本发明涉及一种基于有限公式改进数学模型的电机温度场迭代计算方法，通过循环迭代的内循环系统修正电机腔内空气温度、计及该温度对电机散热面对流传热系数的影响，确保电机腔内空气由电机定子铁心、转子铁心、轴表面吸收的热量等同于其由端盖、机壳内表面散出的热量；通过循环迭代的外循环系统计及电机温度分布对各部件材料导热系数的影响，通过改进有限公式数学模型，减少外循环迭代的计算量。具有计算精度高，计算速度快的特点，适于推广应用。

The invention relates to an iterative calculation method for the temperature field of a motor based on a finite formula to improve a mathematical model. The air temperature in the motor cavity is corrected through an iterative inner circulation system, and the influence of the temperature on the heat transfer coefficient of the motor's heat dissipation surface is taken into account to ensure the motor The heat absorbed by the surface of the motor stator core, rotor core, and shaft of the air in the cavity is equal to the heat dissipated from the end cover and the inner surface of the casing; the external circulation system of cyclic iteration takes into account the thermal conductivity of each component material by the motor temperature distribution By improving the mathematical model of the finite formula, the calculation amount of the outer loop iteration is reduced. It has the characteristics of high calculation accuracy and fast calculation speed, and is suitable for popularization and application.