中文摘要：

首先通过对永磁同步电机在不同偏心形式下的径向电磁力波进行时空二维分解，结合径向电磁力波的解析表达式，分析了转子不同偏心形式对径向电磁力波空间阶次和频率特性的影响，然后分别采用模态叠加法和声学边界元法对转子偏心下的电磁振动和噪声进行仿真计算，在此基础上分析了转子不同偏心形式对电磁振动和噪声的影响，合理解释了偏心使电机振动和噪声加剧的原因。结果表明，转子静态和动态偏心均会使电磁振动和噪声增大，且电磁振动和噪声峰值会偏移至更靠近定子低阶模态频率处；在相同的偏心量下，动态偏心下电磁振动和噪声相较于静态偏心更大。

英文摘要：

This paper presents the research on the vibration and noise of permanent magnet synchronous motor with rotor eccentricity. Analytical models of radial electromagnetic force under different kinds of rotor eccentricity were established, and the spatial distribution and frequency characteristics of the electromagnetic force were analyzed. Vibration and noise of a PMSM prototype with rotor eccentricity were calculated through mode superposition method and acoustic boundary element method. Based on the results, the influence of rotor eccentricity was analyzed, and the raise of vibration and noise was explained reasonably. The results show that both static eccentricity and dynamic eccentricity increase the vibration and noise, and the peak values of the vibration and noise move to the lower order stator modal frequency due to eccentricity, besides the dynamic eccentricity produces higher vibration and noise compared to the static eccentricity with the same eccentricity degree.