In the existing permanent magnet motor drive system, the vibration and noise problems caused by motor and driver are more and more obvious and complex. Among them, the radial electromagnetic force fluctuation problem of permanent magnet synchronous motor (PMSM) stator is the most important cause of vibration and noise. The radial electromagnetic force fluctuation of PMSM stator is the main source of vibration and noise. In order to lay a solid foundation for studying the distribution of vibration and noise, the radial electromagnetic force of 12 slot 14 pole PMSM is calculated by combining Maxwell stress method and Lorentz force method. Based on the Maxwell platform, a solution model is established to analyze the radial electromagnetic force of motor in time and space. The time–space analysis diagram of radial electromagnetic force in no-load section and load section is given; it is helpful to avoid resonance point and realize low-noise design of motor.

中文翻译：

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基于麦克斯韦的永磁同步电机径向力研究

在现有的永磁电机驱动系统中，电机和驱动器引起的振动和噪声问题越来越明显和复杂。其中，永磁同步电机（PMSM）定子的径向电磁力波动问题是产生振动和噪声的最重要原因。PMSM定子的径向电磁力波动是振动和噪声的主要来源。为了为研究振动和噪声的分布奠定坚实的基础，结合麦克斯韦应力法和洛伦兹力法计算了12槽14极永磁同步电机的径向电磁力。基于Maxwell平台，建立求解模型，对电机径向电磁力进行时空分析。给出了空载段和载荷段径向电磁力的时空分析图；有利于避免共振点，实现电机的低噪声设计。