Comparison of Single Phase SRM Characteristics Considering of the Rotor Type

The single phase switched reluctance motor(SRM) is simpler in control circuit because the number of switching devices is fewer than the multiphase SRM. The energy density per unit volume is high because all stator poles are excited simultaneously by a single switching power source. But it must be provided a starting device on account of not being generated the starting torque at specific rotor positions. And also it has some demerits that have a torque ripple, noise and vibration because of being excited by switching pulse power source. Therefore, to make up for these demerits, it is realized many studies for the structure design used by computer and the operating methods by power electronics technique. In this paper, we´ll present the comparison of the single phase SRM with the various rotor pole face types, as like stepped rotor pole face type and general rotor pole face type. For the torque characteristics analysis, we analyzed the magnetic flux density with FEM, and calculate the co-energy, torque.