Modal Analysis and Structure Optimization of Permanent Magnet Synchronous Motor
Modal Analysis and Structure Optimization of Permanent Magnet Synchronous Motor
复制标题
永磁同步电机模态分析与结构优化
DOI：
10.1109/access.2020.3017679
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发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
Ming Yu
中科院分区：
文献类型：
--
作者：
Jian Zhao;Zhibin Wang;Haiqiang Liu;Fan Ning;Xuewu Hong;Jingjuan Du;Ming Yu
永磁同步电机是电动汽车的核心部件，在电动汽车领域应用广泛。振动的存在会降低电机的运行效率和使用寿命，是决定电机是否正常运行的关键因素。本文以某型永磁同步电动机为试验对象。永磁同步电动机分为定子、转子和机壳三个子结构。分别得到了有限元模态结果。采用子结构模态综合方法计算了整个永磁同步电机的模态参数。找出了电机的薄弱环节，并进行了结构优化。通过模态分析的计算可以看出，优化后的电机各振型都有所减小，且二阶与五阶的幅值差最大。最后，采用激振器法对电机进行了模态试验，对试验结果进行了分析，并通过频域分析方法获得了电机的模态参数，通过对电机的模态试验验证了有限元分析结果。
Permanent magnet synchronous motors are the core components of electric vehicles and widely used in the field of electric vehicles. The existence of vibration will reduce the operating efficiency and service life of the motor, which is the key factor to determine whether the motor is running normally. In this article, a certain type of permanent magnet synchronous motor is taken as the test object. The permanent magnet synchronous motor is divided into three substructures: stator, rotor and shell. The finite element modal results are obtained respectively. The modal parameters of the whole PMSM are calculated by using the substructure modal synthesis method. The weak links of the motor are found out and the structure optimization is carried out. Through the calculation of the modal analysis, it can be seen that each vibration mode of the optimized motor has been reduced, and the amplitude difference between the 2nd order and the 5th order is the largest. Finally, the modal test is carried out on the motor using the exciter method, the test results are analyzed, and the modal parameters of the motor are obtained through the frequency domain analysis method, the FEA result is confirmed by the modal test of the motor.
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