3レベルフライングキャパシタ変換器をベースとした双方向非絶縁形DC-DC変換器の効率・電力密度評価

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: 2021/09/01

タイトル(英語): Efficiency and Power Density Evaluations of Bidirectional Non-Isolated DC-DC Converter based on Flying-Capacitor Converters

著者名: 手崎　和明（東京工業大学 工学院 電気電子系），萩原　誠（東京工業大学 工学院 電気電子系）

著者名(英語): Kazuaki Tesaki (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Makoto Hagiwara (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)

キーワード: 電池電力貯蔵システム，DC-DCコンバータ，フライングキャパシタ変換器，零電流スイッチング　　battery energy storage systems，dc-dc converters，flying-capacitor converters，zero-current switching

要約(英語): This paper carries out the efficiency and power density evaluations of a bidirectional non-isolated dc-dc converter based on flying-capacitor converters using Pareto optimization method. The converter consists of a main converter with four power devices and an auxiliary converter which is formed by cascaded chopper cells. A converter design method is proposed, and the relationship between the carrier frequencies of the main and auxiliary converters, the number of chopper cells, and the efficiency and power density of the converter are analyzed quantitatively based on Pareto optimization method. Consequently, it is revealed that the maximum power density can be achieved when the number of cells is four. The validity and effectiveness of the design method presented in this paper are verified using a 200-V, 1-kW down-scale model. Further, the efficiency and power density evaluations of an actual dc-dc converter system rated at 100kW are carried out using numerical analysis based on the “MATLAB” software package and computer simulation using the “PSCAD/EMTDC” software package.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.141 No.9 （2021）

本誌掲載ページ: 718-728 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/141/9/141_718/_article/-char/ja/