为研究高速永磁电机的转子损耗问题，本文应用有限元软件对不同类型永磁电机的转子结构的损耗的影响进行了对比和分析。建立了表面式结构转子和3种不同结构的内置式结构转子的模型，利用二维有限元法对永磁体和铁心中的损耗进行了对比分析，并且分别分析了电机转子中涡流损耗和磁滞损耗的大小，综合比较了几种不同转子结构的损耗情况，得出了内置式转子损耗小于表面式转子，并且在V型结构转子具有最小的转子损耗。并且研究了转子铁心硅钢片的厚度对转子损耗的影响。
关键词：高速永磁电机；转子结构；涡流损耗；磁滞损耗
Abstract: For the study of rotor loss problem in high speed permanent magnet motor, several methods were proposed to reduce the rotor loss by optimizing the structure of rotor in this paper. The finite element method (FEM) were used to analyze the rotor loss of the different rotor structures. Both eddy current loss and hysteresis loss in the rotor were compared and analyzed in this paper. It is concluded that there is less rotor loss in the interior rotor compared with the surface mounted rotor. Rotor loss in Vtype rotor is the least. The impact of rotor structure and silicon steel sheet thickness of rotor to the rotor loss were analyzed in the paper.
Key words: high speed permanent magnet motor; rotor loss; eddy current loss; hysteresis loss