A Zero-Voltage-Transition Bidirectional DC/DC Converter

被引：79
作者：
Dusmez, Serkan [1 ]
Khaligh, Alireza [2 ,3 ]
Hasanzadeh, Amin [1 ]
机构：
[1] Univ Maryland, Power Elect Energy Harvesting & Renewable Energie, Elect & Comp Engn Dept, College Pk, MD 20742 USA
[2] Univ Maryland, Power Elect Energy Harvesting & Renewable Energie, Syst Res Inst, College Pk, MD 20742 USA
[3] Univ Maryland, Elect & Comp Engn Dept, College Pk, MD 20742 USA
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2015年 / 62卷 / 05期
基金：
美国国家科学基金会;
关键词：
Bidirectional three-level (TL) converter; nonisolated dc/dc converter; power electronics; zero-voltage transition (ZVT) cell; DC-DC CONVERTER; FUEL-CELL; HIGH-POWER; DESIGN; ULTRACAPACITOR; BATTERY; RANGE;
D O I：
10.1109/TIE.2015.2404825
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A three-level (TL) bidirectional dc/dc converter is a suitable choice for power electronic systems with a high-voltage dc link, as the voltage stress on the switches is half and inductor current ripple frequency is twice the converter's switching frequency. This study proposes a zero-voltage transition (ZVT) TL dc/dc converter to enable operation with higher switching frequency in order to achieve higher power density and enhance efficiency. Two identical ZVT cells, each one composed of two resonant inductors, a capacitor, and an auxiliary switch, are integrated with the conventional TL topology to enable soft switching in all four switches in both buck and boost operation modes. In addition, a variable dead-time control is proposed to increase the effective duty ratio at heavy loads. The proposed soft-switching feature has been demonstrated under different loading conditions. A 650-W prototype is designed and fabricated, which exhibits 95.5% at full load.
引用
收藏
页码：3152 / 3162
页数：11
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