System and method for testing inverter performance in new energy vehicle motor controller

Abstract

The invention discloses a system and method for testing the performance of an inverter in a motor controller of a new energy vehicle, and relates to the field of testing the inverter of a new energy vehicle. The system is connected to an external power grid. The system includes a battery simulator, a test integration cabinet, a motor controller, a position simulator, and a motor simulator. The power grid, battery simulator, motor controller, and motor simulator form an energy closed loop; battery simulation Inverter, test integrated cabinet, motor controller, position simulator, and motor simulator form a signal control closed loop, and the energy closed loop and signal control closed loop together realize compatible testing of inverters under test with different power levels. The energy closed loop and signal control closed loop of the present invention can test the drive circuit function of the inverter and the operating conditions of high voltage and high current, and realize the signal level and power level function test of the inverter in the motor controller of the new energy vehicle .

Description

technical field [0001] The invention relates to the field of testing inverters in motor controllers of new energy vehicles, in particular to a system and method for testing the performance of inverters in motor controllers of new energy vehicles. Background technique [0002] With the continuous development of new energy vehicles, new energy vehicles have covered most models. Different models need to be matched with electric drive assemblies of different power levels. Therefore, when developing electric drive assemblies, designers need to develop motors and motor controllers of different power levels. As the control core of the electric drive assembly, the motor controller needs a lot of testing and functional verification. Therefore, it is of great significance for car companies and parts manufacturers to complete the development of the motor controller efficiently, cost-effectively and completely. [0003] In the process of realizing the present invention, the inventors f...

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Problems solved by technology

[0003] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: At present, the testing system of the inverter in the motor controller of the new energy vehicle is mainly a signal-level hardware-in-the-loop system, which cannot test the inverter. The drive circuit function of the inverter and the working conditions of high voltage and high current cannot realize the signal level and power level function test of the inverter in the motor controller of the new energy vehicle.

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