A New Synchronous Rectification for Phase Shift Modulation LLC Resonant Converter

被引：0
|
作者：
Murata, Koji [1 ]
Kurokawa, Fujio [2 ]
机构：
[1] Nagasaki Univ, Dept Elect & Elect Engn, Nagasaki 8528137, Japan
[2] Nagasaki Univ, Fac Engn, Dept Elect & Elect Engn, Nagasaki 8528137, Japan
来源：
INTERNATIONAL JOURNAL OF RENEWABLE ENERGY RESEARCH | 2015年 / 5卷 / 04期
关键词：
LLC resonant converter; phase shift modulation; synchronous rectification; full-bridge; predict;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper presents a new synchronous rectification (SR) for phase shift modulation (PSM) LLC resonant converters. The SR for PSM LLC resonant converter has difficulty because the secondary current is not in phase with both primary current and the voltage across the transformer. Furthermore, the open-loop SR for phase shift modulation does not perform well because the optimum pulse width is highly dependent on operating conditions such as the duty ratio of primary switches and the load current condition. The proposed SR utilizes the average load current to predict the optimum pulse width of SR so that the detection circuit for SR is not required. Effectiveness of the proposed SR is simulated and experimentally verified.
引用
收藏
页码：1206 / 1211
页数：6
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