带阻尼条的永磁无刷直流电机转子温度场分析

随着永磁电机的单机容量和功率密度不断增大,使得电机运行时产生的单位体积损耗显著增加.引起电机各部分温度升高,这直接影响电机的寿命和运行的可靠性.大型永磁电机的实际运行是一个非常复杂的物理过程,为了准确地描述这一物理过程,从包括电磁场和温度场在内的多场耦合的角度进行分析是必要的.本文采用有限元法围绕永磁电机转子三维温度场进行了系统地研究.

Temperature Field Analysis of the Brushless DC Motor's Rotor with the Damper Bar

With the increase in the capacity and power density of PM motor increased gradually,the unit volume loss of the motor rises obviously.As a result,the temperature in each part of motor is rising,the life and reliability of the motor is affected directly.The practical operation of large-scale PM motor is a very complicated physics phenomenon.To describe this physical process exactly,it is necessary to analyze it from the angle of coupled multi-fields including electromagnetic fields and temperature fields.This paper studies the temperature fields of PM motor by the numerical calculation in FEM,and analyzes the thermal distribution of the rotor.