A Variable Topology Multi-Resonant Soft-Switching DC-DC Converter with High Efficiency and Wide Gain

被引：0
|
作者：
Chen M. [1 ]
Wang Y. [1 ]
Chen Q. [2 ]
Yang L. [3 ]
Han F. [4 ]
机构：
[1] School of Electrical and Information Engineering, Tianjin University, Tianjin
[2] State Grid Jiangsu Electric Power Co. Ltd, Nanjing
[3] National Electric Power Dispatching and Control Center, State Grid Corporation of China, Beijing
[4] State Grid Nanjing Power Supply Company, Nanjing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 20期
关键词：
DC-DC converter; Loss analysis; Multi-resonant; Soft switching; Variable topology;
D O I：
10.19595/j.cnki.1000-6753.tces.L90293
中图分类号：
学科分类号：
摘要：
A variable topology multi-resonant soft-switching DC-DC converter is proposed in this paper. Applying the double transformer structure, this converter can transform the topological structure through two complementary turn-on auxiliary switches. There are three working modes, which can meet the requirements of high voltage gain or high efficiency under different working conditions. In addition, resonant parameters of the converter are designed by setting the resonant frequency and gain point reasonably. Subsequently, according to the condition that the converter transmits the fundamental and third harmonic energy simultaneously under rated conditions, a loss model considering both the fundamental wave and the third harmonic is constructed, and the loss distribution of the converter is estimated in detail. Finally, in order to verify the reliability of the theoretical analysis, this paper conducted a power experiment on the converter based on an experimental prototype. Within the input voltage range of 80~600V, the output voltage is always stable at 400V, and a wide voltage gain range is obtained. At the same time, high efficiency conversion within the full gain range is achieved, and the maximum efficiency of the converter is 97.6%. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
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收藏
页码：4225 / 4236
页数：11
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