トランスリンク方式単相インターリーブPFCコンバータの入力電流解析

概要

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The novel transformer-linked single phase interleaved PFC converter has been proposed in the past. The proposed transformer-linked PFC converter can achieve the miniaturized performance for its scale and weight. As compared with the conventional single phase PFC converter, the core size and the value of the smoothing capacitor in the proposed transformer-linked PFC converter can be reduced by 50% or more. However according to a design, input filter is large compared with conventional interleaved PFC converter. Then, we should analysis ripple of input current. In this paper, the input ripple current of the proposed transformer-linked PFC converter is analytically derived using electrical and magnetic circuits. Furthermore the boost inductor of the conventional interleaved PFC converter is determined where the input current ripple of the conventional method and the proposed method is equal. Finally the operation characteristics and performances of the proposed transformer-linked PFC converter is evaluated and discussed with experimental results.