Torque-ripple Suppression Strategy for a New Double Stator Switched Reluctance Motor Based on Predictive Control

To address the drawback of large torque ripple of switched reluctance motor (SRM), a new torque-ripple suppression strategy combining model predictive control (MPC) and torque distribution function (TSF) is proposed in this paper. The study subject of this paper is a new double stator switched reluctance motor (DSSRM) with five working modes. For the characteristics of the two stator operation of DSSRM, this paper refines the control region of MPC to improve the accuracy of control. And for the characteristics of frequent phase change of DSSRM, this paper proposes to optimize the phase change process by using PI compensator. Finally, the simulation verifies that the new control strategy has a good torque-ripple suppression effect for all the five working modes of DSSRM.

I. Introduction

Switched reluctance motor (SRM) gains interest in industrial applications due to their low manufacturing cost, simple and robust construction, wide constant power region, and high fault tolerance [1]. Although switched reluctance motors are a promising option, their drawbacks of high torque-ripple suppression and noise are still challenges to overcome when bringing SRMs to a wider range of applications.