超高速永磁同步电机（PMSM）具有转速高、径向力波阶数低等特点，但定子易共振引发较大噪声。以1台超高速PMSM为例，依据电机实际尺寸，建立了电机电磁场模型和定子结构的3D模态模型。采用有限元法对该电机的径向电磁力进行仿真，分析了引起电机振动的主要电磁力谐波次数，确认了电机电磁噪声的主要来源。最后,通过ANSYS声场的声压级云图研究了超高速PMSM的电磁噪声特性。

Ultra-high-speed permanent magnet synchronous motor (PMSM) has the characteristics of high speed and low radial force wave orders, but its stator is easy to resonate and cause loud noise. Taking an ultra-high-speed PMSM as an example, the electromagnetic field model of the motor and the 3D modal model of the stator structure are established based on the actual size of the motor. The radial electromagnetic force of the motor is simulated by finite element method, and the main harmonic frequencies of the electromagnetic force causing the vibration of the motor are analyzed, through which the main source of electromagnetic noise is confirmed. Finally, the electromagnetic noise characteristics of ultra-high-speed PMSM are studied by using the sound pressure level cloud image of ANSYS.

广东省重点领域研发计划项目(2019B090909002)