高功率密度水冷永磁同步电机热分析
任庆1，刘辉1，孙泽辉2
（1.安徽江淮汽车集团股份有限公司 技术中心，安徽 合肥 230601；2.安徽大学 电气工程与自动化学院，安徽 合肥 230039）
摘要：针对稳态及瞬态两种情况对水冷永磁同步电机进行了温度场模拟分析。稳态温度场分析结果显示，定子绕组的热阻最大，是影响散热效果最关键的因素；电机温度最高点在绕组端部，有必要采用强化端部散热措施。瞬态温度场分析表明，高功率密度电机短时大过载运行时，水冷系统对绕组局部瞬时温升的影响不显著。
关键词：永磁同步电机；稳态温度场；瞬态温度场；数值仿真
中图分类号：TM341 文献标志码：A doi：10.3969/j.issn.1006-0316.2017.03.004
文章编号：1006－0316 (2017) 03－0014－04
Thermal Analysis of Water-cooled High Power Density PMSM Motors
REN Qin1，LIU Hui1，SUN Zehui2
( 1.Technology Center, Anhui Jianghuai Automobile Group Corp., Ltd., Hefei 230601, China;
2. School of Electrical Engineering and Automation, Anhui University, Hefei 230039, China )
2. School of Electrical Engineering and Automation, Anhui University, Hefei 230039, China )
Abstract：Numerical simulations of steady and transient temperature field were carried out on a high power density water-cooled PMSM motor. The results of steady temperature field simulation revealed that the highest temperature rise occurs in the ends of the windings, and that the thermal resistance of the windings is largest. Thus the key factor that affects the heat dissipations is the thermal resistance of windings and strategies of enhanced heat dissipations on the ends of windings are entailed. Transient results showed that for short-time peak torque operation conditions, the presence of water-cooling system has little impact on the hottest point temperature.
Key words：PMSM motor；steady temperature field；transient temperature field；numerical simulation
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收稿日期：2016－09－09
作者简介：任庆（1988－），女，陕西兴平人，本科，电驱动工程师，主要从事车用电驱动系统相关技术研究与开发工作；刘辉（1975－），男，安徽灵璧人，硕士，正高级工程师，主要从事新能源汽车相关技术研究与开发工作。
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