漏磁可控类宽调速永磁电机磁通可变区域设计  

Flux-region-variable design of a wide-speed-range permanent magnet motor with controllable flux leakage

作　　者：朱孝勇[1] 周雪 项子旋[1] 徐磊[1] 樊德阳 全力[1] ZHU XiaoYong;ZHOU Xue;XIANG ZiXuan;XU Lei;FAN DeYang;QUAN Li(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7期1399-1413,共15页Scientia Sinica(Technologica)

基　　金：国家重点研发计划(编号:2022YFB2502700,2022YFB2502703)资助项目。

摘　　要：永磁电机在电动汽车领域已经获得了广泛应用,但由于该类电机存在调速范围较窄、高速弱磁区效率低等不足,电动汽车续驶里程提升和整车动力性能改善仍受到一定限制.针对电动汽车多运行工况需求,研究兼具高功率密度、宽调速运行能力、广域高效等优点的高品质驱动电机系统,目前已成为车用永磁电机领域面临的新的难题之一.为破解该科学难题,本文提出一种磁通可变区域设计方法,巧妙通过不同工况下的电枢电流的改变,可以在该区域获得多个可变磁阻通路,从而在改变电机的漏磁通和有效磁通的同时,有效提高永磁类电机磁通调节能力.本文基于该新型区域磁通可变设计方法,提出了一类漏磁可控式宽调速永磁电机,分析了不同工况下的磁障及其相应的可变磁阻通路对有效磁通、磁通调节能力等性能影响的一般规律.研究表明,所提出的漏磁可控式宽调速永磁电机具有更强的磁通调节能力,并拥有更高的输出转矩、更宽的调速范围以及高效率运行区间.Currently,permanent magnet motors have been widely employed in electric vehicles,but due to their limitations,such as narrow speed range and low efficiency in the flux-weakening region,improvement in the driving range and vehicle power performance of electric vehicles is still limited.To meet the requirements of electric vehicles in multiple operation conditions,developing highquality drive motor systems with the advantages of high power density,wide speed range,and high efficiency has become one of the most widely studied topics in the field of automotive permanent magnet motors.To address this scientific problem,a flux-regionvariable design methodology was established.By changing the armature current under different operation conditions,multiple variable magnetic reluctances and magnetic paths can be innovatively obtained in this region to effectively enhance the fluxregulation ability of the permanent magnet motor while changing the leakage flux and effective flux of the motor.Moreover,based on this new flux-region-variable design methodology,a type of wide-speed-range permanent magnet motor with controllable flux leakage was proposed.The general rule of the influence of the magnetic barriers and the corresponding variable reluctance path on the effective flux and the flux-regulation ability under different operation conditions was analyzed.The findings revealed that the proposed permanent magnet motor with controllable flux leakage has strong flux-regulation ability,high output torque,wide speed range,and wide efficient operating range.

关 键 词：永磁电机 漏磁可控 磁通可变区域设计方法 磁通调节能力增强 多变工况 

分 类 号：TM351[电气工程—电机]