摘要
对一种新型自增速永磁游标电机的损耗情况进行了分析,重点分析了永磁体和铝壳中的损耗。在电磁损耗计算中采用二维时步有限元法,阐明了采用二维有限元法计算永磁体中涡流损耗的原理和注意事项,并通过三维有限元法检验了二维有限元计算永磁体涡流损耗的误差。分析了铝壳损耗的主要影响因素以及减小方法。空载计算损耗与实测损耗基本一致,验证了损耗计算方法的正确性。最后研究了不同负载情况下损耗的变化情况,以及温度对损耗的影响。
In this paper, the loss of a new low speed vernier machine is calculated based on the2 D time-stepping finite element method. The eddy current losses in the permanent magnet(PM) and the outer aluminum case are taken special consideration. For the eddy current loss in PM, the 3D time-stepping method is compared with the 2D one and the key points for the calculation of eddy loss in PM is highlighted. For the eddy current loss in the outer aluminum case, different influence parameters are analyzed and the method to reduce it is proposed. The calculated no-load loss is verified by experiment on a prototype machine. The loss calculations under different load conditions are also carried out. At the last, the influence of temperature variation on the loss characteristics is also analyzed.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第2期14-20,共7页
Transactions of China Electrotechnical Society
基金
国家重点基础研究发展计划(973计划)(2013CB035603)
国家自然科学基金重点项目(51137001)
江苏省科技支撑计划(BE2012114)
江苏省产学研联合创新基金(BY2011150)资助项目
关键词
永磁电机
损耗计算
电磁-热耦合分析
游标电机
PM machine,loss calculation,coupled electromagnetic-thermal analysis,vernier machine
