I. Introduction
Switched reluctance motor has the advantages of simple structure, small starting current, large starting torque [1], low cost, good speed regulation performance [2], high efficiency, and good reliability [3]. It has broad application prospects and great development potential in military and civil fields such as aircraft, electric vehicles, and wind power generation [4][5]. The torque density is one of the most important indices of SRM. Improving the torque density of SRM has become a research hotspot.