基于虚拟信号注入的新型五相磁场增强型永磁电机主动式MTPA策略  

Active maximum torque per ampere strategy of a new five-phase fluxintensifying permanent magnet motor based on virtual signal injection

作　　者：张丽 陈希 朱孝勇[1] 韩赛 ZHANG Li;CHEN Xi;ZHU XiaoYong;HAN Sai(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《中国科学：技术科学》2024年第6期1198-1210,共13页Scientia Sinica(Technologica)

基　　金：国家自然科学基金(批准号:52277051,51937006);国家重点研发计划(编号:2022YFB2502703)资助项目。

摘　　要：对于五相永磁电机最大转矩电流比(maximum torque per ampere,MTPA)控制系统,由于电机交叉耦合及饱和效应的存在,极大影响MTPA控制精度,无法满足其用于电动汽车领域的多工况运行需求.针对此问题,本文从电机驱动系统的角度,提出一种新的主动式MTPA策略.在电机设计阶段,提前考虑基于虚拟信号注入的MTPA(MTPA based on virtual signal injection,VSI-MTPA)控制精度,提出一种反凸极效应增强的五相磁场增强型内置式永磁容错(flux-intensifying fault-tolerant interior permanent magnet,FIFT-IPM)电机,以抑制交叉耦合及饱和效应对MTPA点追踪精度的影响;同时从控制算法的角度,针对五相FIFT-IPM电机的反凸极特性,提出相应的高精度VSI-MTPA控制策略,进一步提升五相FIFT-IPM电机MTPA控制驱动系统的动稳态性能.最后,搭建电机驱动系统实验平台,验证所提策略的可行性和有效性.The control accuracy of the maximum torque per ampere(MTPA)control system of a five-phase permanent magnet motor is greatly affected by the cross-coupling and saturation effect of the motor;thus,it cannot meet multiple operating requirements for applications in electric vehicles.To overcome this,a new active MTPA strategy from the perspective of a motor drive system is proposed in this work.At the motor design stage,considering the control accuracy of MTPA based on virtual signal injection(VSI-MTPA),a fivephase flux-intensifying fault-tolerant interior permanent magnet(FIFT-IPM)motor with an enhanced negative saliency effect was proposed to suppress the influence of the cross-coupling and saturation effect on the tracking accuracy of the MTPA point.Moreover,for the negative saliency of the five-phase FIFT-IPM motor,a high-accuracy VSI-MTPA control strategy was proposed from the perspective of control algorithms to further improve the dynamic and steady-state performance of the motor drive system.Finally,the experimental platform of the FIFT-IPM motor drive system was built to verify the feasibility and effectiveness of the proposed strategy.

关 键 词：五相永磁电机 最大转矩电流比 交叉耦合及饱和效应 反凸极 虚拟信号注入 

分 类 号：TM351[电气工程—电机]