Design and Optimization of a Mechanical Variable-Leakage-Flux Interior Permanent Magnet Machine with Auxiliary Rotatable Magnetic Poles  

作　　者：Tongze Sun Xiping Liu Yongling Zou Chaozhi Huang Jianwei Liang 

机构地区：[1]School of Electrical Engineering and Automation,Jiangxi University of Science and technology,Ganzhou 34100,China

出　　处：《CES Transactions on Electrical Machines and Systems》2021年第1期21-29,共9页中国电工技术学会电机与系统学报（英文）

基　　金：the National Natural Science Foundation of China under grant no.51767009;in part by the Plan Project of Jiangxi Province of P.R.China under grant no.GJJ160598 and 20181BAB206035;in part by the Program of Qingjiang Excellent Young Talents,Jiangxi University of Science and Technology(JXUST)。

摘　　要：A novel mechanical variable-leakage-flux interior permanent magnet machine(MVLF-IPMM)is proposed for electric vehicles(EVs)in this paper,which employs a mechanical flux-regulating device and auxiliary rotatable magnetic poles.The magnetic poles acting as the flux adjustors can be rotated by the additional device to vary the leakage flux in magnetic circuit and realize the adjustment of the PM flux linkage.Due to the flux-regulating effect,the flux distribution in this machine is complex and changeable.Therefore,the working principle is illustrated in detail.To obtain the perfect coordination between the dominant magnetic poles and auxiliary magnetic poles,a multi-objective optimization method is presented based on the parameter sensitivity analysis combining with the Coefficient of Prognosis(CoP).Then,some design parameters with strong sensitive are selected by the sensitivity analysis and the initial model of the proposed motor is optimized by utilizing the multi-objective genetic algorithm(MOGA).According to the result of the optimization,the machine performances of the initial and the optimal design under the different flux states are compared and analyzed to verify the validity of the new variable-flux motor and the optimization method.

关 键 词：Finite element analysis(FEA) flux regulation Interior permanent magnet machine multi-objective optimization sensitivity analysis. 

分 类 号：TM351[电气工程—电机] U469.72[机械工程—车辆工程]