Electromagnetic vibration is excited by the electromagnetic force waves generated by the air-gap magnetic field acting on the machine core. In this article, a fast and accurate calculation method of radial electromagnetic force density of surface-mounted permanent-magnet synchronous motors (SPMSMs) is proposed, and the radial force density including amplitude, frequency, and order is obtained. Comprehensively considering that the effect of the PM segmentation on electromagnetic force waves, cogging torque, and the no-load back electromotive force (back EMF), the optimal determination of the number of PM segmentation in different slot-pole combinations of SPMSMs is summarized, and six slot-pole combinations of SPMSMs with 6p36s, 4p36s, 6p9s, 8p9s, 8p12s, and 10p12s are calculated and analyzed to verify the universality of the conclusions, which lays a theoretical foundation for the weakening of the radial electromagnetic force.

中文翻译：

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基于 SPMSM 中 PM 分段的径向电磁力波减少


电磁振动是由气隙磁场作用在机芯上产生的电磁力波激发的。本文提出了一种快速准确的表面安装永磁同步电机（SPMSM）径向电磁力密度计算方法，获得了包括幅值、频率和阶次的径向力密度。综合考虑永磁体分段对电磁力波、齿槽转矩和空载反电动势（反电动势）的影响，总结了不同槽极组合的SPMSM永磁体分段数的最佳确定，对6p36s、4p36s、6p9s、8p9s、8p12s、10p12s的SPMSM的6种槽极组合进行了计算分析，验证了结论的普适性，为削弱径向电磁力奠定了理论基础。