Dual Active Bridgeを用いた絶縁形DC-DCコンバータの過渡特性の改善

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: 2016/09/01

タイトル(英語): Dynamic Control and Performance of an Isolated Dual-Active-Bridge DC-DC Converter

著者名: 高木　一斗（東京工業大学大学院理工学研究科電気電子工学専攻），藤田　英明（東京工業大学大学院理工学研究科電気電子工学専攻）

著者名(英語): Kazuto Takagi (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Hideaki Fujita (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)

キーワード: Dual Active Bridge，絶縁形DC-DC コンバータ，励磁電流，位相シフト制御，過渡応答　　dual active bridge，isolated dc-dc converter，magnetizing current，phase-shift control，transient response

要約(英語): This paper presents dynamic analysis and control of an isolated dual-active-bridge (DAB) dc-dc converter. Conventional control methods for the DAB converter may cause dc offsets in both inductor current and transformer magnetizing current in transient states. The dc offset in the inductor current introduces an excessive peak current through the switching devices. The dc offset in the magnetizing current cannot be neglected and may induce magnetic flux saturation. Conventional phase-shift control methods simultaneously turn on and off the diagonal switches in each H-bridge converter to produce a square-wave voltage with a 50% duty ratio. In contrast, the proposed method independently controls the diagonal switches to modify the duty ratios in transient states. The theoretical analysis derives the requirements of the switching angles for eliminating dc offsets in both inductor and magnetizing currents with a settling time as short as half a switching period. The results of experiments using a 5-kW, 20-kHz experimental system verify the validity of the proposed control method.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.136 No.9 （2016）

本誌掲載ページ: 622-628 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/136/9/136_622/_article/-char/ja/