基于进化策略的轮毂电机永磁体结构优化设计  

Optimal Design of Permanent Magnets of In-wheel Motor Based on Evolution Strategy

作　　者：王晓远[1] 高鹏[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津市南开区300072

出　　处：《中国电机工程学报》2015年第4期979-984,共6页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2011AA11A259)~~

摘　　要：在永磁电机设计中,永磁体(permanent magnet,PM)作为励磁磁源,其结构、尺寸直接影响电机的性能。进化策略(evolution strategies,ES)是一类仿效自然选择和基因突变的智能优化算法,具有适应性广、鲁棒性好、适用于并行计算等优点。该文将ES引进到永磁电机PM结构的优化设计中,并将有限元分析(finite element analysis,FEA)与ES相结合进行优化设计。以一台8.5 k W的轮毂电机作为优化对象,通过联合ES和FEA对PM结构尺寸进行优化,轮毂电机的齿槽转矩有效减小了81.7%,平均电磁转矩增大了5.3%。The permanent magnets（PMs） are the magnetic excitation source in the permanent magnet synchronous motor（PMSM）. The shape and sizes of PMs could seriously affect the performance of the PMSM. The evolution strategies（ES） is an intelligent optimization algorithm to imitate the natural selection and gene mutation. It has wide adaptability and strong robustness to solve optimization problem. It is suitable for parallel computation. Taking an 8.5 k W in-wheel motor as the optimization object, the shape and sizes of the PMs were optimized by combining use of ES and finite element analysis（FEA）. The results show that the cogging torque is effectively reduced by 81.7%. The electromagnetic torque is increased by 5.3%.

关 键 词：进化策略(ES) 轮毂电机 永磁体 有限元分析(FEA) 齿槽转矩 电磁转矩 

分 类 号：TM371[电气工程—电机]