300 kW航空高速永磁发电机分析与设计  

Analysis and design of 300 kW aerospace high-speed PM generator

作　　者：魏嘉麟 王又珑[1,2,3] 温旭辉 陈晨[1] 李文善 WEI Jialin;WANG Youlong;WEN Xuhui;CHEN Chen;LI Wenshan(Key Laboratory of Power Electronics and Electric Drive,Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology,Jinan 250100,China)

机构地区：[1]中国科学院电工研究所,中国科学院电力电子与电气驱动重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]齐鲁中科电工先进电磁驱动技术研究院,山东济南250100

出　　处：《电机与控制学报》2023年第9期63-72,共10页Electric Machines and Control

基　　金：中国科学院稳定支持基础研究领域青年团队计划(YSBR-045);中国科学院青年创新促进会(2018168)。

摘　　要：针对航空高速永磁(PM)发电机设计受到多物理场约束以及Halbach阵列磁体内部存在低磁密区域的问题,建立基于任意磁导率转子轭的Halbach磁体通用电磁解析模型,使用模型分析低磁密区域形成机理及影响因素,评估不同工况下磁体的退磁情况,并提出满足高速电机约束的改进措施。使用场路耦合有限元法(FEA)分析转子涡流损耗,结合解析模型和电机温升计算优化磁体分段以及选择控制器类型,实现磁体的综合设计。将模型和分析方法用于一台300 kW、30 000 r/min高速永磁发电机的设计,制造样机并进行T型三电平变流器控制下的发电实验。样机实验和FEA仿真结果验证了模型的精度以及设计的有效性,为Halbach阵列磁体在航空高速永磁发电机中的应用提供了一定的参考。Aiming at the problems that the multi-physics constraints of aerospace high-speed permanent magnet(PM)generator and the low flux density parts of the Halbach-array magnet,the general electromagnetic analytical model of Halbach-array magnet based on the rotor yoke with arbitrary permeability was developed.The mechanism and influence factors of low flux density parts were analyzed,and the partial demagnetization risk under different working conditions was assessed by the analytical model.Then the improvements that satisfied constraints of the high-speed machine were proposed.In order to achieve comprehensive design of the magnet,field circuit coupled finite element analysis(FEA)was used to analyze eddy current loss of the rotor,and the analytical model and temperature rise calculation was combined to optimize the magnet segmentation.The above model and analysis methods were applied to the design of a 300 kW,30000 r/min high-speed permanent magnet generator.The prototype was manufactured and the power generation experiments supplied by T-type three-level converter were carried out.Experimental results of the prototype and FEA results were given to verify the accuracy of the models and the effectiveness of the design methods,which is helpful on the application of Halbach-array in aerospace high-speed permanent magnet generator.

关 键 词：高速永磁发电机 HALBACH阵列 通用解析模型 退磁 场路耦合 涡流损耗 

分 类 号：TM351[电气工程—电机] TM355