高周波フェライト直交磁心の鉄損及び温度上昇算定に関する一考察(磁気応用)

概要

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An orthogonal core is a magnetic device which can continuously control the inductance of the secondary winding with the primary dc current. Recently orthogonal core variable inductors have been used in the high-frequency region. Analysis of this device for high-frequency applications is therefore necessary. We previously proposed an analysis method based on reluctance network analysis (RNA) for the silicon steel orthogonal core used in the commercial frequency region. In order to use the orthogonal core in a high-frequency region, we must consider the increase in the core temperature due to iron loss. In this paper, we calculate the iron loss of a ferrite orthogonal core variable inductor in the high-frequency region, based on RNA, and we estimate the core temperature on the basis of the thermal equivalent circuit.
2003-04-01