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Improvement of Light-Load Efficiency by using a Six-Arm Converter with Series-Parallel Switching

Improvement of Light-Load Efficiency by using a Six-Arm Converter with Series-Parallel Switching

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カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門(英文)

発行日: 2021/03/01

タイトル(英語): Improvement of Light-Load Efficiency by using a Six-Arm Converter with Series-Parallel Switching

著者名: Yutaro Tashiro (Nagaoka University of Technology), Hitoshi Haga (Nagaoka University of Technology)

著者名(英語): Yutaro Tashiro (Nagaoka University of Technology), Hitoshi Haga (Nagaoka University of Technology)

キーワード: DAB converter,isolated DCDC converter,quick charger

要約(英語): This paper proposes a DAB converter using two transformers as a method to improve the efficiency in the light-load region when the output voltage fluctuates. In the proposed circuit, in addition to the operation mode of the conventional DAB converter, there exist three other operation modes initiated by switching the connection of these transformers as series or parallel. In the proposed circuit, the transformer-applied voltage can be changed and efficiency can be improved by switching between series-parallel, conventional, and parallel operations according to the input/output voltage ratio. The experimental results confirmed that for the input/output voltage ratios of 1.9 and 0.25, the conversion efficiencies were 96%, and 90%, respectively, the phase difference of 30° as the light-load condition.

本誌: IEEJ Journal of Industry Applications Vol.10 No.2 (2021) Special Issue Ⅰ on “Motion Control and its Related Technologies”  Special Issue Ⅱ on “Advanced Power Electronics Technologies”

本誌掲載ページ: 273-281 p

原稿種別: 論文/英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/10/2/10_20000108/_article/-char/ja/

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