High-efficiency bidirectional DC-DC converter with coupled inductor

被引:91
作者
Duan, R. -Y. [1 ]
Lee, J. -D. [2 ]
机构
[1] Hungkuang Univ, Dept Safety Hlth & Environm Engn, Taichung 433, Taiwan
[2] Natl Formosa Univ, Dept Automat Engn, Huwei Township 632, Yunlin County, Taiwan
关键词
REVERSE-RECOVERY; FUEL-CELL; SYSTEM; RANGE;
D O I
10.1049/iet-pel.2010.0401
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
This study presents a novel soft-switching bidirectional dc-dc converter with a coupled inductor. Transformer-based circuit topologies are commonly employed in conventional bidirectional converters and soft-switching techniques, including zero-voltage switching (ZVS) or zero-current switching (ZCS), are frequently applied to mitigate switching losses. Unfortunately, the use of more than four switches and several diodes in these transformer-based schemes increase production costs and reduce conversion efficiency. This work presents a coupled-inductor bidirectional converter scheme that utilises four power switches to achieve the goal of bidirectional current control. The high step-up and step-down ratios enable a battery module current with a low-voltage level to be injected into a high-voltage dc bus for subsequent utilisation. Experimental results based on a 24 V/200 V 800 W prototype are provided to verify the effectiveness of the proposed bidirectional converter. Since the voltage clamping, synchronous rectification and soft-switching techniques are utilised in the proposed circuit topology and the corresponding device specifications are adequately fulfilled, the proposed converter can provide highly efficient bidirectional power conversion in a wide range on the low-voltage side.
引用
收藏
页码:115 / 123
页数:9
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