离心力作用下电机转子强度接触有限元分析
刘辉1，李大伟1，石华山1，刘方2，王群京2，刘永斌2,3
（1.安徽江淮汽车股份有限公司 技术中心，安徽 合肥 230601；2.安徽大学 电气工程与自动化学院，安徽 合肥 230601；3.中国科学技术大学 工程科学学院，安徽 合肥 230022）
摘要：永磁同步电机高转速运行时，在离心力作用下，转子与内嵌磁钢呈现非线性接触状态。介绍了此类非线性接触问题的有限元求解方法。以某分数槽集中绕组永磁同步电机转子与磁钢的接触分析为例，应用Ansys软件建立了三维有限元模型，对高速旋转工况下转子与磁钢的接触情况进行三维有限元分析，得出了应力和变形结果。结果表明该转子结构可满足电机设计转速时的机械强度要求。
关键词：电机转子；接触有限元；强度分析
中图分类号：TM341 文献标志码：A doi：10.3969/j.issn.1006-0316.2015.09.018
文章编号：1006－0316 (2015) 09－0065－03
Contact finite element in strength analysis of a motor rotor under centrifugal force
LIU Hui1，LI Dawei1，SHI Huashan1，LIU Fang2，WANG Qunjing2，LIU Yongbin2,3
( 1.R&D Center, Anhui Jianghuai Automobile Co. Ltd., Hefei 230601, China; 2.College of Electrical Engineering and Automation, Anhui University, Hefei 230601, China; 3.School of Engineering Science, University of Science and Technology of China, Hefei 230027, China )
Abstract：When a permanent magnet synchronous motor (PMSM) is running at a high speed, a non-linear contact occurs between the rotor and embedded magnets under the effect of centrifugal force. In this paper, the finite element analysis method of this kind of nonlinear contact problems is introduced. By taking the contact analysis of the rotor and magnetic steel of a fractional-slot concentrated windings PMSM for example, the software ANSYS is employed to create the 3D finite element model and a three dimensional finite element analysis of the contact situation between the magnetic steel and the rotor is carried out. The von mises stress and the sum of displacement of rotor are then obtained. Results show that the structure design can meet the requirements on mechanical strength when the motor running at the desired speed.
Key words：motor rotor；contact finite element；strength analysis
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收稿日期：2014－10－31
基金项目：安徽大学博士科研启动经费项目资助
作者简介：刘辉（1975－），安徽灵璧人，硕士，高级工程师，主要从事汽车相关技术研究与开发工作。
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