摘要
针对高功率密度的轮毂式永磁同步电机涡流损耗大的问题,设计了一种新型偏心磁极结构的表贴式永磁同步电机,该电机磁极外圆弧偏心且内外圆弧具有不同的弧度。采用解析法分析了新型偏心磁极结构对气隙磁通密度和涡流损耗的影响。在有限元软件中对建立的10极12槽三维电机模型进行电磁及稳态温度场仿真分析。结果表明,在电机采用新型偏心磁极结构后,1 cm^3的永磁体涡流损耗降低了17.20%,永磁体稳态温度降低了3℃,改善了轮毂式永磁同步电机的运行性能。
Aiming at the problem of high eddy current loss of in-wheel permanent magnet synchronous motor with high power density,a kind of surface mounted permanent magnet synchronous motor with novel magnetic pole structure is designed.The outer arcs of magnetic pole is eccentric and the inner and outer arcs have different arcs.The influence of the new eccentric magnetic pole structure on air gap flux density and eddy current loss is analyzed by analytical method. The 10-pole/12-slot three-dimensional motor model is built in the finite element software to simulate the electromagnetic and steady-state temperature fields.The results show that the eddy current loss of permanent magnet per cubic centimeter is reduced by 17.20% and the steady-state temperature of permanent magnet is reduced by 3 ℃,therefore, the structureimproves the running performance of in-wheel permanent magnet synchronous motor.
作者
齐晓东
高锋阳
李晓峰
李昭君
杨乔礼
袁成
Qi Xiaodong;Gao Fengyang;Li Xiaofeng;Li Zhaojun;Yang Qiaoli;Yuan Chen(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2020年第8期93-100,共8页
Journal of Electronic Measurement and Instrumentation
基金
国家重点研发计划(2018YFB1201602-06)
天津大学和兰州交通大学联合基金项目(2020056)资助。
关键词
轮毂式永磁同步电机
新型偏心磁极
涡流损耗
气隙磁通密度
稳态温度
in-wheelpermanent magnet synchronous motor
neweccentric pole
eddy current loss
air-gap flux density
the steady-state temperature
