タップインダクタ方式-低降圧比DC-DCコンバータの降圧比と電力効率の解析の精度向上に関する研究

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2018/10/01

タイトル(英語): Study on Improving Precision of Analysis of Buck Ratio and Power Efficiency of Tapped-Inductor Low Buck Ratio DC-DC Converter Circuit

著者名: 修　国強（東洋大学大学院 理工学研究科 電気電子情報専攻），生駒　早紀（（株）ドコモCS），佐野　勇司（東洋大学大学院 理工学研究科 電気電子情報専攻）

著者名(英語): Guoqiang Xiu (Graduate School of Science and Engineering, Course of Electricity, Electronics and Communications, Toyo University), Saki Ikoma (DOCOMO CS, Inc.), Yuji Sano (Graduate School of Science and Engineering, Course of Electricity, Electronics and

キーワード: スイッチング電源，DC-DCコンバータ，降圧回路，降圧比，電力効率，等価回路　　switching regulator，DC-DC converter，buck circuit，buck ratio，power efficiency，equivalent circuit

要約(英語): Analysis precision of buck ratio and power efficiency in buck DC-DC converter circuit is improved by proposing adaptive equivalent circuit of flywheel diode in the circuit. In conventional analysis, the flywheel diode was replaced with single resistor of constant resistance independent of change in average diode current. Therefore its analysis precision was limited caused by large difference in voltage-current characteristics of the replaced resistor between that of the actual flywheel diode. We proposed replacing the flywheel diode with series circuit of resistor and voltage source changed their resistance and voltage according to change in average diode current. In analysis results, error in theoretical value compared with measured value of the buck ratio can be reduced from 23.7% to 6.61% in a conventional buck DC-DC converter circuit, and from 20.4% to 9.24% in tapped-inductor low buck ratio buck DC-DC converter circuit. In the analysis of power efficiency, error in theoretical value compared with measured value can be reduced from 22.5% to 5.45% in the conventional circuit, and from 25.4% to 4.76% in the low buck ratio circuit.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.138 No.10 （2018） 特集：2017電気関係学会四国支部連合大会

本誌掲載ページ: 1187-1200 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/ieejeiss/138/10/138_1187/_article/-char/ja/