Design of the single phase SRM for the blower considering self-starting

Abstract

The single phase switched reluctance motor (SRM) is more simpler on control circuit because the number of switching devices is fewer than the poly phase SRM. The energy density per unit volume is very 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. Especially, compared the poly phase SRM the starting ability of single phase SRM has a problem that is not able to start at the specific position on stopping. So, it was developed the single phase SRM with permanent magnet for the rotor to park at the rotatable position. And there is the single phase SRM with a cam type rotor. By the way, in the case of using the permanent magnet, single phase SRM reduce a torque and increase the torque. In this study, with reference to the traditional electric machine design theory and poly phase SRM design method, we design the prototype model of the single phase SRM with a novel starting method for a blower and analyze it's the characteristics by the FEM.