永磁同步电机转矩切换响应分析及仿真

摘要

为使电动汽车获得理想补偿横摆力矩,需要控制电机实际输出转矩能跟踪上所需的高频、不定向切换转矩.以面贴式永磁同步电机为研究对象,分别搭建电流矢量控制、直接转矩控制仿真模型,并以固定频幅的方波作为模型输入,对两种控制方法的高频切换转矩跟踪响应性能进行对比仿真分析,仿真结果表明电流矢量控制的跟踪性能更优越.%In order for the electric vehicle to obtain the ideal compensation yaw moment,it is necessary to control the actual output torque of the motor to track the required high frequency,non-directional switching torque.The surfacemounted permanent magnet synchronous motor was taken as the research object.The current vector control and the direct torque control simulation model were built respectively.The performance of the high frequency switching torque tracking response of the two control methods was simulated and analyzed while the fixed frequency and amplitude square wave was taken as the model input.The simulation results show that the tracking performance of the current vector control is more superior.