轮毂驱动用永磁同步电机电磁振动噪声研究

Simulation and Experimental Analysis of Electromagnetic Vibration and Noise for In-Wheel-Drive Permanent Magnetic Synchronous Electrical Motor

摘要:

研究了轮毂驱动用16极24槽永磁同步电机电磁振动噪声的仿真预测方法，并通过消声室测试结果验证了研究方法的有效性。首先，建立考虑各向异性材料特性的定子铁芯和带集中式绕组的定子系统等效模型，并利用力锤模态敲击实验验证了等效模型的有效性；其次，针对轮毂驱动电机总成，建立电磁-结构-声学多物理场耦合模型，仿真预测了在全负荷工况下电机辐射噪声；最后，利用消声室台架实验结果，验证了永磁同步电机电磁-结构-声学多物理场耦合模型的准确性。研究成果可进一步用于其他永磁同步电机设计开发和电磁振动噪声产生机理研究。

Abstract:

Electromagnetic vibration and noise prediction method of 16 poles-24 slots In-Wheel-Drive （IWD） permanent magnetic synchronous electrical motor were analyzed， which was then validated by bench test in anechoic chamber. Firstly， anisotropic material stator core and stator system with concentrated winding is established and modal results of stator system were validated by modal impact test. Secondly， for the assembly of IWD permanent magnetic synchronous electrical motor， electromagnetic， structural and acoustic multi-physical coupled model was built. Electromagnetic noise is predicted on WOT condition. Finally， electromagnetic， structural and acoustic multi-physical coupled model of permanent magnetic electrical motor was validated by bench test results in anechoic chamber. The research achievements will contribute to other permanent magnetic synchronous electrical motor design and mechanism analysis of electromagnetic vibration and noise.