Design of stator and rotor for noise reduction of SRM

This paper describes the design of the stator and rotor that can reduce the acoustic noise in switched reluctance motor (SRM). Desirable structure of the SRM with 6/4 poles for reducing the acoustic noise is discussed using the finite element analysis. The radial force on the stator pole of the SRM generates the large displacement of the stator and the sound pressure level related to the acoustic noise of the motor. The noise depends on the maximum displacement of the stator. Therefore, the stator and the rotor structures that are devised to reduce the acoustic noise are proposed in this study. According to simulation and experimental results, the structure proposed can effectively reduce the acoustic noise of SRM.