Stator structure for reducing noise in switched reluctance motor

This paper describes the stator structure of switched reluctance motor (SRM) that can reduce the acoustic noise. The bias of the stress on the stator pole of SRM generates the large displacement of the stator and the sound pressure level that equals the acoustic noise of the motor. The noise depends on the maximum displacement of the stator. Therefore, the trapezoidal shape of the stator pole and the improved stator yoke structure are proposed to achieve the purpose of this study. According to simulation and experimental results, the stator structure designs including the stator pole shape proposed show the effect of reducing the noise.