【摘要】 针对新能源汽车永磁电机存在的振动噪声问题，首先通过理论推导，分析产生驱动永磁同步电机径向力谐波的要素，建立电磁-结构-声耦合场仿真计算模型，从电机气隙电磁径向力密度入手，运用解析计算与有限元计算相结合的方法，计算分析电机电磁谐波的分布、模态、振动及噪声；然后建立铁基非晶合金B800和硅钢DW310＿35这2种定子材料电磁振动计算模型，进行电磁振动和噪声性能分析比较；最后，对该2种材料样机进行振动和噪声测试，并与理论计算和仿真结果比较，对理论计算和电磁-结构-声耦合场仿真计算模型的精确性进行验证。更多还原

【Abstract】 Aiming at the issues of vibration and noise of permanent magnet motors in new energy vehicles, first, through theoretical derivation, the elements that generate the radial force harmonics that drive the permanent magnet synchronous motor are analyzed, and the electromagnetic structure-acoustic coupling field simulation calculation model is established. Starting from the electromagnetic radial force density in the motor air gap, the method combining analytical calculation and finite element calculation is employed to study the vibration and noise of the motor, and the electromagnetic harmonic distribution, mode, vibration and noise levels of the motor are calculated and analyzed. Secondly, a calculation model for electromagnetic vibration of two stator materials, namely Fe-based amorphous alloy B800 and silicon steel DW310＿35, is established, and the electromagnetic vibration and noise performance are analyzed and compared. Finally, vibration and noise tests are conducted on the two types of material prototypes, and the results are compared with the theoretical calculation and simulation results to verify the accuracy of the theoretical calculation and the electromagnetic structure-acoustic coupling field simulation calculation model.更多还原