内置永磁同步电机减振设计与研究  

Optimized Design and Research of Vibration Reduction With an Interior Permanent Magnet Synchronous Motor

作　　者：谢颖[1] 李飞 黎志伟 蔡翔 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江省哈尔滨市150080

出　　处：《中国电机工程学报》2017年第18期5437-5445,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51107022);黑龙江省杰出青年科学基金(JC2016010)~~

摘　　要：以一台内置永磁同步电动机为例,结合有限元方法,对其电磁振动进行了研究。首先根据样机基本参数建立了二维有限元模型,分别计算了其在额定工况下运行的时间和空间磁密分布,并求解了其径向磁密,根据麦克斯韦张量法得到了其定子齿所受径向电磁力。然后基于定子齿所受径向电磁力的分布规律,提出一种定子齿顶偏移的结构来削弱定子齿受到的较大的径向电磁力。不仅削弱了幅值较大的径向电磁力,又减小了转矩波动。对优化前和优化后定子齿受径向电磁力进行对比,且分别进行了频谱分析。最后将径向电磁力作为载荷对电机进行了瞬态动力学分析,比较了优化前和优化后电机的振动位移;对优化前电机进行振动实验,与仿真结果进行对比,验证了研究方法的正确性。该文方法对内置永磁同步电机的减振降噪提供了参考依据。The electromagnetic vibration of an interior permanent magnet synchronous motor （IPMSM） was researched with the finite element analysis （PEA） method. Firstly, the 2D-FEA model was established according to the basic parameters, the distribution of time-varying flux density, spatial flux density and the radial flux density under rated-load conditions was calculated. Based on the flux density, the radial electromagnetic force was got by Maxwell equation. Then the eccentric tooth edge design was proposed to weaken the dominant radial electromagnetic force. The dominant radial electromagnetic force and torque ripple were both reduced by this design. The comparison was made between the basic design and optimized design, also their spectral analysis was compared. Finally, the electromagnetic vibration was analyzed by taking the radial electromagnetic force as load condition, and the displacement of basic prototype was compared with designed prototype. The vibration test of the basic prototype was carried out, and the simulation results were compared with the test result. The correctness of the research process was verified by the comparison. The research method can be taken as a reference for the vibration and noise reduction of interior permanent magnet synchronous motor.

关 键 词：内置永磁伺步电机 径向电磁力 齿项偏移 振动频谱分析 

分 类 号：TM343[电气工程—电机]