重庆理工大学学报（自然科学）

重庆理工大学学报（自然科学） ›› 2023, Vol. 37 ›› Issue (2): 97-103.doi: 10.3969/j.issn.1674-8425(z).2023.02.011

• “新能源汽车能量管理技术研究”专栏 • 上一篇    下一篇

油水复合冷却下永磁同步电机温升特性

何联格，胡书凡，屈 翔   

  1. １．重庆理工大学 汽车零部件先进制造技术教育部重点实验室，重庆 ４０００５４； ２．北京信息科技大学 现代测控技术教育部重点实验室，北京 １００１９２； ３．重庆青山工业有限责任公司，重庆 ４０２７６１）
  • 出版日期:2023-03-21 发布日期:2023-03-21
  • 作者简介:何联格，男，讲师，博士／博士后，主要从事动力系统结构可靠性研究，Ｅｍａｉｌ：ｈｅｌｉａｎｇｅ＠ｃｑｕｔ．ｅｄｕ．ｃｎ。 通讯作者 黎杰，男，教授级高级工程师，主要从事汽车检测与控制研究，Ｅｍａｉｌ：１０６ｌｊ＠１６３．ｃｏｍ

Temperature rise characteristics of a permanent magnet synchronous motor under oil-water compound cooling

  • Online:2023-03-21 Published:2023-03-21

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摘要： 针对某车用永磁同步电机绕组端部温度高、散热难的特点，采用在电机绕组端部增 加喷油管的方法对油水复合冷却条件下的永磁同步电机的温升特性进行计算，研究永磁同步电 机水冷和油水复合冷却对温升特性的影响。研究结果表明：增加绕组端部喷油管的油水复合冷 却方案对电机冷却效果十分显著，电机绕组最高温度大幅度降低，高低温区温差较小，起到良好 的温度均衡作用；且 ２种额定工况下，油水复合冷却方案较水冷方案下电机最高温度降低 ２７ ℃，冷却效果较水冷方案提升 ２０％、１９％。

关键词: 永磁同步电机, 水冷, 油水复合冷却, 温升特性

Abstract: For the characteristics of a high temperature and difficulty in heat dissipation of the winding end of a vehicle permanent magnet synchronous motor, this paper calculates the temperature rise characteristics of the motor under oil-water compound cooling conditions by adding an oil injection pipe to the end of the motor winding. The effects of water cooling and oil-water compound cooling on temperature rise characteristics of a permanent magnet synchronous motor are studied. The findings indicate that, when combined with an oil injection pipe at the winding end, the oil-water compound cooling strategy significantly cools the motor. The maximum temperature of the motor winding significantly reduces, and the temperature difference between high and low temperature zones is small, which plays a good role in temperature balancing. Besides, under the two rated operating conditions, compared with the water cooling scheme, the maximum temperature of the motor reduces by 27 ℃ in the oil-water compound cooling, with an improved cooling effect of 20% and 19% respectively.

中图分类号: 

  • TM341