基于旋转坐标的开关磁阻电动机的速度控制

Speed Control Research of Switched Reluctance Motor Based on Rotating Reference Frame

针对开关磁阻电动机的控制问题,将交流电动机控制中旋转参考坐标的理论引入开关磁阻电动机的速度控制之中。通过旋转参考坐标的变换和一定的处理,可以将开关磁阻电动机的电流参考值分解为相应的相绕组电流,从而实现电流的滞环控制。这种控制方法不仅不需要开关磁阻电动机的模型信息,同时也省略了开关角的计算,并且在不需要转矩脉动抑制措施的情况下就可以获得良好的转矩控制效果。最后,利用Matlab/Simulink给出了2种情况下的转速控制仿真结果,仿真结果表明了设计方法的正确性和有效性。

The rotating reference frame theory of the AC motor was drawn into the speed control of switchedreluctance motor(SRM)to solve its control problems. The phase currents of the SRM could be acquired from thereference current through the transformation of rotating reference frame and some special processing. Then thehysteresis current closed-loop control could be realized. The proposed control method needed not the modelinformation of the SRM,and the turn-on and turn-off computation were all omitted. In addition,excellent torquecontrol performance of the SRM could be achieved without the special measure to reduce the torque ripple. At last,two cases of simulation results are given with Matlab/Simulink. The simulation results certify the rightness andeffectiveness of the proposed scheme.