Analysis and Simulation of Electromagnetic Noise of Induction Motors for Electric Vehicles

doi:10.11985/2019.03.011

Abstract

Abstract:

Induction motors are widely used in the field of industry and life. It is of great importance to reduce the electromagnetic noise of induction motors due to the environmental requirements. In order to research the vibration and acoustic noise of the induction motor used in electric vehicle, the finite element method is used to compute the air-gap magnetic field of the induction motor and the spectrum of air-gap magnetic field are analyzed by fast Fourier transform (FFT), then the fundamental and harmonic magnetic potentials is obtained. By comparing the spectrum analysis results of different skew angles, the skew angle with the least harmonic content is obtained. Based on the angle of the skewed slots the electromagnetic excitation force acting on the surface of the motor is calculated according to Maxwell's law, and calculates the stress and deformation of the induction motor. Finally, the results are imported to the Workbench sound field calculation module to calculate the noise of the motor with different excitation frequencies. Based on the calculation results, the noise of an induction motor with variable frequency speed regulation can be analyzed.

Key words: Induction motor, electromagnetic noise, finite element analysis, coupled simulation

CLC Number:

TM346

HAN Rui,TANG Youyi,XU Xiongming,JIAO Kaikai,XIN Zhicheng,YAN Zhiwei,BAO Xiaohua. Analysis and Simulation of Electromagnetic Noise of Induction Motors for Electric Vehicles[J]. Journal of Electrical Engineering, 2019, 14(3): 74-80.

Figures/Tables 10

References 13

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