基于负载磁场考虑涡流反作用的带护套高速永磁电机转子涡流损耗解析模型  

Rotor Eddy Current Loss Analytical Model for High-speed Permanent Magnet Motor With Sleeve Based on Loaded Magnetic Field Analysis Considering Eddy Current Reaction Effect

作　　者：佟文明[1] 侯明君 鹿吉文 吴胜男[1] 贾建国[1] TONG Wenming;HOU Mingjun;LU Jiwen;WU Shengnan;JIA Jianguo(National Engineering Research Center for Rare-earth Permanent Magnet Machines(Shenyang University of Technology),Shenyang 110870,Liaoning Province,China)

机构地区：[1]国家稀土永磁电机工程技术研究中心(沈阳工业大学),辽宁省沈阳市110870

出　　处：《中国电机工程学报》2022年第24期9072-9083,共12页Proceedings of the CSEE

基　　金：国家重点研发计划(2016YFB0300503);霍英东教育基金会高等院校青年教师基金(171049);辽宁省“兴辽英才计划”项目资助(XLYC2007107)。

摘　　要：该文基于精确子域法建立电枢磁场、永磁磁场、定子开槽共同作用下的带护套高速永磁同步电机转子涡流损耗解析模型,该模型同时计及高频谐波磁场所引起的转子涡流反作用的影响。该模型在槽子域和永磁体子域中同时考虑定子绕组电流和永磁体剩磁,故利用该解析模型可以同时计算电枢磁场、理想空载磁场和负载合成磁场作用下的转子涡流损耗;为提高解析模型计算精度,在转子导体区域内求解扩散方程以考虑涡流反作用的影响。该文通过该解析模型研究槽口宽度、护套材料和护套厚度对转子涡流损耗的影响。最后,对一台7.5kW、15000r/min的高速永磁电机进行损耗分离实验,将解析、有限元和实验得到的转子涡流损耗进行对比,验证该解析模型的有效性。Based on the precise subdomain method,a rotor eddy current loss analytical model of a high-speed permanent magnet synchronous motor with sleeve under the combined action of armature magnetic field,permanent magnetic field and stator slotting was established.The model also considered the influence of the rotor eddy current reaction caused by the high frequency harmonic magnetic field.This model considered both the stator current and permanent magnet remanence in the slot subdomain and the permanent magnet subdomain.Therefore,the analytical model can be used to calculate the rotor eddy current loss in the presence of armature magnetic field,ideal no-load magnetic field,and load magnetic field.In order to improve the calculation accuracy of the analytical model,the diffusion equation was also solved in the rotor conductor region,considering the influence of the eddy current reaction.According to this analysis model,the influence of slot opening width,sleeve material and sleeve thickness on rotor eddy current loss was studied.Finally,a loss separation experiment was carried out on a 7.5 kW,15000 r/min high-speed permanent magnet motor,and the rotor eddy current loss obtained by analysis,finite element and experiment was compared,and the validity of the analysis model was verified.

关 键 词：高速永磁电机 转子涡流损耗 涡流反作用 损耗分离实验 

分 类 号：TM351[电气工程—电机]