I. Introduction
The switched reluctance machine (SRM) exhibits several attractive merits, such as the simplicity of structure, good applicability for harsh environments, remarkable performance over wide speed range, high reliability and fault tolerance, which make it a competitive candidate in many applications [1]–[3]. However, one of the general problems of SRM is relatively high torque ripple resulted by its doubly salient structure and magnetic saturation [4], [5], which explains why SRM is not so popular in nowadays industrial applications to a certain extent.