Simulation of Switched Reluctance Motor with an optimized Direct Torque Control minimizing Torque Ripple

Abstract

Switched reluctance motor (SRM) is paid more attention in industrial usage because of its simple structure and low cost. But the inherent torque vibration situation and noise caused by vibration limited its application in electrified vehicles, which requests sooth torque output. To meet the demand of minimizing torque ripple, this article presents a new direct torque control (DTC) method with a changeable reference flux and a more steady switching table to lower the torque ripple and power consumption. This new method is carried out by MATLAB simulations which show that the new DTC method enhances the response of the focused 4-phase SRM to reach the given speed faster and meanwhile minimizing the torque ripple compared to the traditional DTC method.