轴向磁通分块铁心无磁轭电机冷却系统优化  

Optimization of the Cooling System of Yokeless and Segmented Armature Axial Flux Machine

作　　者：常九健 谢地林 王晨[2] 王晓林 方建平 康鹏 CHANG Jiu-jian;XIE Di-lin;WANG Chen;WANG Xiao-lin;FANG Jian-ping;KANG Peng(Chery Automobile Co.,Ltd.,Wuhu 289403,China;Hefei University of Technology,Hefei 230002,China)

机构地区：[1]奇瑞汽车股份有限公司,芜湖289403 [2]合肥工业大学,合肥230002

出　　处：《微特电机》2020年第6期21-24,32,共5页Small & Special Electrical Machines

基　　金：科技创新2025重大专项(2018B10067)。

摘　　要：针对现有径向磁通电机功率密度低的问题,研究了一种新型直接冷却式轴向磁通分块铁心无磁轭电机(YASA),建立该种电机液冷系统传热分析模型,通过采用数值分析与计算流体动力学(CFD)相结合的方法对YASA热和流体多物理耦合场进行了研究。在此基础上,分析冷却系统传热效率、液体压力损失和冷却系统结构参数之间的关系,并对结构参数进行多目标优化,给出电机液冷系统液冷管道优化后的直径和并联数。最后通过实验测试,优化后的YASA连续输出功率为42.5 kW,比原型样机的30 kW提高41.6%。In order to solve the problem of low power density of radial flux motor,a new direct cooling yokeless and segmented armature axial flux machine(YASA)was proposed.The thermal-fluid multi-physical coupling field of YASA has been studied by combining numerical analysis and computational fluid dynamics(CFD).On this basis,the internal relationship among the output power,flow resistance and structural parameters of the cooling system was studied,and the multi-objective optimization of structure parameters was carried out.The experimental results show that the continuous output power of the optimized YASA is 42.5 kW,which is 41.6%higher than the 30 kW of the traditional machine.

关 键 词：轴向磁通分块铁心无磁轭电机 冷却系统 功率密度 计算流体动力学 压力损失 

分 类 号：TM341[电气工程—电机] TM351