A circuit model was developed to analyze the electromagnetic field in ferrites, for contribution to the design of power circuits by taking into account the power loss in the high-frequency region. The ferrite power loss in the high-frequency region consists of the hysteresis loss and the dynamic magnetic loss. This paper proposes a novel model for electromagnetic field analysis, which is able to compute the magnetic, eddy current and displacement current losses, based on the spatial network method. The validity of the method is verified by comparing the computed power losses with those obtained by the finite element method.
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The Journal of the Institute of Electrical Engineers of Japan