关键词: 永磁同步电机, 电磁噪声, 正交表, 非参数回归, 响应面优化

Abstract: Permanent magnet synchronous motor has become the preferred power source for electric vehicles due to its excellent performance. However, the high-frequency electromagnetic noise of the motor will seriously affect the driving experience of the people in the vehicle. Electromagnetic force analysis, modal analysis and vibration noise simulation was conducted on an 8-pole, 48-slot PMSM, and the radial electromagnetic force harmonics of the motor was optimized using a combination of orthogonal table and non-parametric regression fitting response surface. The surface vibration speed of the optimized motor was reduced by 37. 7%, and the noise was reduced by 8. 5%, achieving the goal of vibration reduction and noise reduction.

Key words: permanent magnet synchronous motor( PMSM), electromagnetic noise, orthogonal tables, nonparametric regression, responsive surface optimization