual testing needs. After sending the water-blowing command to the water-cooling machine, if the host computer reads back that the water-cooling machine is in the water-blowing state, wait for the water-blowing to complete according to the set water-blowing time. During the waiting time, the system is continuously monitored for faults. If no fault occurs, the water-enabling switch is complete. If the host computer reads back that the water-cooling machine is not in the water-blowing state, or if a system fault occurs during the waiting time, the host computer issues an alarm and shuts down the system.

[0067] The above-mentioned power module reactive power aging test method has the following advantages: Advantage 1: High efficiency. The corresponding test conditions are edited at one time according to the required test conditions. The power module only needs to be placed in the test machine once. The equipment will automatically execute the process according to the edited test conditions and finally issue the final results.

[0068] Advantage 2: Comprehensive test conditions. The working condition type, drive parameters, protection values, and power module performance judgment values ​​can be freely combined and matched according to the steps.

[0069] Advantage 3: Fast protection speed. The upper computer sends the protection value to the lower computer, which automatically determines the value, saving communication time and improving protection speed.

[0070] Advantage 4: Full-cycle segmented protection. Each test condition step has its own set of protection values, which can be adjusted according to the size of the driving current executed in the step.

[0071] Advantage 5: A aging test can be performed without water. Advantages of aging test without water: Due to the lack of water for heat dissipation, the temperature of the power module will rise rapidly during the aging test. Setting different temperature protection values ​​can quickly determine the junction temperature that the power module can withstand.

[0072] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0073] Based on the same inventive concept, embodiments of the present application also provide a power module reactive aging test device for implementing the aforementioned power module reactive aging test method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more power module reactive aging test device embodiments provided below can be found in the limitations of the power module reactive aging test method described above and will not be further elaborated here.

[0074] In one embodiment, Figure 14 As shown, a power module reactive aging test device is also provided, including: a parameter configuration module 110, a test control module 120 and a parameter switching module 130, wherein: The parameter configuration module 110 is used to send corresponding configuration parameters to the execution terminal according to the current working condition step parameters in the driving working condition step list, and receive feedback information sent by the execution terminal after completing the relevant working condition settings of the power module according to the configuration parameters.

[0075] The test control module 120 is configured to perform a corresponding aging test on the power module according to the operating condition type in the current operating condition step parameters after determining that the operating condition settings meet the requirements based on the feedback information.

[0076] The parameter switching module 130 is used to obtain the operating condition step parameters of the next step in the driving operating condition step list after completing the test on the power module, and switch the configuration parameters of the execution terminal according to the operating condition step parameters of the next step when there is a parameter change; after completing the configuration parameter switching, the operating condition step parameters of the next step are used as the new current operating condition step parameters, so that the test control module 120 again performs corresponding aging tests on the power module according to the operating condition type in the current operating condition step parameters until the corresponding tests of all operating condition step parameters in the driving operating condition step list are completed.

[0077] In one embodiment, when the parameter configuration module 110 determines to turn on the water flow enable according to the current working condition step parameters, the corresponding water temperature value, water flow value, and water flow start instruction are sent to the water chiller; when the output water temperature and water flow feedback from the water chiller are within the set value range, the corresponding drive parameters and protection value parameters are sent to the lower computer electric drive module; when the drive parameters and protection value parameters of the lower computer electric drive module are read back and the setting is completed, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay, and to attract the high-voltage negative relay. Electrical appliances and high-voltage pre-charge relays; when the relay status returned by the lower computer PLC is consistent with the control instruction issued, the current working condition step voltage value instruction is sent to the high-voltage power supply; when the output voltage of the high-voltage power supply is consistent with the current working condition step voltage value instruction, the control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage discharge relay and the high-voltage pre-charge relay, and to attract the high-voltage positive relay and the high-voltage negative relay; when the relay status fed back by the lower computer PLC is consistent with the control instruction issued, it is determined that the settings of each working condition meet the requirements.

[0078] In one embodiment, the parameter change includes a voltage change; the parameter switching module 130 sends an instruction to control the lower-level computer electric drive module to stop driving, and after reading back to determine that the driving state of the lower-level computer electric drive module has stopped, analyzes whether the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step; if the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step, a control instruction is sent to the lower-level computer PLC to control the lower-level computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay, and to attract the high-voltage negative relay and the high-voltage pre-charge relay; if the voltage value of the next working condition step is less than .... Send instructions to the high-voltage power supply to control the high-voltage power supply to stop outputting voltage; when the status of the high-voltage power supply is read back to stop outputting voltage, send a control instruction to the lower-computer PLC to make the lower-computer PLC control to disconnect the high-voltage positive relay, high-voltage negative relay and high-voltage pre-charge relay, and to attract the high-voltage discharge relay; when the relay status fed back by the lower-computer PLC is consistent with the control instruction sent, and the high voltage is discharged to the set safety voltage, send a control instruction to the lower-computer PLC to control the lower-computer PLC to disconnect the high-voltage positive relay and high-voltage discharge relay, and to attract the high-voltage negative relay and high-voltage pre-charge relay.

[0079] In one embodiment, the parameter switching module 130 is also used to send the voltage value of the next operating step to the high-voltage power supply when the relay state fed back by the lower-computer PLC is consistent with the control instruction issued; when the output voltage of the high-voltage power supply read back matches the voltage value of the next operating step, send a control instruction to the lower-computer PLC to make the lower-computer PLC disconnect the high-voltage discharge relay and the high-voltage pre-charge relay, and attract the high-voltage positive relay and the high-voltage negative relay; when the relay state fed back by the lower-computer PLC is consistent with the control instruction issued, the voltage switching is completed.

[0080] In one embodiment, the parameter change includes a water flow change; the parameter switching module 130 sends an instruction to the lower-level computer electric drive module to control the lower-level computer electric drive module to stop driving; when the driving state of the lower-level computer electric drive module is read back and it is stopped, the water flow value of the next working condition step is sent to the water cooler; when the output water flow of the water cooler is read back and it matches the water flow value of the next working condition step, the water flow switching is completed.

[0081] In one embodiment, the parameter change includes a water temperature change; the parameter switching module 130 sends an instruction to the lower-level computer electric drive module to control the lower-level computer electric drive module to stop driving; when the driving state of the lower-level computer electric drive module is read back and it is found that the driving state is stopped, the water temperature value of the next working condition step is sent to the water cooler; when the output water temperature of the water cooler is read back and it matches the water temperature value of the next working condition step, the water temperature switching is completed.

[0082] In one embodiment, the parameter change includes a change in the working condition type; when the drive type of the next working condition step is inconsistent with the drive type of the current working condition step, the parameter switching module 130 sends an instruction to the lower computer electric drive module to control the lower computer electric drive module to stop driving; when the drive state of the lower computer electric drive module is read back and stops, the next working condition step drive type instruction is sent to the lower computer electric drive module; when the drive type of the lower computer electric drive module is read back and is consistent with the drive type instruction of the next working condition step, the drive type switching is completed.

[0083] In one embodiment, the parameter changes include changes in the operating condition drive parameters and protection value parameters; the parameter switching module 130 sends the next operating condition step drive parameter and protection value parameter instructions to the lower computer electric drive module; when the drive parameters and protection value parameters of the lower computer electric drive module are read back and are consistent with the next operating condition step drive parameter and protection value parameter instructions, the operating condition drive parameter and protection value parameter switching is completed.

[0084] In one embodiment, the parameter change includes a change in water flow enable; the parameter switching module 130 sends an instruction to the lower-level computer electric drive module to stop driving, and when the driving state of the lower-level computer electric drive module is read back and it is stopped, it detects whether the water flow enable of the next working condition step is turned on; if so, the water temperature value, water flow value and the water flow start instruction of the next working condition step are sent to the water cooler, and when the output water temperature and water flow of the water cooler are read back and match the water temperature value and water flow value issued, the water flow enable switching is completed; if not, a water blowing instruction is sent to the water cooler, and when it is read back that the water cooler is in the water blowing state, the water blowing is waited for to be completed according to the set water blowing time, and no fault occurs within the waiting time, and the water flow enable switching is completed.

[0085] In one embodiment, the parameter configuration module 110 is further configured to edit the list of driving condition steps according to the received editing instruction; the editing operation includes at least one of adding a driving condition step, deleting a driving condition step, and updating a driving condition step.

[0086] In one embodiment, the test control module 120 is further configured to perform fault monitoring according to the protection value set in the current working step during the test process through the lower computer electric drive module, and to issue an alarm and shut down the machine when a fault is detected.

[0087] Each module in the power module reactive power aging test device described above can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0088] In one embodiment, a power module reactive aging test system is also provided, including a host computer, an industrial computer and an execution terminal. The execution terminal communicates with the host computer through the industrial computer, and the host computer performs the power module reactive aging test according to the above method. Figure 2 As shown in the figure, the execution terminal includes: a lower-level computer electric drive module, which is responsible for drive control, voltage and current acquisition, and drive fault judgment during aging testing; a lower-level computer PLC, which is responsible for test process action control; a water cooler, which is responsible for water supply and blowing, and regulating water flow and water temperature to ensure the constancy of the test environment temperature; and a high-voltage power supply, specifically a DC (direct current) high-voltage power supply, which is responsible for providing high-voltage input.

[0089] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A power module reactive aging test method, characterized in that: include: Sending corresponding configuration parameters to the execution terminal according to the current working condition step parameters in the driving working condition step list, and receiving feedback information sent by the execution terminal after completing the relevant working condition settings of the power module according to the configuration parameters; After determining that each operating condition setting meets the requirements according to the feedback information, performing a corresponding aging test on the power module according to the operating condition type in the current operating condition step parameter; After completing the test on the power module, obtaining the working condition step parameters of the next step in the driving working condition step list, and switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step when there is a parameter change; After completing the configuration parameter switching, the operating condition step parameters of the next step are used as the new current operating condition step parameters, and the step of performing corresponding aging tests on the power module according to the operating condition type in the current operating condition step parameters is returned until the corresponding tests of all operating condition step parameters in the driving operating condition step list are completed.

2. The method according to claim 1, characterized in that The execution terminal includes: The lower-level motor drive module is responsible for drive control, voltage and current acquisition, and drive fault judgment during aging testing; The lower computer PLC is responsible for the test process action control; The water cooler is responsible for water supply and blowing, regulating water flow and water temperature to ensure the constancy of the test environment temperature; High voltage power supply, responsible for providing high voltage input.

3. The method according to claim 2, characterized in that According to the current operating condition step parameters in the driving operating condition step list, corresponding configuration parameters are sent to the execution terminal, and feedback information sent by the execution terminal after completing the relevant operating condition settings of the power module according to the configuration parameters is received, including: When the water flow is enabled according to the current working condition step parameters, the corresponding water temperature value, water flow value and water flow enable instruction are sent to the water chiller; When the output water temperature and water flow rate fed back by the water chiller are within the set value range, the corresponding drive parameters and protection value parameters are sent to the lower computer electric drive module; When the drive parameters and protection value parameter settings of the lower computer electric drive module are read back, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and high-voltage discharge relay, and to attract the high-voltage negative relay and high-voltage pre-charge relay; When the relay status returned by the lower computer PLC is consistent with the control instruction issued, the voltage value instruction of the current working condition step is sent to the high-voltage power supply; When the output voltage of the high-voltage power supply is consistent with the voltage value instruction of the current working condition step, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage discharge relay and the high-voltage pre-charge relay, and to attract the high-voltage positive relay and the high-voltage negative relay; When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, it is determined that the settings of each working condition meet the requirements.

4. The method according to claim 2, characterized in that The parameter changes include: voltage changes, water flow enable changes, water flow changes, water temperature changes, working condition type changes, and at least one of working condition drive parameter and protection value parameter changes.

5. The method according to claim 4, characterized in that Parameter changes include voltage changes; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step, including: Sending a command to control the lower-level motor drive module to stop driving, and after confirming that the driving state of the lower-level motor drive module has stopped by reading back, analyzing whether the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step; If the voltage value of the next working condition step is greater than or equal to the voltage value of the current working condition step, a control instruction is sent to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and the high-voltage discharge relay, and to attract the high-voltage negative relay and the high-voltage pre-charge relay; If the voltage value of the next working condition step is less than the voltage value of the current working condition step, a command is sent to the high-voltage power supply to control the high-voltage power supply to stop outputting voltage; When the state of the high-voltage power supply is read back to stop outputting voltage, a control instruction is sent to the lower-level PLC, so that the lower-level PLC controls to disconnect the high-voltage positive relay, the high-voltage negative relay and the high-voltage pre-charge relay, and to close the high-voltage discharge relay; When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, and the high voltage is discharged to the set safety voltage, the step of sending the control instruction to the lower computer PLC is executed to control the lower computer PLC to disconnect the high voltage positive relay and the high voltage discharge relay, and to attract the high voltage negative relay and the high voltage pre-charge relay.

6. The method according to claim 5, characterized in that Sending control instructions to the lower computer PLC to control the lower computer PLC to disconnect the high-voltage positive relay and high-voltage discharge relay, and to attract the high-voltage negative relay and high-voltage pre-charge relay, also includes: When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, the voltage value of the next working step is sent to the high-voltage power supply; When the output voltage of the high-voltage power supply read back matches the voltage value of the next working condition step, a control instruction is sent to the lower computer PLC, causing the lower computer PLC to disconnect the high-voltage discharge relay and the high-voltage pre-charge relay, and attract the high-voltage positive relay and the high-voltage negative relay; When the relay status fed back by the lower computer PLC is consistent with the control instruction issued, the voltage switching is completed.

7. The method according to claim 4, characterized in that Parameter changes include water flow changes; switching the configuration parameters of the execution terminal according to the working condition step parameters of the next step, including: Send instructions to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving; When the drive status of the lower computer electric drive module is read back and it stops, the water flow value of the next working step is sent to the water cooler; When the output water flow of the water chiller is read back and matches the water flow value of the next working step, the water flow switching is completed.

8. The method according to claim 4, characterized in that Parameter changes include water temperature changes; the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Send instructions to the lower computer's electric drive module to control the lower computer's electric drive module to stop driving; When the drive status of the lower computer electric drive module is read back and stops, the water temperature value of the next working condition step is sent to the water cooler; When the output water temperature of the water chiller is read back and matches the water temperature value of the next working step, the water temperature switching is completed.

9. The method according to claim 4, characterized in that Parameter changes include changes in the type of operating condition; Switch the configuration parameters of the execution terminal according to the working condition step parameters of the next step, including: When the drive type of the next working condition step is inconsistent with the drive type of the current working condition step, a command is sent to the lower computer electric drive module to control the lower computer electric drive module to stop driving; When the drive state of the lower-level computer electric drive module is read back and it is stopped, the next working step drive type instruction is sent to the lower-level computer electric drive module; When the drive type of the lower-level computer electric drive module is read back and is consistent with the drive type instruction of the next working step, the drive type switching is completed.

10. The method according to claim 4, characterized in that Parameter changes include changes in operating condition drive parameters and protection value parameters; the configuration parameters of the execution terminal are switched according to the operating condition step parameters of the next step, including: Send the next working condition step drive parameter and protection value parameter instructions to the lower computer electric drive module; When the drive parameters and protection value parameters of the lower-level computer electric drive module are read back and are consistent with the drive parameters and protection value parameter instructions of the next working condition step, the working condition drive parameters and protection value parameters are switched.

11. The method according to claim 4, characterized in that Parameter changes include water flow enable changes; the configuration parameters of the execution terminal are switched according to the working condition step parameters of the next step, including: Send a command to the lower-level computer's electric drive module to stop driving, and when the lower-level computer's electric drive module's driving status is read back and the water flow enable function for the next working step is detected to be turned on; If so, the water temperature value, water flow value and water supply start instruction for the next working condition step are sent to the water chiller. When the output water temperature and water flow of the water chiller are matched with the water temperature and water flow values ​​sent, the water supply enable switch is completed. If not, a water blowing command is sent to the water cooler. When the water cooler is in the water blowing state, the water blowing is completed according to the set water blowing time and no fault occurs within the waiting time, and the water enabling switch is completed.

12. The method according to claim 2, characterized in that Also includes: During the test, the lower-level computer electric drive module performs fault monitoring according to the protection value set in the current working condition step, and issues an alarm and shuts down the machine when a fault is detected.

13. The method according to any one of claims 1 to 12, characterized in that Also includes: According to the received editing instruction, an editing operation is performed on the driving condition step list; the editing operation includes at least one of adding a driving condition step, deleting a driving condition step, and updating a driving condition step.

14. A power module reactive aging test device, characterized in that: include: a parameter configuration module, configured to send corresponding configuration parameters to an execution terminal according to the current operating condition step parameters in the driving operating condition step list, and receive feedback information sent by the execution terminal after completing the relevant operating condition settings of the power module according to the configuration parameters; a test control module, configured to perform a corresponding aging test on the power module according to the operating condition type in the current operating condition step parameter after determining that each operating condition setting meets the requirements based on the feedback information; The parameter switching module is used to obtain the working condition step parameters of the next step in the driving working condition step list after completing the test on the power module, and switch the configuration parameters of the execution terminal according to the working condition step parameters of the next step when there is a parameter change; after completing the configuration parameter switching, the working condition step parameters of the next step are used as the new current working condition step parameters, so that the test control module again performs corresponding aging tests on the power module according to the working condition type in the current working condition step parameters until the corresponding tests of all working condition step parameters in the driving working condition step list are completed.

15. A power module reactive aging test system, characterized in that: The method comprises a host computer, an industrial computer and an execution terminal, wherein the execution terminal communicates with the host computer through the industrial computer, and the host computer performs reactive aging test of the power module according to the method according to any one of claims 1 to 13.

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