Novel soft-switching bidirectional DC-DC converter based on LLC resonance

被引：0

作者：

Yi L. ^{[1
]}

Li Q. ^{[1
]}

Hu Y. ^{[2
]}

Long X. ^{[3
]}

机构：

[1] Hunan Province Engineering Research Center for Multi-energy Collaborative Control Technology, Xiangtan University, Xiangtan

[2] Shenzhen MOSO Electric Co., Ltd., Shenzhen

[3] XEMC Wind Power Co., Ltd., Xiangtan

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Bidirectional DC-DC converter; Double-pressure half bridge; Household energy storage; LLC resonance; Push-pull half bridge; Soft switch;

D O I：

10.16081/j.epae.201911031

中图分类号：

学科分类号：

摘要：

In order to further improve the power density and efficiency of the battery-side bidirectional DC-DC converter in the household energy storage system, a novel soft-switching bidirectional DC-DC converter based on LLC resonance is proposed. The converter effectively reduces the transformer turns ratio and improves the conversion efficiency. The converter can realize the bidirectional LLC characteristic in the asymmetric half-bridge topology, and all the switches in the converter can realize soft switching. At the same time, the converter has a simple structure and can apply synchronous rectification technology, thereby ha-ving the advantages of high efficiency and low cost. The realization process of the soft switch of the conver-ter is described, and then the resonance characteristics, the related parameters and the realization conditions of the soft switch are analyzed. Finally, a 500 V•A experimental prototype with a high voltage side of 350~400 V and a low voltage side of 45~50 V is fabricated, which verifies the effectiveness and practicability of the proposed converter. © 2019, Electric Power Automation Equipment Press. All right reserved.

引用

页码：21 / 27

页数：6

共 20 条

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