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Analysis of Minimum Switching Current for Zero Voltage Switching of DAB Converters Applied in Energy Storage System
编号：331 访问权限：仅限参会人 更新：2022-05-20 10:19:32 浏览：178次 张贴报告

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摘要
Dual-Active-Bridge (DAB) converters, as key interfaces, are widely used in high-frequency high-power energy storage systems. The efficiency of a DAB converter is a critical index which is mainly influenced by the backflow power, the turn-on loss, the turn-off loss and the conduction loss. With the increase of the switching frequency, achieving zero voltage switching (ZVS) by a negative current at the switching instant can greatly improve the efficiency of a DAB converter. The ZVS conditions derived from present research are not accurate, leading to achieving ZVS unsuccessfully or producing large backflow power. In addition, the ZVS conditions are generally obtained in one particular operating mode. Thus, they are not practical. In this paper, we fully consider four possible operating modes and accurately derive the corresponding minimum switching current value for achieving ZVS, with the influence of output parasitic capacitance. An optimal extended phase-shift (EPS) control for achieving ZVS under all four operating modes is designed. The optimization strategy is experimentally verified.
 
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报告人
BaiJinzhe
Shandong University

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重要日期

  • 会议日期

    05月27日

    2022

    至

    05月29日

    2022

  • 02月28日 2022

    初稿截稿日期

  • 05月29日 2022

    注册截止日期

  • 06月22日 2022

    报告提交截止日期

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