High-voltage high-power multiphase motor fault verification system and method

Abstract

The invention discloses a high-voltage high-power multiphase motor fault verification system and method, and the system comprises a fault injection module, a conditioning module, a programmable power supply, and a power control module. The fault injection module comprises a first circuit breaker QF1, a first relay K1, a second relay K2, a first input interface and a first output interface; the conditioning module comprises an I-V conditioning plate; one end of the first circuit breaker QF1 is connected with the first input interface, the other end of the first circuit breaker QF1 is connected with one end of the first relay K1, and the other end of the first relay K1 is connected with the I-V conditioning board; the technical effects of accurately controlling fault injection of the multi-phase motor and verifying the fault injection are achieved, the fault of the motor can be alarmed in the verification process, meanwhile, a test curve can be drawn automatically, and therefore the test efficiency is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of motor fault testing, and in particular to a high-voltage, high-power, multi-phase motor fault verification system and method. Background Art

[0002] Multiphase motors generally refer to motors with more than three phases that can convert mechanical energy into electrical energy and electrical energy into mechanical energy. The working state of multiphase motors is relatively complex, and there are many variables that need to be monitored during operation. Therefore, before high-voltage and high-power multiphase motors are put into use, the faults of high-voltage and high-power multiphase motors must be verified to ensure the quality of high-voltage and high-power multiphase motors.

[0003] At present, most of the circuit breaker fault injection methods that are manually controlled can only realize single-phase motor circuit breaker fault injection, and cannot accurately control the multi-phase motor fault injection; and in the verification process of multi-phase motor faults, when a single-phase circuit breaker fault occurs, the fault parameters such as the current overcurrent of the remaining phases cannot be timely alarmed. At the same time, real-time data such as current waveforms can only be collected through a separate instrument. When analyzing the data, it is necessary to manually export the stored data of multiple instruments, and manually compare the data and draw the test curve graph. The operation is relatively complicated and the efficiency is low. Summary of the invention

[0004] The embodiments of the present application provide a high-voltage, high-power multi-phase motor fault verification system and method, which solves the problem that in the prior art, only single-phase motor circuit breaking fault injection can be implemented, and multi-phase motor fault injection cannot be accurately controlled. The system and method achieve the technical effect of accurately controlling the fault injection and verification of the multi-phase motor, and can alarm the motor fault during the verification process, and can also automatically draw the test curve, thereby greatly improving the test efficiency.

[0005] In the first aspect, an embodiment of the present invention provides a high-voltage and high-power multi-phase motor fault verification system, including a fault injection module, a conditioning module, a programmable power supply and a power control module; the fault injection module includes a first circuit breaker QF1, a first relay K1, a second relay K2, a first input interface and a first output interface; the conditioning module includes an IV conditioning board; one end of the first circuit breaker QF1 is connected to the first input interface, the other end of the first circuit breaker QF1 is connected to one end of the first relay K1, and the other end of the first relay K1 is connected to the IV conditioning board; one end of the second relay K2 is connected to the first circuit breaker QF1, and the other end of the second relay K2 is connected to the IV conditioning board; the IV conditioning board is connected to the first output interface; the first input interface is connected to the first output interface through a neutral line; one end of the programmable power supply is connected to the first input interface, and the other end of the programmable power supply is connected to the power control module; the first output interface is connected to the test motor; the power control module is respectively connected to the fault injection module and the conditioning module.

[0006] In combination with the first aspect, in a possible implementation, it also includes an industrial computer, an oscilloscope, a power analyzer and a power distribution module; one end of the power distribution module is connected to the power control module, and the other end of the power distribution module is respectively connected to the industrial computer, the oscilloscope, the power analyzer, the fault injection module and the conditioning module.

[0007] In combination with the first aspect, in a possible implementation manner, a driver is further included; the driver is connected between the programmable power supply and the first input interface.

[0008] In combination with the first aspect, in a possible implementation, the fault injection module also includes a conditioning interface, a buzzer, a status light and a test preparation switch; one end of the conditioning interface is respectively connected to the first relay K1, the second relay K2 and the IV conditioning board, and the other end of the conditioning interface is connected to the buzzer; the status light is respectively connected to the first relay K1 and the second relay K2; the test preparation switch is respectively connected to the first relay K1 and the second relay K2.

[0009] In combination with the first aspect, in a possible implementation, the IV conditioning board includes a chip, a resistor R1, a capacitor C1 and a capacitor C2; one end of the resistor R1 is connected to an input sampling current; a constant voltage is input to the other end of the resistor R1; a sampling current is input to the IN+ end of the chip, and a constant voltage is input to the IN- end of the chip; a constant voltage is input to the Rrf- end of the chip and the Rrf+ end of the chip; one end of the capacitor C1 is connected to the Vs+ end of the chip, and a constant voltage is input to the other end of the capacitor C1; one end of the capacitor C2 is connected to the Vs- end of the chip, and the other end of the capacitor C2 outputs a constant voltage; and the OUT end of the chip outputs the sampling voltage.

[0010] In combination with the first aspect, in a possible implementation, the power control module includes a fourth input interface, a fifth input interface, a first air breaker KM1, a second air breaker KM2, a first contactor QF1, a second contactor QF2, a fourth output interface and a fifth output interface; one end of the first air breaker KM1 is connected to the fourth output interface, the other end of the first air breaker KM1 is connected to one end of the first contactor QF1, and the other end of the first contactor QF1 is connected to the fourth input interface; one end of the second air breaker KM2 is connected to the fifth output interface, the other end of the second air breaker KM2 is connected to one end of the second contactor QF2, and the other end of the second contactor QF2 is connected to the fifth input interface.

[0011] In combination with the first aspect, in a possible implementation, the fault injection module includes a second circuit breaker QF2, a third circuit breaker QF3, a third relay K3, a fourth relay K4, a fifth relay K5, a sixth relay K6, a seventh relay K7, an eighth relay K8, a ninth relay K9, a second input interface, a third input interface, a second output interface and a third output interface; one end of the third relay K3 is connected to the first circuit breaker QF1, and the other end of the third relay K3 is connected to the IV conditioning board; one end of the fourth relay K4, the fifth relay K5 and the sixth relay K6 are all connected to one end of the second circuit breaker QF2, and the fourth relay K4, the fifth relay K5 and the other end of the sixth relay K6 are connected to the IV conditioning board; the other end of the second circuit breaker QF2 is connected to the second input interface; the second output interface is connected to the IV conditioning board; the second input interface is connected to the second output interface; one end of the seventh relay K7, the eighth relay K8 and the ninth relay K9 are connected to one end of the third circuit breaker QF3, and the other ends of the seventh relay K7, the eighth relay K8 and the ninth relay K9 are connected to the IV conditioning board; the other end of the third circuit breaker QF3 is connected to the third input interface; the third output interface is connected to the IV conditioning board; the third input interface is connected to the third output interface.

[0012] In a second aspect, an embodiment of the present invention provides a high-voltage, high-power, multi-phase motor fault verification method, using a high-voltage, high-power, multi-phase motor fault verification system as described in the first aspect or in combination with any possible implementation of the first aspect, comprising the following steps:

[0013] S1: Edit the automatic test script according to the test requirements, set the on-off sequence, interval breaking time, etc. of the 9-way contactor, and set the relevant parameters of the oscilloscope, power analyzer and programmable power supply;

[0014] S2: The system controls the opening or closing of the multi-phase test motor in the corresponding order according to the set parameters, and collects the current signal;

[0015] S3: In the data analysis and display interface, the recorded current data and the stored data of the external instrument are called, and data analysis and data comparison are performed, and the test data chart is output.

[0016] In combination with the first aspect, in a possible implementation manner, step S2 includes:

[0017] S21: The driver outputs to the 9-phase power line of the test motor. After the test motor passes through the fault injection module, the 9 single-phase contactors are controlled through the DO channel of the PCI board, so as to perform separate on-off control on each phase of the test motor.

[0018] S22: real-time acquisition of current signals through 9 current transformers, and connecting to the test motor through the output interface;

[0019] S23: The collected current signal is converted into a voltage signal through an IV conditioning board and then collected through the AD channel of the board.

[0020] One or more technical solutions provided by this application have at least the following technical effects:

[0021] The embodiment of the present invention adopts a high-voltage and high-power multi-phase motor fault verification system, including a fault injection module, a conditioning module, a programmable power supply and a power control module; the fault injection module includes a first circuit breaker QF1, a first relay K1, a second relay K2, a first input interface and a first output interface; the conditioning module includes an IV conditioning board; one end of the first circuit breaker QF1 is connected to the first input interface, the other end of the first circuit breaker QF1 is connected to one end of the first relay K1, and the other end of the first relay K1 is connected to the IV conditioning board; the first relay K1 can control the on and off of this phase of the connected motor, and the first circuit breaker QF1 is connected to the first input interface, and the other end of the first circuit breaker QF1 is connected to the first relay K1. 1 can provide overcurrent protection for the motor; one end of the second relay K2 is connected to the first circuit breaker QF1, and the other end of the second relay K2 is connected to the IV conditioning board; the IV conditioning board is connected to the first output interface; the second circuit breaker K2 can control the on and off of this phase of the connected motor, and the IV conditioning board can collect the current signal and convert it into a voltage signal; the first input interface is connected to the first output interface through the neutral line; one end of the programmable power supply is connected to the first input interface, and the other end of the programmable power supply is connected to the power control module; the first output interface is connected to the test motor; the power control module is respectively connected to the fault injection module and the conditioning module. The present application solves the problem that only single-phase motor circuit breaker fault injection can be realized in the prior art, and multi-phase motor fault injection cannot be accurately controlled, and realizes the technical effect of accurately controlling the fault injection of multi-phase motors and verifying them, and can alarm the fault of the motor during the verification process, and can also automatically draw the test curve, thereby greatly improving the test efficiency.

[0022] The embodiment of the present invention adopts a high-voltage and high-power multi-phase motor fault verification method. It adopts the design of automatic fault injection and can realize fault injection test of a maximum of 9-phase motors. The time, sequence and channel of fault injection can be designed and executed by automated scripts. The current parameters of the specified channel can be automatically collected and saved through script settings. It supports calling external instruments through scripts. The test data of external power analyzers, oscilloscopes, power supplies, etc. can be called and saved in real time through communication. After the test is completed, multi-dimensional test data analysis and comparison can be customized, and test curves can be automatically drawn, which greatly improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of a high-voltage, high-power, multi-phase motor fault verification system provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of a power control module provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the principle of the fault injection module provided in the embodiment of the present application;

[0027] Figure 4 A logic control schematic diagram of a fault injection module provided in an embodiment of the present application;

[0028] Figure 5 A working principle diagram of the status light provided in the embodiment of the present application;

[0029] Figure 6 A schematic diagram of a conditioning module provided in an embodiment of the present application;

[0030] Figure 7 A circuit diagram of an IV demodulation board provided in an embodiment of the present application;

[0031] Figure 8 A software operation flow chart of a high-voltage, high-power, multi-phase motor fault verification system provided in an embodiment of the present application;

[0032] Fig. 9 A flow chart of a high-voltage, high-power, multi-phase motor fault verification method provided in an embodiment of the present application;

[0033] Fig.10A flowchart of a high-voltage, high-power, multi-phase motor fault verification method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present application. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] The embodiment of the present invention provides a high-voltage and high-power multi-phase motor fault verification system, such as Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, it includes a fault injection module, a conditioning module, a programmable power supply and a power control module; the fault injection module includes a first circuit breaker QF1, a first relay K1, a second relay K2, a first input interface and a first output interface; the conditioning module includes an IV conditioning board; one end of the first circuit breaker QF1 is connected to the first input interface, the other end of the first circuit breaker QF1 is connected to one end of the first relay K1, and the other end of the first relay K1 is connected to the IV conditioning board; one end of the second relay K2 is connected to the first circuit breaker QF1, and the other end of the second relay K2 is connected to the IV conditioning board; the IV conditioning board is connected to the first output interface; the first input interface is connected to the first output interface through a neutral line; one end of the programmable power supply is connected to the first input interface, and the other end of the programmable power supply is connected to the power control module; the first output interface is connected to the test motor; the power control module is respectively connected to the fault injection module and the conditioning module.

[0037] Exemplarily, the fault injection module can control the circuit breaker of 9-phase power supply, and has functions such as overcurrent, short-circuit protection, and current acquisition. It can realize the control of fault injection and programmable power supply through manual and automatic control methods, and can realize programming of parameters such as fault injection time, delay and sequence.

[0038] Exemplarily, the control is implemented by using DO resources to control the first relay K1 and the second relay K2 and then control the first circuit breaker QF1. The DO resources are implemented by the DO channel of the multi-function board in the industrial computer. The motor power supply enters the fault injection module through the first input interface, and after passing through the first circuit breaker QF1, it is controlled by the first relay K1 and the second relay K2. The first relay K1 and the second relay K2 are both designed with current transformers at the rear stage, which can be used to detect the current state of the path and are connected to the test motor through the first output interface.

[0039] For example, the state acquisition is realized by selecting a high-precision current transformer, outputting analog signals, and collecting through the AD channel of the multi-function board. The single-channel sampling rate is not less than 50kS / s, which can meet the 0.05ms sampling interval. The sampling data will be displayed in the software interface through waveforms and other methods.

[0040] For example, Figure 4 As shown, the logic control of the fault injection module adopts the control sequence of DO resources, relay boards and contactors, and adopts program control to achieve automatic and manual control.

[0041] For example, Figure 8 As shown, the software of this system adopts a three-level process structure. After the equipment is powered on, the hardware is initialized first, the hardware readiness status signal is checked, and it is confirmed whether to start the test. Then, the control mode needs to be selected to enter different software operation interfaces.

[0042] In the present application embodiment, Figure 1 As shown, it also includes an industrial computer, an oscilloscope, a power analyzer and a power distribution module; one end of the power distribution module is connected to the power control module, and the other end of the power distribution module is respectively connected to the industrial computer, the oscilloscope, the power analyzer, the fault injection module and the conditioning module.

[0043] Exemplarily, the system is controlled by an industrial computer, which is equipped with a multi-function acquisition board including AD and IO resources. Through the USB interface, the programmable power supply can be controlled; through the reserved serial port, external devices can remotely control the device according to the protocol.

[0044] Exemplarily, the system is also configured with a swing arm display with a keyboard and mouse tray for human-computer interaction.

[0045] Exemplarily, the interactive interfaces between the system and the motor and controller under test all use J599Ⅰ series connectors and corresponding matching wires, and the cables are configured according to the test requirements.

[0046] In the present application embodiment, Figure 1 As shown, a driver is also included; the driver is connected between the programmable power supply and the first input interface.

[0047] In the present application embodiment, Figure 3 As shown, the fault injection module also includes a conditioning interface, a buzzer, a status light and a test preparation switch; one end of the conditioning interface is respectively connected to the first relay K1, the second relay K2 and the IV conditioning board, and the other end of the conditioning interface is connected to the buzzer; the status light is respectively connected to the first relay K1 and the second relay K2; the test preparation switch is respectively connected to the first relay K1 and the second relay K2.

[0048] For example, the status indicator light can display the connection status of each phase; the measuring point can be used to connect an external measuring instrument; the buzzer has an alarm function; and the test state preparation switch has a state locking function.

[0049] Exemplarily, the conditioning interface is connected to a buzzer via a logic circuit or a controller to indicate a fault state.

[0050] For example, the buzzer is used to alarm the status of the programmable power supply output voltage, current and contactor rear output current, and the alarm threshold is set by software. The buzzer is powered by 24V DC, directly powered by the switching power supply, and the negative terminal is grounded through a relay.

[0051] For example, the test status preparation switch is used by operators to confirm the connection status of test components, cables, protection devices and other hardware. The test status preparation switch collects data through the DI channel of the multi-function board and unlocks the control software, which can effectively prevent misoperation and provide relevant status prompts on the software interface to improve safety performance.

[0052] In an embodiment of the present application, the IV conditioning board includes a chip, a resistor R1, a capacitor C1 and a capacitor C2; one end of the resistor R1 is connected to an input sampling current; a constant voltage is input to the other end of the resistor R1; a sampling current is input to the IN+ end of the chip, and a constant voltage is input to the IN- end of the chip; a constant voltage is input to the Rrf- end of the chip and the Rrf+ end of the chip; one end of the capacitor C1 is connected to the Vs+ end of the chip, and a constant voltage is input to the other end of the capacitor C1; one end of the capacitor C2 is connected to the Vs- end of the chip, and the other end of the capacitor C2 outputs a constant voltage; and the OUT end of the chip outputs the sampling voltage.

[0053] Exemplarily, the chip uses AD8479, and current acquisition is achieved using a high-precision current sensor. The sensor is powered by ±15V and outputs an analog signal. After IV conversion by a conditioning box through a conditioning interface output value conditioning box, the signal is collected by the AD channel of the multi-function board.

[0054] For example, the output voltage range is 0 to 2.5V, and can be amplified according to the actual sampling situation to improve the effective accuracy of AD sampling. The conditioned voltage signal is output to the industrial computer multi-function card through the PCIe-6531 interface for acquisition. The single-channel sampling rate of the card is not less than 50kS / s, which can meet the 0.05ms sampling interval. The sampling data will be displayed in the software interface through waveforms and other methods.

[0055] Exemplarily, in order to prevent high-voltage signals from interfering with acquisition and control signals, the present application uses a separate conditioning box for installing related components, for conditioning the acquisition and control signals, and for signal switching on the multi-function board of the industrial computer.

[0056] In the present application embodiment, Figure 2 As shown, the power control module includes a fourth input interface, a fifth input interface, a first air breaker KM1, a second air breaker KM2, a first contactor QF1, a second contactor QF2, a fourth output interface and a fifth output interface; one end of the first air breaker KM1 is connected to the fourth output interface, the other end of the first air breaker KM1 is connected to one end of the first contactor QF1, and the other end of the first contactor QF1 is connected to the fourth input interface; one end of the second air breaker KM2 is connected to the fifth output interface, the other end of the second air breaker KM2 is connected to one end of the second contactor QF2, and the other end of the second contactor QF2 is connected to the fifth input interface.

[0057] Exemplarily, the first circuit breaker KM1 is connected to the second circuit breaker KM2. External AC220V and AC380V power supplies are connected to the power control module through the input interface, and then connected to the AC220V and AC380V contactors respectively. The two contactors can be manually controlled by the main power switch of the switch panel.

[0058] In the present application embodiment, Figure 3-5As shown, the fault injection module includes a second circuit breaker QF2, a third circuit breaker QF3, a third relay K3, a fourth relay K4, a fifth relay K5, a sixth relay K6, a seventh relay K7, an eighth relay K8, a ninth relay K9, a second input interface, a third input interface, a second output interface and a third output interface; one end of the third relay K3 is connected to the first circuit breaker QF1, and the other end of the third relay K3 is connected to the IV conditioning board; one end of the fourth relay K4, the fifth relay K5 and the sixth relay K6 are all connected to one end of the second circuit breaker QF2, and the fourth relay K4, the fifth relay K5 and the sixth relay K6 are connected to one end of the second circuit breaker QF2. The other ends of the sixth relay K5 and the sixth relay K6 are connected to the IV conditioning board; the other end of the second circuit breaker QF2 is connected to the second input interface; the second output interface is connected to the IV conditioning board; the second input interface is connected to the second output interface; one end of the seventh relay K7, the eighth relay K8 and the ninth relay K9 are connected to one end of the third circuit breaker QF3, and the other ends of the seventh relay K7, the eighth relay K8 and the ninth relay K9 are connected to the IV conditioning board; the other end of the third circuit breaker QF3 is connected to the third input interface; the third output interface is connected to the IV conditioning board; the third input interface is connected to the third output interface.

[0059] For example, Figure 5 As shown in the figure, according to the needs of users, the power supply of the 9 phases of the motor can be controlled on and off, and users can realize the on and off control of any one phase or multiple phases according to their needs. The on and off control of fault injection is program-controlled and realized through contactors. Nine groups of independent contactors are designed in the fault injection machine module. The program-controlled method uses the IO resources of the industrial computer to control the relay module, and finally controls the contactor coil. The indirect control method of the relay can not only solve the problem of insufficient IO resource driving capability, but also realize the status indication function through the double-pole structure of the relay. The fault injection machine module realizes short-circuit and overcurrent protection functions by installing a circuit breaker; the circuit breaker adopts three groups of 3-phase structures, and each channel is independently configured.

[0060] The embodiment of the present invention provides a high-voltage and high-power multi-phase motor fault verification method, such as Fig. 9 As shown, a high-voltage and high-power multi-phase motor fault verification system is used, including the following steps:

[0061] S1: Edit the automatic test script according to the test requirements, set the on-off sequence, interval breaking time, etc. of the 9-way contactor, and set the relevant parameters of the external oscilloscope, power analyzer, and programmable power supply;

[0062] S2: The system controls the opening or closing of the multi-phase test motor in the corresponding order according to the set parameters, and collects the current signal;

[0063] S3: In the data analysis and display interface, the recorded current data and the stored data of the external instrument are called, and data analysis and data comparison are performed, and the test data chart is output.

[0064] In the present application embodiment, Fig.10 As shown, step S2 includes:

[0065] S21: The driver outputs to the 9-phase power line of the test motor. After the test motor passes through the fault injection module, the 9 single-phase contactors are controlled through the DO channel of the PCI board, so as to perform separate on-off control on each phase of the test motor.

[0066] S22: real-time acquisition of current signals through 9 current transformers, and connecting to the test motor through the output interface;

[0067] S23: The collected current signal is converted into a voltage signal through an IV conditioning board and then collected through the AD channel of the board.

[0068] Exemplarily, the present application designs a detection interface that can quickly complete equipment calibration and possible subsequent fault location and maintenance. It has test accuracy that meets the requirements of use and high versatility. The equipment is based on technical accuracy indicators, is compatible with automatic and manual modes, and selects components from well-known domestic manufacturers, so that measurement stability and reliability of use are better guaranteed.

[0069] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0070] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A high-voltage, high-power, multi-phase motor fault verification system, characterized in that: It includes a fault injection module, a conditioning module, a programmable power supply and a power control module; The fault injection module includes a first circuit breaker QF1, a first relay K1, a second relay K2, a first input interface and a first output interface; The conditioning module includes an IV conditioning board; One end of the first circuit breaker QF1 is connected to the first input interface, the other end of the first circuit breaker QF1 is connected to one end of the first relay K1, and the other end of the first relay K1 is connected to the IV conditioning board; One end of the second relay K2 is connected to the first circuit breaker QF1, and the other end of the second relay K2 is connected to the IV conditioning board; The IV conditioning board is connected to the first output interface; The first input interface is connected to the first output interface via a neutral line; One end of the programmable power supply is connected to the first input interface, and the other end of the programmable power supply is connected to the power control module; The first output interface is connected to the test motor; The power control module is connected to the fault injection module and the conditioning module respectively.

2. The high-voltage, high-power, multi-phase motor fault verification system according to claim 1 is characterized in that: It also includes an industrial computer, an oscilloscope, a power analyzer, and a power distribution module; One end of the power distribution module is connected to the power control module, and the other end of the power distribution module is respectively connected to the industrial computer, the oscilloscope, the power analyzer, the fault injection module and the conditioning module.

3. The high-voltage, high-power, multi-phase motor fault verification system according to claim 1 is characterized in that: Also includes the drive; The driver is connected between the programmable power supply and the first input interface.

4. The high-voltage, high-power, multi-phase motor fault verification system according to claim 1 is characterized in that: The fault injection module also includes a conditioning interface, a buzzer, a status light and a test preparation switch; One end of the conditioning interface is connected to the first relay K1, the second relay K2 and the IV conditioning board respectively, and the other end of the conditioning interface is connected to the buzzer; The status lights are connected to the first relay K1 and the second relay K2 respectively; The test preparation switch is connected to the first relay K1 and the second relay K2 respectively.

5. The high-voltage, high-power, multi-phase motor fault verification system according to claim 1, characterized in that: The IV conditioning board includes a chip, a resistor R1, a capacitor C1 and a capacitor C2; One end of the resistor R1 is connected to the input sampling current; the other end of the resistor R1 is connected to the input constant voltage; A sampling current is input to the IN+ terminal of the chip, and a constant voltage is input to the IN- terminal of the chip; A constant voltage is input to both the Rrf- terminal of the chip and the Rrf+ terminal of the chip; One end of the capacitor C1 is connected to the Vs+ end of the chip, and a constant voltage is input to the other end of the capacitor C1; One end of the capacitor C2 is connected to the Vs- terminal of the chip, and the other end of the capacitor C2 outputs a constant voltage; The OUT terminal of the chip outputs a sampling voltage.

6. The high-voltage, high-power, multi-phase motor fault verification system according to claim 1, characterized in that: The power control module includes a fourth input interface, a fifth input interface, a first air switch KM1, a second air switch KM2, a first contactor QF1, a second contactor QF2, a fourth output interface and a fifth output interface; One end of the first circuit breaker KM1 is connected to the fourth output interface, the other end of the first circuit breaker KM1 is connected to one end of the first contactor QF1, and the other end of the first contactor QF1 is connected to the fourth input interface; One end of the second circuit breaker KM2 is connected to the fifth output interface, the other end of the second circuit breaker KM2 is connected to one end of the second contactor QF2, and the other end of the second contactor QF2 is connected to the fifth input interface.

7. The high-voltage, high-power, multi-phase motor fault verification system according to claim 1, characterized in that: The fault injection module includes a second circuit breaker QF2, a third circuit breaker QF3, a third relay K3, a fourth relay K4, a fifth relay K5, a sixth relay K6, a seventh relay K7, an eighth relay K8, a ninth relay K9, a second input interface, a third input interface, a second output interface and a third output interface; One end of the third relay K3 is connected to the first circuit breaker QF1, and the other end of the third relay K3 is connected to the IV conditioning board; One end of the fourth relay K4, the fifth relay K5 and the sixth relay K6 are all connected to one end of the second circuit breaker QF2, and the other ends of the fourth relay K4, the fifth relay K5 and the sixth relay K6 are all connected to the IV conditioning board; The other end of the second circuit breaker QF2 is connected to the second input interface; The second output interface is connected to the IV conditioning board; The second input interface is connected to the second output interface; One end of the seventh relay K7, the eighth relay K8 and the ninth relay K9 are connected to one end of the third circuit breaker QF3, and the other ends of the seventh relay K7, the eighth relay K8 and the ninth relay K9 are connected to the IV conditioning board; The other end of the third circuit breaker QF3 is connected to the third input interface; The third output interface is connected to the IV conditioning board; The third input interface is connected to the third output interface.

8. A high-voltage, high-power, multi-phase motor fault verification method, characterized in that: Using the high-voltage, high-power, multi-phase motor fault verification system as described in claims 1-7, comprises the following steps: S1: Edit the automatic test script according to the test requirements, set the on-off sequence, interval breaking time, etc. of the 9-way contactor, and set the relevant parameters of the oscilloscope, power analyzer and programmable power supply; S2: The system controls the opening or closing of the multi-phase test motor in the corresponding order according to the set parameters, and collects the current signal; S3: In the data analysis and display interface, the recorded current data and the stored data of the external instrument are called, and data analysis and data comparison are performed, and the test data chart is output.

9. The high-voltage, high-power, multi-phase motor fault verification method according to claim 8, characterized in that: The step S2 comprises: S21: The driver outputs to the 9-phase power line of the test motor. After the test motor passes through the fault injection module, the 9 single-phase contactors are controlled through the DO channel of the PCI board, so as to perform separate on-off control on each phase of the test motor. S22: real-time acquisition of current signals through 9 current transformers, and connecting to the test motor through the output interface; S23: The collected current signal is converted into a voltage signal through an IV conditioning board and then collected through the AD channel of the board.

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