Study on an accurate iron loss calculation method considering the non-uniformity of the magnetic flux density

High-frequency switching of the power converter enables reduction of the volume of inductors. On the other hand, a large temperature increase in the inductors occurs because the thermal resistance of the inductor increases. Hence, accurate loss calculation of the inductor is important in order to realize high-power-density converters. In the present paper, an accurate iron loss calculation method for the inductors is proposed by taking into consideration the non-uniformity of the magnetic flux density in the core.