高速内嵌式永磁电动机转子机械强度分析  

Mechanical Strength Analysis of High Speed Interior Permanent Magnet Motor

作　　者：陈远扬[1] 韩则胤[2] 陈阳生[1] 

机构地区：[1]浙江大学,浙江杭州310027 [2]中国航天万源国际集团有限公司,北京100176

出　　处：《微特电机》2012年第5期5-9,18,共6页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(50677059)

摘　　要：转子的强度和应力分析是设计高速内嵌式永磁电机的一个重要环节。在电机高速运行时,隔磁桥作为IPM电动机转子结构最容易断裂的部分,主要承受离心力、电磁力以及永磁体吸引力三种力的作用。利用电磁和结构有限元计算,可以分析出隔磁桥和极靴部分的形变和应力分布。提出了一种高效的机械强度分析方法。与传统的有限元法相比,该方法无需进行物理场的切换,计算量大大减少。仿真和实验结果表明该方法实用有效。Strength and stress analysis for rotor was an important part of interior permanent magnet （IPM） motor de- sign. Bridges were the weakest parts in the rotor, which mainly bore three kinds of forces including centrifugal force, electro- magnetic force and attraction force. Electromagnetic and structural finite element method （FEM） analysis were used to pre- clict the maximum stress and deformation of the bridge and pole shoe. The whole process was complicated. A simplified me- chanical strength analysis method ,which had simplified the calculation greatly, was presented. The effectiveness of the proposed method was verified by simulation and experimental results.

关 键 词：内嵌式永磁电动机 机械应力 FEM 强度分析 

分 类 号：TM351[电气工程—电机]