Analysis of Permanent Magnet Synchronous Motor (PMSM) under Vibration Effect using Analytical Magnetic Field Calculations

Abstract

In recent years Permanent Magnet Synchronous Motor (PMSM) drives are gradually replacing induction motors drives in engineering fields. This is becoming a trend due to some key features of PM motors, including compactness, efficiency, and robustness, reliability, and shape adaptation to the working environment. Based on analytical magnetic field computation techniques, the analytical solutions for electromagnetic vibration sources such as torque ripple, cogging torque, and radial force density have been developed. By applying FFT analysis to these vibration sources, the specific harmonic orders and the corresponding frequencies that affect vibration of the PMSM’s stator have been investigated. It is observed that results are in good agreement with the predicted values.