Current optimization-based control of dual three-phase PMSM for low-frequency temperature swing reduction  

作　　者：Linlin Lu Xueqing Wang Luhan Jin Qiong Liu Yun Zhang Yao Mao 

机构地区：[1]Key Laboratory of Optical Engineering,Chinese Academy of Sciences,Chengdu 610209,China [2]Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]College of Electrical Engineering,Sichuan University,Chengdu 610065,China

出　　处：《Defence Technology（防务技术）》2024年第4期238-246,共9页Defence Technology

基　　金：supported by the National Natural Science Foundation of China(No.62271109)。

摘　　要：In this paper,a control scheme based on current optimization is proposed for dual three-phase permanent-magnet synchronous motor(DTP-PMSM)drive to reduce the low-frequency temperature swing.The reduction of temperature swing can be equivalent to reducing maximum instantaneous phase copper loss in this paper.First,a two-level optimization aiming at minimizing maximum instantaneous phase copper loss at each electrical angle is proposed.Then,the optimization is transformed to a singlelevel optimization by introducing the auxiliary variable for easy solving.Considering that singleobjective optimization trades a great total copper loss for a small reduction of maximum phase copper loss,the optimization considering both instantaneous total copper loss and maximum phase copper loss is proposed,which has the same performance of temperature swing reduction but with lower total loss.In this way,the proposed control scheme can reduce maximum junction temperature by 11%.Both simulation and experimental results are presented to prove the effectiveness and superiority of the proposed control scheme for low-frequency temperature swing reduction.

关 键 词：Dual three-phase PMSM Low-frequency temperature swing Copper loss Current optimization Connected neutral points 

分 类 号：TJ5[兵器科学与技术—军事化学与烟火技术] TM341[电气工程—电机]