微特电机 ›› 2020, Vol. 48 ›› Issue (12): 27-31.

• 设计分析 • 上一篇    下一篇

不同负载下的电机温度场计算

吴尧辉, 方鑫   

  1. 河南理工大学电气工程及其自动化学院,焦作454150
  • 收稿日期:2020-03-31 出版日期:2020-12-28 发布日期:2020-12-23

Calculation of Motor Temperature Field under Different Loads

WU Yao-hui, FANG Xin   

  1. School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000,China
  • Received:2020-03-31 Online:2020-12-28 Published:2020-12-23

摘要: 为研究小型异步电机在不同负载下运行的温升情况,利用Motor-CAD软件建立电机热网络模型,基于磁热耦合法计算电机温度场。计算和对比分析电机在不同负载下的铁耗、铜耗、机械损耗、杂散损耗等损耗,将损耗加载到电机热网络模型中计算温升。结合实验测试及温升计算结果,通过对比分析验证了热网络模型在一般负载下温升计算的准确性。

关键词: 异步电机, 温升, 不同负载, 损耗, 磁热耦合

Abstract: In order to study the temperature rise of small asynchronous motor under different loads, the thermal network model of the motor was established by motor CAD software, and the temperature field of the motor was calculated based on the magneto thermal coupling method. The iron loss, copper loss, mechanical loss, stray loss and other losses of the motor under different loads were calculated and compared, and the loss was loaded into the thermal network model of the motor to calculate the temperature rise. Combined with the experimental test and temperature rise calculation results, the accuracy of temperature rise calculation of the thermal network model under general load is verified through comparative analysis.

Key words: asynchronous motor, temperature rise, different load, loss, magnetothermal coupling

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