非理想反电动势的无刷直流电机的转矩脉动抑制策略研究

Study of Restraint Method for Torque Ripple of Brushless DC Motors with Non-ideal Back-EMF

本文根据永磁无刷直流电动机的实际反电动势波形,基于坐标变换,提出一种基于dq0坐标系下的任意反电动势波形无刷直流电动机的id=0的矢量控制方法,根据所求q轴电流进行跟踪控制来消除转矩脉动。仿真结果表明这种方法对抑制永磁无刷直流电动电磁转矩脉动十分有效。

According to the actual back-EMF waveforms of BLDCM,it proposes a novel id=0 vector control method of general shape back-EMF BLDCM in the dq0 frame based on coordinate transformation.In order to minimize the torque ripple,it use the calculated i qto implement tracking control. The simulation results show that this control technique can effectively minimize the torque ripple caused by distortion of the back-EMF.