Influence mechanism on vibration and noise of PMSM for different structures of skewed stator

Abstract

This paper provides a detailed investigation of the influence mechanism on vibration and noise of permanent magnet synchronous motors with skewed stators. Several skewed stator structures are researched to show the features of the flux and force. The finite element method is used to analyze the motor vibrations, displacements of deformation, and modals considering the mechanism of skewed stator. The displacements are converted to the sound pressure level which can reveal the characteristics of acoustic noise. The noise performances of motors with different stator skew factors are compared to choose a best stator structure. At last, the testing motor with skewed stator were experimentally demonstrated the validity of the theoretical research.