摘要
永磁体在高速旋转时难以承受巨大的拉应力,必须对永磁体采用保护措施,目前最常用的保护措施一种是采用碳纤维绑扎永磁体,另外一种是在永磁体外面加高强度的合金保护套。针对以上两种不同的保护措施,以一台100 kW,60 000 r/min的高速永磁电机为例,分别设计了相应的保护套,并对不同工况下的转子应力分布进行了解析法推导,用3D有限元法对电机冷态和热态运行时的转子强度进行了分析和验证,同时对考虑弯曲应力时的碳纤维保护套进行了设计和计算。总结了两种保护措施的设计规律,为高速永磁电机保护套的设计提供了依据。
Due to high rotation speed, permanent magnet cannot withstand large centrifugal force. So the protective measures must be adopted. Now two protective measures are commonly used, one is banding permanent magnet with carbon fiber, the other is adding high-strength alloy protective sleeve outside the permanent magnet. The different protection measures are designed for a 100 kW, 60 000 r/min high-speed permanent magnet motor. The theoretic analysis of rotor stress under different conditions is deduced, and the strength analysis and verification of the cold and hot running are achieved by 3D finite element method. At the same time, the carbon fiber protective sleeve is designed and calculated considering the bending stress. The design rules of two protective sleeves are summarized, which provide a basis for protective sleeves design of high-speed permanent magnet motor.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2013年第S1期195-202,共8页
Proceedings of the CSEE
基金
长江学者和创新团队发展计划资助(IRT1072)
国家自然科学基金项目(51207094)
辽宁省高校创新团队支持计划项目(LT2011003)~~
关键词
高速
永磁电机
碳纤维
保护套
强度分析
high-speed
permanent magnet motor
carbon fiber
protective sleeve
strength analysis
