电动汽车用油内冷永磁轮毂电机三维温度场分析  

Analysis of 3-D temperature field of in-wheel motor with inner-oil cooling for electric vehicle

作　　者：王晓远[1] 高鹏[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《电机与控制学报》2016年第3期36-42,共7页Electric Machines and Control

基　　金：国家863高技术基金(2011AA11A259)

摘　　要：根据外转子式轮毂电机的结构及变压器油的物理特性,提出油内冷轮毂电机冷却方式。以实际样机为例,在传热学理论和有限元方法的基础上,对轮毂电机各部件间的导热系数和散热系数进行了计算,并分别建立了采用自然冷却和油内冷冷却方式轮毂电机的3-D温度场有限元分析模型。基于所建立的模型,计算并得到了不同冷却方式下轮毂电机各部件的温升曲线和温度场分布。通过计算结果与实测数据的对比分析,验证了有限元分析的正确性和油内冷冷却方式的有效性和实用性。A inner-oil cooling method based the structure of outer rotor in-wheel motor and the physical characteristics of transformer oil was presented for in-wheel motor. According to the theory of heat transfer and the finite element method,the thermal conductivity and the coefficient of heat transfer for the components of the prototype were calculated. The 3-D finite element analysis models were established for the inwheel motor with natural cooling and inner-oil cooling. The temperature rise curves and temperature field distribution were calculated for the in-wheel motors with different cooling methods. By comparing the calculation results with measurement results,the correctness of the finite element analysis and the validity of inner-oil cooling method were verified.

关 键 词：轮毂电机 油内冷 温度场 有限元法 自然冷却 

分 类 号：TM315[电气工程—电机]