Aging test platform for driving motor

Abstract

The invention discloses an aging test platform for a driving motor, and relates to the technical field of motors, the disclosed aging test platform comprises a high-voltage direct-current power supply and a high-voltage control unit, one end of the high-voltage control unit is connected with the high-voltage direct-current power supply, and the other end of the high-voltage control unit is connected with a target driving motor. In the state that the neutral point of the target driving motor is kept connected, the high-voltage control unit generates the voltage waveform according to the historical data and continuously applies the voltage to the target driving motor, and the insulation abnormal state of the target driving motor is detected, so that the application scene of an actual product is accurately simulated; the large difference between a test scene and an actual product is avoided, the accuracy of insulation detection is effectively improved, and the measurement precision of the product application risk can be really evaluated.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to an aging test platform for driving a motor. Background Art

[0002] Electric motors are currently the most widely used power supply equipment and drive devices, playing a vital role in new energy vehicles, wind power generation, rail transit and other industries.

[0003] In order to ensure the safe operation of the motor, it is necessary to conduct an electrothermal aging test on the motor insulation structure. At present, for the insulation structure of the variable frequency motor, there are large differences between the detection devices and evaluation methods in the industry that simulate the electrothermal aging stress of the product and the actual product. On the one hand, the state of the test sample is different from the actual product state. Most of the detection equipment requires the neutral point of the stator winding to be disconnected, which leads to large differences between the voltage distribution law and the magnitude of the electrical stress inside the stator insulation during the detection process and the actual product. In particular, the star point voltage is too high, resulting in product over-verification or verification failure problems; on the other hand, the pressurization method is different from the actual product. For the three-phase lines of the stator in the actual application scenario, voltage is applied simultaneously, and the phase-to-phase insulation, turn-to-turn insulation and insulation to the ground can be tested simultaneously, but the current detection equipment can only pressurize one phase one phase, one phase two phases, or although the three phases are simultaneously voltage applied, the control method of the three-phase switch tube is different from the actual product, and the actual product application cannot be simulated.

[0004] Therefore, there are significant differences between the test scenarios of existing evaluation methods and the application scenarios of actual products, which will lead to inaccurate insulation detection and make it difficult to truly assess product application risks. Summary of the invention

[0005] The main purpose of this application is to provide an aging test platform for driving motors, aiming to solve the technical problem that there is a large difference between the test scenarios of the existing technology and the application scenarios of actual products, which will lead to inaccurate insulation detection and difficulty in truly assessing the product application risks.

[0006] To achieve the above-mentioned purpose, the present application provides an aging test platform for a drive motor, comprising: a high-voltage DC power supply;

[0007] A high-voltage control unit, one end of which is connected to the high-voltage DC power supply, and the other end of which is connected to the target drive motor, wherein:

[0008] In a state where the neutral point of the target drive motor remains connected, the high-voltage control unit generates a voltage waveform according to historical data and continuously applies voltage to the target drive motor to detect an abnormal insulation state of the target drive motor.

[0009] In one embodiment, the voltage includes voltage amplitude, pulse width and frequency information.

[0010] In one embodiment, the voltage waveform is a SVPWM wave.

[0011] In one embodiment, the insulation abnormality state of the target drive motor includes phase-to-phase insulation abnormality, turn-to-turn insulation abnormality and ground insulation abnormality.

[0012] In one embodiment, the high voltage control unit stores historical data and matches the corresponding historical data based on the input information, thereby outputting a corresponding voltage waveform.

[0013] In one embodiment, it further includes:

[0014] A monitoring system, wherein the monitoring system monitors parameter changes of the target drive motor during the process of the high-voltage control unit applying voltage, and feeds back the parameter changes to the high-voltage control unit; the high-voltage control unit stops applying voltage when the parameter changes exceed a preset state.

[0015] In one embodiment, it further includes:

[0016] A cooling water tank is connected to the target drive motor and provides cooling water for the target drive motor. When the amount of cooling water in the target drive motor reaches a preset state, the high-voltage control unit generates a voltage waveform according to target information and continuously applies voltage to the target drive motor to detect abnormal insulation state and thermal state of the target drive motor.

[0017] In one embodiment, it further includes:

[0018] An oil tank is connected to the target drive motor and provides cooling oil for the target drive motor. When the amount of cooling oil in the target drive motor reaches a preset state, the high-voltage control unit generates a voltage waveform according to target information and continuously applies voltage to the target drive motor to detect the abnormal insulation state and temperature state of the target drive motor.

[0019] One or more technical solutions proposed in this application have at least the following technical effects:

[0020] The present application discloses an aging test platform for a drive motor, comprising: a high-voltage DC power supply and a high-voltage control unit, wherein one end of the high-voltage control unit is connected to the high-voltage DC power supply, and the other end is connected to the target drive motor. The present application detects the abnormal insulation state of the target drive motor by generating a voltage waveform according to historical data and continuously applying voltage to the target drive motor while the neutral point of the target drive motor remains connected, thereby achieving accurate simulation of the application scenario of the actual product, avoiding large differences between the test scenario and the actual product, effectively improving the accuracy of insulation detection, and thus being able to truly evaluate the measurement accuracy of the product application risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a structural schematic diagram of the first embodiment of the aging test platform of the present application;

[0024] Figure 2 This is a test schematic diagram of the first embodiment of the aging test platform of the present application;

[0025] Figure 3 This is a structural schematic diagram of the second embodiment of the aging test platform of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of the cooling water tank in the third embodiment of the aging test platform of this application;

[0027] Figure 5 This is a schematic diagram of the structure of the oil tank in the third embodiment of the aging test platform of the present application.

[0028] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0030] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The main solution of the embodiment of the present application is: the main system determines the test voltage according to the SVPWM waveform signal; the main system performs an aging test by simultaneously applying the test voltage to the three-phase lines of each motor insulation structure while keeping the neutral point of each motor insulation structure connected.

[0032] With the advancement of frequency conversion technology and the increase in market demand, motors are rapidly developing towards high voltage. As a prerequisite for ensuring the safe operation of motors, stator (i.e., motor insulation structure) insulation is facing severe challenges. On the one hand, the motor stator insulation is affected by the high-voltage frequency conversion pulse, the winding structure and the damage during the manufacturing process. The electric field distribution inside the winding is uneven. Under the action of the electric field, when the electric field strength in a local area of ​​the insulation structure reaches the breakdown field strength, local discharge will occur in the area, resulting in premature aging and failure of the stator-to-ground insulation, turn-to-turn insulation and end-to-phase insulation; on the other hand, during long-term operation, the motor stator insulation is subjected to various aging stresses such as heat, electricity, machinery, and environment (oil, humidity, chemical erosion, etc.), which makes the mechanical properties of the insulation system deteriorate, the electrical strength decreases, the insulation performance decreases, and in severe cases, insulation breakdown failure occurs.

[0033] At present, there are few studies on the methods of simultaneously detecting the multi-stress aging of the insulation structure of variable frequency motors at home and abroad. Either the phase-to-phase insulation, turn-to-turn insulation or ground insulation of variable frequency motors are detected separately, or one or several stresses of the insulation structure of variable frequency motors are simulated separately, which are quite different from the actual application scenarios of the products, making it difficult to truly assess the application risks of the products. On the one hand, the state of the test sample is different from the actual product state. Most of the testing equipment requires the neutral point of the stator winding to be disconnected, resulting in a large difference between the voltage distribution law and the magnitude of the electrical stress inside the stator insulation during the test and the actual product, especially the star point voltage is too high, resulting in the problem of product over-verification or verification failure; on the other hand, the pressurization method is different from the actual product. For the three-phase lines of the stator in the actual application scenario, the phase-to-phase insulation, turn-to-turn insulation and ground insulation can be tested simultaneously, but the current testing equipment can only pressurize one phase one phase, one phase two phases, or although the three phases are simultaneously applied with voltage, the control method of the three-phase switch tube is different from the actual product, and the actual product application cannot be simulated. Therefore, there is a large difference between the test scenario of the existing evaluation method and the application scenario of the actual product, which will lead to inaccurate insulation detection and it is difficult to truly assess the application risks of the product.

[0034] The present application provides a solution, and proposes an aging test platform for a drive motor, including: a high-voltage DC power supply and a high-voltage control unit, one end of the high-voltage control unit is connected to the high-voltage DC power supply, and the other end is connected to the target drive motor. When the neutral point of the target drive motor remains connected, the high-voltage control unit generates a voltage waveform according to historical data and continuously applies voltage to the target drive motor to detect the abnormal insulation state of the target drive motor, thereby achieving accurate simulation of the application scenario of the actual product, avoiding large differences between the test scenario and the actual product, effectively improving the accuracy of insulation detection, and thus being able to truly evaluate the measurement accuracy of product application risks.

[0035] Based on this, the embodiment of the present application provides an aging test platform for driving a motor, referring to Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the aging test platform of the present application.

[0036] In this embodiment, the aging test platform for driving the motor includes:

[0037] High voltage DC power supply 100.

[0038] A high voltage control unit 200 , one end of which is connected to the high voltage DC power supply 100 , and the other end of which is connected to the target drive motor 300 .

[0039] Wherein, when the neutral point of the target drive motor 300 remains connected, the high voltage control unit 200 generates a voltage waveform according to historical data and continuously applies voltage to the target drive motor 300 to detect the insulation abnormality of the target drive motor 300 .

[0040] Reference Figure 2 , Figure 2 This is a test schematic diagram of the first embodiment of the aging test platform of the present application. Figure 2 In the embodiment, the target drive motor 300 includes a plurality of motor insulation structures. Each motor insulation structure is as follows: Figure 2The motor insulation structure 1, motor insulation structure 2, ..., motor insulation structure i in the motor insulation structure, the structure of each motor insulation structure is consistent, and the specific number can be determined according to the actual test requirements. The number of high-voltage control units 200 is consistent with the number of each motor insulation structure, including high-voltage control unit 1, high-voltage control unit 2, ..., high-voltage control unit i, one end of each high-voltage control unit is connected to the high-voltage DC power supply 100, and the other end is connected to the three-phase line of the corresponding motor insulation structure. For example, the high-voltage control unit 1 is respectively connected to the U-phase winding Lu1, V-phase winding Lv1 and W-phase winding Lw1 of the motor insulation structure 1, the high-voltage control unit 2 is respectively connected to the U-phase winding Lu2, V-phase winding Lv2 and W-phase winding Lw2 of the motor insulation structure 2, and the high-voltage control unit i is respectively connected to the U-phase winding Lui, V-phase winding Lvi and W-phase winding Lwi of the motor insulation structure i.

[0041] It should be noted that the above-mentioned motor insulation structure includes but is not limited to the insulation structure of the motor stator, the insulation structure of the motor rotor and electrical insulation structures with similar premises.

[0042] In a specific implementation, a corresponding high-voltage power switch may be provided between the high-voltage control unit 200 and the high-voltage DC power supply 100. The high-voltage control unit 200 may control the opening and closing of the corresponding high-voltage power switch according to the electrical condition data in the historical data of the actual product to simulate the voltage waveform for driving the target drive motor. Then, while the neutral point of the target drive motor 300 remains connected, that is, the neutral point of each motor insulation structure is kept connected, the high-voltage control unit 200 simultaneously applies the voltage corresponding to the voltage waveform on the three-phase line of the corresponding motor insulation structure for aging test, so as to detect the abnormal insulation state of the target drive motor 300 while being consistent with the application scenario of the actual product.

[0043] The applied voltage includes voltage amplitude, pulse width and frequency information.

[0044] It should be understood that the above-mentioned actual product may be an insulation structure in a variable frequency motor that is currently in use.

[0045] It should be noted that the above-mentioned electrical operating condition data may be electrical parameter distribution data of an actual product during application, and the electrical parameter distribution data includes bus voltage distribution data and three-phase current distribution data.

[0046] In this embodiment, the voltage waveform is a space vector pulse width modulation (SVPWM) wave.

[0047] The insulation abnormality state of the target drive motor includes phase-to-phase insulation abnormality, turn-to-turn insulation abnormality and ground insulation abnormality.

[0048] It is understandable that if a bipolar pulse square wave signal is used during the test, the voltage at the stator winding outlet will be higher than the input terminal, and the voltage rise / fall time will be longer (such as 100 to 200ns). Based on this, this embodiment adopts the voltage waveform of the SVPWM wave, and the high-voltage control unit 200 can control the on and off of the high-voltage power switch according to the bus voltage distribution data and the three-phase current distribution data in the electrical condition data, so as to convert the DC signal output by the high-voltage DC power supply 100 into an SVPWM wave that simulates the actual product, so that the input terminal voltage of the motor insulation structure can be higher than the terminal voltage, and the voltage rise / fall time can be shortened (such as 50 to 60ns), and the pulse has a higher repetition rate, so that a more accurate test voltage can be obtained.

[0049] It should be noted that the SVPWM wave may be a pulse width modulation waveform generated by a specific switching mode, and is used to make the output current waveform of the motor as close as possible to an ideal sinusoidal pulse width modulation (PWM) signal.

[0050] It should be understood that the use of SVPWM waveform signals and maintaining the neutral point of the motor insulation structure during the test can also ensure that the voltage distribution pattern and electrical stress size inside the motor insulation structure during the test are less different from the actual product, thereby avoiding the problem of excessive star point voltage causing product over-verification or verification failure, and effectively improving the test accuracy.

[0051] In addition, voltage is applied to the three-phase lines (U phase, V phase and W phase) of the motor stator winding at the same time in the actual application scenario. In order to be consistent with the actual application scenario, the neutral point of the motor stator winding can be kept connected during the aging test. Each high-voltage electronic control can simultaneously apply test voltage to the three-phase lines of the motor insulation structure in the application scenario, so that phase-to-phase insulation abnormalities, turn-to-turn insulation abnormalities and ground insulation abnormalities can be detected at the same time, avoiding the situation where one phase is pressurized to one phase, one phase is pressurized to two phases, or three phases are applied with voltage at the same time, but the control method of the three-phase switch tube is different from the actual product (that is, the control method of disconnecting the neutral point of the motor stator winding). This achieves accurate simulation of the application scenario of the actual product and further improves the test accuracy.

[0052] In this embodiment, the high voltage control unit 200 stores historical data, and matches the corresponding historical data based on the input information, thereby outputting a corresponding voltage waveform.

[0053] The historical data in this application may be derived from measured data of actual products (such as drive motors or electric drive assemblies) under different operating conditions, or may be derived from measured data of actual products on a test bench.

[0054] The present embodiment provides an aging test platform for a drive motor, comprising: a high-voltage DC power supply and a high-voltage control unit, one end of the high-voltage control unit is connected to the high-voltage DC power supply, and the other end is connected to the target drive motor. The present embodiment detects the abnormal insulation state of the target drive motor by generating a voltage waveform according to historical data and continuously applying voltage to the target drive motor while the neutral point of the target drive motor remains connected, thereby achieving accurate simulation of the application scenario of the actual product, avoiding a large difference between the test scenario and the actual product, effectively improving the accuracy of insulation detection, and thus being able to truly evaluate the measurement accuracy of product application risks.

[0055] Based on the first embodiment of the present application, the second embodiment of the present application is proposed. In the second embodiment of the present application, the same or similar contents as those of the first embodiment can be referred to the above introduction, and will not be repeated later. Figure 3 , Figure 3 This is a structural diagram of the second embodiment of the aging test platform of the present application.

[0056] In this embodiment, the aging test platform also includes: a monitoring system 400, which monitors the parameter changes of the target drive motor 300 during the process of the high-voltage control unit 200 applying voltage, and feeds back the parameter changes to the high-voltage control unit 200; the high-voltage control unit 200 stops applying voltage when the parameter changes exceed a preset state.

[0057] It should be noted that the above-mentioned preset state may be a state in which the insulation structure of the motor fails, which can be determined by comparing the parameter change with a preset safety threshold.

[0058] In a specific implementation, a signal acquisition module may be provided in the monitoring system 400, and the signal acquisition module may include devices such as a high-voltage differential probe, an oscilloscope, a temperature sensor, a Hall sensor, a resolver sensor, a CAN card, a low-voltage power supply, and an acquisition board, etc., to collect parameter changes of the motor insulation structure at the output end of each high-voltage electric control or the input end of each motor insulation structure, and feed back the parameter changes to the high-voltage control unit 200. When the high-voltage control unit 200 detects that the parameter change exceeds the safety threshold, it may determine that the parameter change exceeds the preset state, and further determine that the motor insulation structure fails. At this time, each high-voltage electric control may be controlled to stop running to stop the test, prevent excessive damage, and improve the safety performance of the platform.

[0059] It should be understood that the monitoring system 400 can also monitor and display the voltage at the input end of the motor insulation structure in real time, including but not limited to the waveform, amplitude, frequency and other information of the test voltage. In addition, the three-phase current and temperature of the motor stator insulation structure can also be monitored in real time.

[0060] This embodiment monitors parameter changes of the target drive motor through a monitoring system during the process of the high-voltage control unit applying voltage, and feeds back the parameter changes to the high-voltage control unit; the high-voltage control unit stops applying voltage when the parameter changes exceed a preset state, thereby improving the safety and reliability of the test and providing a data source for performance evaluation and life prediction of the motor insulation structure.

[0061] Based on the first embodiment of the present application, the third embodiment of the present application is proposed. In the third embodiment of the present application, the same or similar contents as those of the first and second embodiments can be referred to the above introduction, and will not be repeated in the following. Figure 4 , Figure 4 This is a schematic diagram of the structure of the cooling water tank in the third embodiment of the aging test platform of the present application.

[0062] like Figure 4 As shown, in this embodiment, the aging test platform also includes: a cooling water tank, which is connected to the target drive motor 200 and provides cooling water for the target drive motor 300. When the cooling water volume of the target drive motor 300 reaches a preset state, the high-voltage control unit 200 generates a voltage waveform according to the target information and continuously applies voltage to the target drive motor 300 to detect the insulation abnormality and thermal state of the target drive motor 300.

[0063] It should be noted that the above-mentioned motor insulation structures can be placed in an environmental chamber, and the temperature of the actual product in the application environment can be simulated according to the thermal condition data in the actual environmental data. The simulated temperature can then be used as the current test temperature, and the environmental chamber can be controlled to output the test temperature so that the temperature of the test environment in which each motor insulation structure is located is updated to the current test temperature.

[0064] The environmental chamber may be a high-temperature chamber with a relatively high temperature (such as a maximum temperature ≥ 180°C), or a temperature cycle chamber with a certain temperature range (such as -40 to 180°C).

[0065] In a specific implementation, the cooling water tank is connected to each motor insulation structure of the target drive motor 200 through corresponding pipes to form multiple cooling circuits, such as the cooling water tank is connected to the motor insulation structure 1 through water channel 1 to form cooling circuit 1, the cooling water tank is connected to the motor insulation structure 2 through water channel 2 to form cooling circuit 2; the cooling water tank is connected to the motor insulation structure i through water channel i to form cooling circuit i. The cooling water tank can provide cooling water for the target drive motor 300 through each cooling circuit, so as to use the cooling water to adjust the current test temperature in real time to maintain the test temperature stable and avoid the test results being affected by excessive temperature. In addition, the auxiliary system 200 can monitor the coolant temperature, flow rate, and pressure through each cooling circuit, and control the temperature rise and fall of the cooling circuit to improve the cooling efficiency. When the cooling water volume of the target drive motor 300 reaches a preset state (i.e., the state of reaching the preset water volume), the high-voltage control unit 200 can generate a voltage waveform according to the target information and continuously apply voltage to the target drive motor 300 to detect the insulation abnormality and heat state of the target drive motor 300.

[0066] Reference Figure 5 , Figure 5 This is a schematic diagram of the structure of the oil tank in the third embodiment of the aging test platform of the present application. Figure 5 In the aging test platform, the oil tank is connected to the target drive motor 300 and provides cooling oil for the target drive motor 300. When the amount of cooling oil in the target drive motor 300 reaches a preset state, the high-voltage control unit 200 generates a voltage waveform according to the target information and continuously applies voltage to the target drive motor 300 to detect the insulation abnormality and temperature state of the target drive motor 300.

[0067] In a specific implementation, the oil tank is connected to each motor insulation structure of the target drive motor 200 through corresponding pipelines to form multiple circulating oil circuits, such as the oil tank is connected to the motor insulation structure 1 through oil channel 1 to form circulating oil circuit 1, the oil tank is connected to the motor insulation structure 2 through oil channel 2 to form circulating oil circuit 2, and the oil tank is connected to the motor insulation structure i through oil channel i to form circulating oil circuit i. The oil tank can provide cooling oil to the target drive motor 300 through each circulating loop, so as to utilize the cooling oil to simulate the current lubrication environment corresponding to the actual product in the application environment, so that the simulated current test environment is composed of the current test temperature and the current lubrication environment, thereby enabling the simulated application environment to more accurately reflect the real environment of the actual product and improve the test accuracy.

[0068] Among them, the circulating oil circuit between the above-mentioned oil tank and each motor insulation structure can be equipped with oil tanks, oil pumps, filters, oil temperature sensors, oil pressure sensors, flow sensors, oil pipes / injection rings and other oil guide paths, and oil temperature heating and cooling devices can also be set up to enable the circulating oil circuit to have the functions of lubricating oil temperature rise and fall, oil temperature monitoring, oil quantity monitoring and oil pressure monitoring, so as to improve the adjustment accuracy of the application environment.

[0069] In this embodiment, cooling water is provided to the target drive motor through a cooling water tank. When the amount of cooling water of the target drive motor reaches a preset state, the high-voltage control unit generates a voltage waveform according to the target information and continuously applies voltage to the target drive motor to detect the abnormal insulation state and thermal state of the target drive motor. Cooling oil is provided to the target drive motor through an oil tank. When the amount of cooling oil of the target drive motor reaches a preset state, the high-voltage control unit generates a voltage waveform according to the target information and continuously applies voltage to the target drive motor to detect the abnormal insulation state and temperature state of the target drive motor, thereby simulating the application environment of the actual product, avoiding the situation where the application environment of the motor insulation structure is greatly different from the application environment of the actual product, affecting the test results, and effectively improving the measurement accuracy.

[0070] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An aging test platform for a drive motor, characterized in that: include: High voltage DC power supply; A high-voltage control unit, one end of which is connected to the high-voltage DC power supply, and the other end of which is connected to the target drive motor, wherein: In a state where the neutral point of the target drive motor remains connected, the high-voltage control unit generates a voltage waveform according to historical data and continuously applies voltage to the target drive motor to detect an abnormal insulation state of the target drive motor.

2. The aging test platform according to claim 1, characterized in that: The voltage includes voltage amplitude, pulse width and frequency information.

3. The aging test platform according to claim 1, characterized in that: The voltage waveform is a SVPWM wave.

4. The aging test platform according to claim 1, characterized in that: The insulation abnormality state of the target drive motor includes phase-to-phase insulation abnormality, turn-to-turn insulation abnormality and ground insulation abnormality.

5. The aging test platform according to any one of claims 1 to 4, characterized in that: The high voltage control unit stores historical data and matches corresponding historical data based on input information, thereby outputting a corresponding voltage waveform.

6. The aging test platform according to claim 1, characterized in that: Also includes: A monitoring system, wherein the monitoring system monitors parameter changes of the target drive motor during the process of the high-voltage control unit applying voltage, and feeds back the parameter changes to the high-voltage control unit; The high voltage control unit stops applying voltage when the parameter changes beyond a preset state.

7. The aging test platform according to claim 1, characterized in that: Also includes: A cooling water tank is connected to the target drive motor and provides cooling water for the target drive motor. When the amount of cooling water in the target drive motor reaches a preset state, the high-voltage control unit generates a voltage waveform according to target information and continuously applies voltage to the target drive motor to detect abnormal insulation state and thermal state of the target drive motor.

8. The aging test platform according to claim 1, characterized in that: Also includes: An oil tank is connected to the target drive motor and provides cooling oil for the target drive motor. When the amount of cooling oil in the target drive motor reaches a preset state, the high-voltage control unit generates a voltage waveform according to target information and continuously applies voltage to the target drive motor to detect the abnormal insulation state and temperature state of the target drive motor.

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