五相永磁同步电机与传统三相永磁同步电机对比分析

摘要

首先阐述了五相永磁同步电机和三相永磁同步电机容错控制运行的方法,并比较分析了它们的工作性能;其次,具体、详尽阐述了五相永磁同步电机较传统三相永磁同步电机输出电磁转矩特性好的根本原因;讨论了五相永磁同步电机实现低压大功率驱动运行的机理;介绍了五相永磁同步电机定子绕组通过注入电流三次谐波以增大其电磁转矩,并实现五相永磁同步电机兼具有无刷直流电机功率密度高和正弦波永磁同步电机可控性好的优点.%A comparison analysis of the five-phase PMSM and the traditional PMSM fault tolerant control strategy was proposed.The reason was elaborated in detail that the output electromagnetic torque of five-phase PMSM was better than PMSM.The five-phase PMSM running mechanism was discussed to realize low voltage high power drive.The five-phase PMSM stator winding was introduced by injecting current harmonic three times to increase the electromagnetic torque,and combined the advantages of both PMSM with good controllability and brush dc motor with high power density.