AC hysteresis modeling of grain-oriented silicon steel considering DC hysteresis and anomalous field

Highly accurate iron loss calculations are necessary to accurately predict the efficiency of electrical equipment. Currently, most iron loss calculations for electrical equipment only take initial magnetization curves into consideration. At the same time, it is thought that the accuracy of iron loss calculations can be improved by considering the DC hysteresis characteristics and eddy currents. Grain-oriented electrical steel sheets that allow easy magnetism in one direction are widely used as iron cores in static electrical equipment. This study considers the DC hysteresis, classical, and anomalous eddy current characteristics of grain-oriented electrical steel sheets. The AC symmetrical hysteresis loops can be better fitted by considering DC hysteresis, classical, and anomalous eddy current characteristics.