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Experimental Verification of Reducing Power Loss under Light Load Condition of a Bi-Directional Isolated DC/DC Converter for a Battery Charger-Discharger of Electric Vehicle

Experimental Verification of Reducing Power Loss under Light Load Condition of a Bi-Directional Isolated DC/DC Converter for a Battery Charger-Discharger of Electric Vehicle

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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: 2021/05/01

タイトル(英語): Experimental Verification of Reducing Power Loss under Light Load Condition of a Bi-Directional Isolated DC/DC Converter for a Battery Charger-Discharger of Electric Vehicle

著者名: Ryota Kondo (Advanced Technology R&D Center, Mitsubishi Electric Corporation), Yusuke Higaki (Advanced Technology R&D Center, Mitsubishi Electric Corporation), Masaki Yamada (Himeji Works, Mitsubishi Electric Corporation)

著者名(英語): Ryota Kondo (Advanced Technology R&D Center, Mitsubishi Electric Corporation), Yusuke Higaki (Advanced Technology R&D Center, Mitsubishi Electric Corporation), Masaki Yamada (Himeji Works, Mitsubishi Electric Corporation)

キーワード: bi-directional isolated DC/DC converter,phase-shift control,zero-voltage switching,battery,EV

要約(英語): This paper proposes a bi-directional isolated DC/DC converter for the battery charger and discharger of Electric Vehicle to reduce the power loss under light loads. The proposed DC/DC converter consists of two full-bridge inverters, an isolated transformer, and a boost reactor, and provides bi-directional transmission, buck-boost conversion, zero-voltage-switching and reactive power suppression. Two power semiconductors of the inverter in the rectification side are turned off to block a reactive current, which increases the power loss under light loads. The phase shift amount in the two full bridge inverters are controlled continuously and simultaneously seamless power transmission. The 400V-3.5kW experimental system exhibits stable bi-directional buck-boost conversion and seamless transition between the charging and discharging modes, while suppressing the reactive power. Moreover, the proposed DC/DC converter reduces power loss by 67.5W under light loads (240W), compared with the conventional control.

本誌: IEEJ Journal of Industry Applications Vol.10 No.3 (2021)

本誌掲載ページ: 377-383 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/10/3/10_17000897/_article/-char/ja/

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