励磁電流を用いたZVSサージ抑制プッシュプル型DC-DCコンバータ

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: 2017/02/01

タイトル(英語): Method for Reducing Surge Voltage and Turn-on Loss in Push-pull DC-DC Converters

著者名: 白川　和博（（株）デンソー），徳舛　彰（（株）デンソー），高橋　将也（（株）デンソー），寺　貴広（（株）デンソー），瀧　浩志（（株）デンソー），清水　敏久（首都大学東京）

著者名(英語): Kazuhiro Shirakawa (DENSO CORPORATION), Akira Tokumasu (DENSO CORPORATION), Masaya Takahashi (DENSO CORPORATION), Takahiro Tera (DENSO CORPORATION), Hiroshi Taki (DENSO CORPORATION), Toshihisa Shimizu (Tokyo Metropolitan University)

キーワード: プッシュプル DC-DC コンバータ，励磁電流，ゼロ電圧スイッチング，SiC-MOSFET　　push-pull DC-DC converter，excitation current，zero voltage switching，SiC-MOSFET

要約(英語): This paper proposes a new method to suppress surge voltage on diodes used in the rectifier circuit of push-pull type DC-DC converters. In cases in which the rectifier circuit is connected to the center-tapped winding of a transformer, a large surge voltage amplitude appears on the rectifier diodes, owing to commutating operations. Conventionally, an RC-type snubber circuit is connected to the diodes; however, this results in large amounts of power loss on the snubber circuit and causes a significant reduction in the overall conversion efficiency of the power converter. In order to overcome these problems, this paper proposes a new surge suppression method. In this method, the magnetizing current flowing in the secondary winding of the transformer is transferred to the primary winding during the commutating period, and the current flowing through the output capacitance of the rectifier diode to turn off is absorbed. Hence, the surge voltage on the rectifier diode is reduced, and the surge voltage on the switching devices connected to the primary winding of the center-tapped transformer is also reduced. The effectiveness of the proposed method is verified through a 3kW experimental setup; a high efficiency rate of 98.5% was achived, and surge voltage was minimized on all switching devices.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.137 No.2 （2017） 特集：平成28年産業応用部門大会

本誌掲載ページ: 119-128 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/137/2/137_119/_article/-char/ja/