一种开关磁阻电机限频率电流控制方法

摘要

A current control method suitable for switched reluctance motor was proposed. On the one hand, the method can limit maximal chop frequency,on the other hand, avoid loss of voltage brought about by unnecessary chopper. Firstly, the basic principles of the method was introduced, then the characteristics of the method was analyzed, and made simulation with Matlab/Simulink. Finally introduced the implement thinking of the current controller used CPLD. The results show that the current control method is stable and has small current fluctuations, can reduce the switching loss, enhance the switched reluctance motor drive(SRD) dynam-ic property effectively,%提出了一种适用于开关磁阻电机的电流控制方法.该方法一方面限制斩波的最高频率,另一方面能避免不必要的斩波带来的电压损失.首先介绍了该方法的基本原理,然后对该方法的特性进行了分析,并在Matlab/Simulink中做了仿真.最后介绍了用CPLD实现该方法的思路.结果表明,该电流控制方法稳定性好,电流波动小,能有效降低开关损耗、提高开关磁阻电机调速系统的动态性能.