Electromagnetic Vibration and Noise Analysis of IPMSM for Electric Vehicles under Different Working Conditions

In order to study the vibration and noise characteristics of Interior Permanent Magnet Synchronous Motor(IPMSM) for electric vehicles(EVs) under different speed regulation modes and operating conditions, a co-simulation model of ”space vector pulse width modulation(SVPWM) control-electromagnetic field” of the prototype is built to simulate the actual operation of the motor. Based on this model, a multi-physics field coupling model of vibration and noise is established and proposing a method of adding damping according to different modal orders to calculate the vibration and noise characteristics of the prototype under different speed regulation modes and operating conditions.