电动车电机驱动系统性能测试平台

his paper designs a test bench for electric vehicle (EV) driving system, where AC induction motor functions as the dynamometer. Switched reluctance motor (SRM) is selected as the drive motor of EV, and preliminary performance tests for SRM EV driving system are carried out. The drive motor and the dynamometer are in the coaxial connection. The motor speed and its variation are detected via the single chip microcomputer combined with external circuits in real-time. Based on the sensed speed and acceleration, the required load torque of the drive motor is calculated and then used to simulate the vehicle inertia and external force. The comparisons between experimental and simulation results indicate that the proposed test bench can measure the speed accurately and has a good dynamic loading performance. Moreover, it has the advantages of universality, small volume and low cost, and therefore can be used to test different driving systems.