Isolated Bidirectional Full-Bridge DC-DC Converter With a Flyback Snubber

被引:245
作者
Wu, Tsai-Fu [1 ]
Chen, Yung-Chu [1 ]
Yang, Jeng-Gung [1 ]
Kuo, Chia-Ling [1 ]
机构
[1] Natl Chung Cheng Univ, Dept Elect Engn, Elegant Power Applicat Res Ctr, Min Hsiung 621, Taiwan
关键词
Flyback converter; isolated full-bridge bidirectional converter; soft start-up; POWER; VOLTAGE;
D O I
10.1109/TPEL.2010.2043542
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An isolated bidirectional full-bridge dc-dc converter with high conversion ratio, high output power, and soft start-up capability is proposed in this paper. The use of a capacitor, a diode, and a flyback converter can clamp the voltage spike caused by the current difference between the current-fed inductor and leakage inductance of the isolation transformer, and can reduce the current flowing through the active switches at the current-fed side. Operational principle of the proposed converter is first described, and then, the design equation is derived. A 1.5-kW prototype with low-side voltage of 48 V and high-side voltage of 360 V has been implemented, from which experimental results have verified its feasibility.
引用
收藏
页码:1915 / 1922
页数:8
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