为了准确计算电机运行中的定转子铁耗,建立了电机基于2D有限元法的全磁场模型,提出了采用耦合边界法来提取旋转状态下定转子磁密波形,并对传统铁耗模型进行了修改和优化;利用该磁场模型对一台30/20电励磁双凸极电机进行了分析,利用不同励磁电流下的测量铁耗,通过回归分析求解了铁耗模型的系数;在不同转速下进行了电机铁耗理论值同实测值的对比,验证了模型的准确性.%In order to calculate the iron losses in motor accurately, the magnetic field model of the motor based on the 2D FEM were established. The extraction of the density of core flux with rotational state based on coupling boundary was proposed and the traditional calculation model of iron losses was modified and improved. Then a 30/20 doubly salient electro-magnetic motor were analyzed based on this magnetic field. With the measured iron losses of the motor applied with different exciting currents, the coefficients of the iron losses model were calculated. Finally the theoretical iron losses were compared with the measured value under different speed and the accuracy of the model was verified.
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