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

Abstract

The invention discloses a system and a method for testing the performance of an inverter in a motor controller of a new energy automobile, and relates to the field of testing of inverters of new energy automobiles. The system is connected with an external power grid, and comprises a battery simulator, a test integrated cabinet, a motor controller, a position simulator and a motor simulator, wherein a power grid, the battery simulator, the motor controller and the motor simulator form an energy closed loop; the battery simulator, the test integrated cabinet, the motor controller, the position simulator and the motor simulator form a signal control closed loop, and the energy closed loop and the signal control closed loop jointly achieve compatible test of to-be-tested inverters of differentpower levels. According to the invention, the energy closed loop and the signal control closed loop can test the drive circuit function of the inverter and the high-voltage and high-current operationconditions, and realize the signal-level and power-level function test of the inverter in the motor controller of the new energy automobile.

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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