永磁式双凸极电机新型开通关断角控制策略  

A Novel Control Strategy of Turn-on Angle and Turn-off Angle for Doubly Salient Permanent Magnet Motor

作　　者：马长山[1] 周波[1] 

机构地区：[1]南京航空航天大学航空电源航空科技重点实验室,江苏省南京市210016

出　　处：《中国电机工程学报》2007年第24期68-73,共6页Proceedings of the CSEE

基　　金：江苏省高技术项目(BG2004009).

摘　　要：采用标准角度控制的永磁式双凸极电机,在换相时三相同时导通或关断,产生较大换相转矩脉动。该文通过对电机内部电磁场的有限元计算,分析了转矩脉动形成机理。为减小换相转矩脉动,提出新型开通角和关断角控制策略。该方法通过提前导通功率变换器上管、滞后关断其下管,对一个周期内的导通模式进行细分,通过换相前后,两相和三相导通方式的切换,提高换相时刻输出转矩,减小电机转矩脉动。根据有限元分析的电感和磁链数据,构造永磁式双凸极电机调速系统非线性仿真模型,并将其与标准角度控制方式进行仿真与实验比较,验证了新型控制策略的正确性。The law of standard angle control strategy produces biggish torque ripple because three phases are turned on or turned off for doubly salient permanent magnet （DSPM） motor at the same time. On the base of applying finite element analysis method to DSPM motor, the cause of torque ripple is analyzed in detail. A novel control system is proposed in order to reduce commutation torque ripple. The strategy advances conducting the up power tubes and delays closing the down power-switching devices. The mode of switch is subdivided in the period. There is a transition between two phases and three phases control. The torque ripple of the motor is reduced and the torque production is enhanced at phase conversion. A simulation model of DSPM motor is designed according to the value of flux linkage and induction. The validity of the novel control system is verified by simulation and test. The low speed contrast between the law of standard angle control and the novel control through test indicates that the novel control can reduce torque ripple greatly.

关 键 词：永磁式双凸极电机 有限元 转矩脉动 开通角 关断角 

分 类 号：TM359[电气工程—电机]