磁-矩双调轴径向混合励磁电机的工作原理及特性研究  

Operating principle and characteristic analysis of flux-torque regulation hybrid excitation machine with axial-radial magnetic circuit

作　　者：邱洪波 马晓璐 熊斌[2] QIU Hongbo;MA Xiaolu;XIONG Bin(College of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450000,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]郑州轻工业大学电气信息工程学院,河南郑州450000 [2]中国科学院电工研究所电力设备研究部,北京100190

出　　处：《电机与控制学报》2024年第9期139-150,共12页Electric Machines and Control

基　　金：国家自然科学基金(51507156,U2004183);河南省科技攻关项目(202102210104)。

摘　　要：为了解决永磁电机磁场难以调节的问题,同时进一步提高电机转矩密度,提出一种磁-矩双调轴径向混合励磁电机。区别于传统直流调磁,在轴向交变磁动势作用下,实现磁场、力矩双调的同时,重点解决了因弱磁增速而造成力矩下降的问题。结合新拓扑结构及多状态磁路分析,揭示了轴径向磁场的耦合关系,并确定了调磁工作原理及气隙磁通表达式;通过磁极间位置变化,动态推演了附加转矩产生机理,运用麦克斯韦张量法推导了多磁场力矩表达式。在此基础上,确定了电机调磁性能及转矩性能的变化规律,并分别给出了最佳磁通切换策略,结果表明所提出的电机兼具拓宽调磁范围与提升转矩的能力。最后,基于上述分析研制一台试验样机进行了实验验证。In order to solve the problem that it is difficult to adjust the magnetic field of permanent magnet motor,and to further improve the torque density of the motor,a novel flux-torque regulation hybrid exci-tation machine(FTRHEM)with axial-radial magnetic circuit was proposed.Different from the traditional DC modulation,under the action of axial alternating magnetomotive force,the simultaneous adjustment of flux and torque was realized,and the problem of the insufficient torque caused by the magnetic flux wea-king was solved.Combined with the new topological structure and multi-state magnetic circuit analysis,the coupling relationship between the axial magnetic field and the radial magnetic field was revealed,and the operating principle of magnetic modulation and the expression of air gap flux were determined.The production mechanism of the additional torque was dynamically deduced by the position change between magnetic poles,the expressions of multi-magnetic field torques were deduced by Maxwell tensor method.Then,the variations of magnetic modulation and the torque performance were determined,and the opti-mal flux switching strategy was given respectively.The proposed motor has the ability to broaden magnetic modulation and improve torque.Finally,based on the above analysis,an experimental prototype was de-veloped for experimental verification.

关 键 词：混合励磁 磁场调节 转矩提升 拓扑结构 性能分析 

分 类 号：TM351[电气工程—电机]