Phase-Shifted Full-Bridge Series-Resonant DC-DC Converters for Wide Load Variations

被引：129
|
作者：
Lo, Yu-Kang [1 ]
Lin, Chung-Yi [1 ]
Hsieh, Min-Tsong [1 ]
Lin, Chien-Yu [1 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 10607, Taiwan
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2011年 / 58卷 / 06期
关键词：
Conversion efficiency; phase-shifted full-bridge converter; series resonant converter (SRC); DESIGN;
D O I：
10.1109/TIE.2010.2058076
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents the design of a phase-shifted full-bridge series resonant converter (PS-FB SRC). The proposed FB SRC features a novel two-mode operation. It is operated in series resonant mode at normal loads. The switching frequency is varied to regulate the output voltage. The fixed-frequency phase-shifted pulse width modulation, on the other hand, is used to adjust the effective duty cycle and regulate the output voltage at light loads. The proposed converter exhibits high conversion efficiency for wide-range load conditions. The relationships among the voltage gain, the switching frequency, and the effective duty cycle are discussed and analyzed. Finally, a 48-V/42-A prototype is implemented. Experiments are conducted to verify the theoretical analysis.
引用
收藏
页码：2572 / 2575
页数：4
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