Nonisolated Bidirectional Zero-Voltage-Switching DC–DC Converter

Author

Hyun-Lark Do

Author_Institution

Dept. of Electron. & Inf. Eng., Seoul Nat. Univ. of Sci. & Technol., Seoul, South Korea

Volume

26

Issue

9

fYear

2011

Firstpage

2563

Lastpage

2569

Abstract

A new nonisolated bidirectional zero-voltage-switching (ZVS) dc-dc converter is proposed. The proposed converter can operate with ZVS, fixed switching frequency, and a ripple-free inductor current regardless of the direction of power flow. To provide ZVS of the power switches and a ripple-free inductor current, the proposed converter utilizes a very simple auxiliary circuit that consists of an additional winding to the main inductor and an auxiliary inductor. Due to ZVS operation, the reverse recovery problem of the antiparallel body diode of the power switch does not occur. Moreover, the ripple-free inductor current can reduce the voltage ripple. Theoretical analysis of the proposed bidirectional dc-dc converter and the experimental results obtained on 100-W prototype are discussed.

Keywords

DC-DC power convertors; inductors; switching convertors; zero voltage switching; antiparallel body diode; fixed switching frequency; nonisolated bidirectional ZVS DC-DC converter; nonisolated bidirectional zero-voltage-switching DC-DC converter; power 100 W; power flow direction; power switches; ripple-free inductor current; voltage ripple reduction; Batteries; Capacitors; Converters; Inductors; Load flow; Switches; Zero voltage switching; Bidirectional dc–dc converter; dc–dc power conversion; zero-voltage-switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2011.2111387

Filename

5708181