基于磁-热双向耦合的牵引电机温度场分析

Temperature Field Analysis of Traction Motor Based on Magnetic-thermal bidirectional Coupling

为探究牵引电机温升问题,本文以某大型矿用电动车轮边牵引电机为研究对象,建立电机三维流动与传热耦合求解的有限元模型;并给出基本假设与相应的边界条件,采用磁-热双向耦合方法模拟计算电机的电磁场和温度场,在此基础上,分析该电机在低速满载工况下的温度场分布特性。采用这种分析方法可以实现对电机温度场特性的准确分析而且有助于电机冷却系统合理设计,为更大功率的电机综合物理场的准确计算提供了理论依据。

In order to explore the temperature rise of traction motor,this paper took a large mine electric wheel traction motor as the research object,and established a finite element model of three-dimensional flow and heat transfer coupling solution of the motor.The basic assumptions and corresponding boundary conditions were given.The magnetic-thermal bidirectional coupling method was used to simulate the electromagnetic field and temperature field of the motor.On this basis,the temperature field distribution characteristics of the motor under low-speed full-load conditions were analyzed.The accurate analysis of the temperature field characteristics of the motor can be realized by using this analysis method,which is helpful to the reasonable design of the cooling system of the motor,and provides a theoretical basis for the accurate calculation of the comprehensive physical field of the higher power motor.