ソフトスイッチング特性を改善した非共振形高周波リンクコンバータ

概要

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For the purpose of making operating frequency higher to deduce the dimensions and weight of a power converter and its EMI (Erectro-Magnetic Interference) problems, so-called soft-switching has become a far more important technique today. There exists typical two ways of approaches tward the ideal soft-switching circuit topologies. One is based on nonresonant converter techniques. The authors previously proposed a novel totally soft-switched high frequency converter from nonresonant approach. However, there remained a problem of undesirable effect due to parasitic diode in each bidirectional switching arm on its soft-switching characteristics. This effect is remarkable especially in the case of using MOS-FETs. This paper presents an improved arm topology to prevent such undesirable effect, and confirms total soft-switching operation by an experimental manner.
1997-01-31