Size Reduction of DC-DC Converter using Flying Capacitor Topology with Small Capacitance

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2014/11/01

タイトル(英語): Size Reduction of DC-DC Converter using Flying Capacitor Topology with Small Capacitance

著者名: Asmarashid Bin Ponniran (Nagaoka University of Technology), Koichi Matsuura (Nagaoka University of Technology), Koji Orikawa (Nagaoka University of Technology), Jun-ichi Itoh (Nagaoka University of Technology)

著者名(英語): Asmarashid Bin Ponniran (Nagaoka University of Technology), Koichi Matsuura (Nagaoka University of Technology), Koji Orikawa (Nagaoka University of Technology), Jun-ichi Itoh (Nagaoka University of Technology)

キーワード: inductor size，flying capacitor，output voltage ripple，flying capacitor boost chopper

要約(英語): The purpose of the present paper is to analyze the input inductor design and to establish the relationship between the capacitance of the flying capacitor and the output voltage ripple in order to reduce the size and weight of the flying capacitor DC-DC boost converter (FCBC). The inductance of the input inductor is designed by considering the maximum input current ripple, and the experimental results are used to confirm that the input current ripple is within the designed value. Furthermore, according to the design specifications, the required inductance of an input inductor is approximately 25% of that of a conventional two-level DC-DC boost converter, and the required inductor core volume is approximately 35% of that of a conventional two-level DC-DC boost converter. Moreover, the capacitance of the flying capacitor and the output voltage ripple are confirmed to be independent of each other. Theoretically, this is because the time constant of the output capacitance and the output resistance of the FCBC is larger than the switching period of the switching frequency. This finding is confirmed by the simulation and experimental results of the present study. On the basis of this finding, the capacitance of the flying capacitor can be estimated and designed without considering the output voltage ripple. Moreover, the achieved maximum efficiency of the designed FCBC is 98.5% of the output power at 1kW.

本誌: IEEJ Journal of Industry Applications Vol.3 No.6 （2014） Special Issue on Technologies of Rotating Machinery

本誌掲載ページ: 446-454 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/3/6/3_446/_article/-char/ja/