Torque Ripple Reduction for a 12/8 Switched Reluctance Motor Based on a Novel Sliding Mode Control Strategy

Abstract

A hybrid control strategy based on torque sharing function (TSF) and sliding mode control is proposed for switched reluctance motor (SRM), which can obtain smaller torque ripple and higher dynamic response speed. The conventional cosine-type TSF strategy can effectively reduce the torque ripple of the SRM at low speed, but there will be insufficient torque tracking at high speed. In order to improve the torque ripple suppression capability of TSF at high speed, a new sliding mode controller (NSMC) is designed, which can achieve smaller torque ripple and faster system response speed and improve system robustness. The final experimental results confirm the effectiveness of the control method.