开关磁阻电机新型功率变换器的研究与设计

摘要

分析了常用的开关磁阻电机公共开关型功率变换器主电路,对续流阶段相电流的影响因素进行了理论分析,说明了续流时间的长短直接影响到系统的输出转矩和转矩脉动.为了提高系统重载和高速时的调速性能,给出了几种新型的功率变换器主电路.仿真结果说明改进的新型功率变换器加速了绕组放电,缩短了续流时间,改善了电流波形,降低了转矩脉动,并提高了系统的输出功率.%The main circuit of common public switching SRM power converter was analyzed.The factors of continued flow in the current stage was analyzed, and the length of continued flow into the system directly affects the output torque and torque ripple was described.In order to improve system speed when heavy and high-speed performance, several new power converter main circuits were presented.The simulation results showed the effective improvement of the new power converter had accelerated the winding discharge, reduced the follow current time, improved the current waveform to reduce the torque ripple and improved the system' s output power.