負荷に応じた動作モード切替によるフライングキャパシタ形DABコンバータの開発

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2017/10/01

タイトル(英語): Development of Flying Capacitor Dual Active Bridge Converter using Multi-mode Operation depending on Output Power

著者名: 比嘉　隼（長岡技術科学大学），伊東　淳一（長岡技術科学大学）

著者名(英語): Hayato Higa (Nagaoka University of Technology), Jun-ichi Itoh (Nagaoka University of Technology)

キーワード: デュアルアクティブブリッジコンバータ，ゼロ電圧スイッチング，フライングキャパシタ3レベルインバータ，動作モード切り替え　　dual active bridge converter，zero voltage switching，flying capacitor three-level inverter，multi-mode operation

要約(英語): This paper proposes a multi-mode operation for a five-level dual active bridge (DAB) converter using a flying capacitor (FC) topology in order to achieve a wide-load-range high efficiency over a wide output voltage range. The FC inverter alternates between three types of operations: five-level waveform operation, square wave operation, and operation of square waveform with half of the input voltage. In the multi-mode operation, the output voltage waveforms of the FC inverter are changed depending on the output power. By using multi-mode operation, zero voltage switching (ZVS) is achieved at light load against the change of the output voltage. In addition, the circulating current is also reduced compared to that of a two-level DAB converter. Therefore, the efficiency is improved by the proposed method. The experimental results show that the maximum efficiency is 96.4%. At 75% of the nominal voltage, the converter loss is reduced by 24.4% compared to that in the conventional two-level DAB converter operation.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.137 No.10 （2017）

本誌掲載ページ: 760-768 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/137/10/137_760/_article/-char/ja/