マルチレベルDABコンバータの動作点変更時に生じる直流オフセット電流の低減法

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: 2024/07/01

タイトル(英語): A Method for Reducing DC Offset Currents Caused by Operating Point Changes in Dual Active Bridge Converter with Multilevel Inverter Topology

著者名: 上内　康暢（東京理科大学），星　伸一（東京理科大学）

著者名(英語): Yasunobu Ueuchi (Tokyo University of Science), Nobukazu Hoshi (Tokyo University of Science)

キーワード: DABコンバータ，磁気飽和，中性点クランプ変換機，3レベル変換機　　DAB converter，magnetic saturation，neutral point clamped converter，three-level converter

要約(英語): During the operation of a dual active bridge (DAB) converter, reducing the DC offset current, which causes magnetic saturation, is critical when phase shifts change. In other words, reducing the DC offset current is necessary to improve the transient characteristics of the converter. This paper proposes DC offset reduction methods applicable to DAB converters with multilevel inverter topology. The methods developed for reducing the DC offset current are determined based on the phase shift commands for the transient state. The proposed method consists of the following elements: adjustment of the phase between the legs of the active bridges, adjustment of the phase between the active bridges, and voltage polarity at phase adjustment. The effectiveness of the proposed reduction methods has been verified by performing experiments and simulations, from which the peak values of the inductor current moving average in a period of AC voltages have been observed to be lowered to 3.7A and 0.80A, respectively, using the proposed method.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.144 No.7 （2024） 特集：eモビリティを支える技術

本誌掲載ページ: 584-591 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/144/7/144_584/_article/-char/ja/