A New DC/DC Converter With Wide-Range ZVS and Reduced Circulating Current

Author

Narimani, Mehdi ; Moschopoulos, Gerry

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada

Volume

28

Issue

3

fYear

2013

fDate

Mar-13

Firstpage

1265

Lastpage

1273

Abstract

A new three-level dc/dc converter is proposed in this paper. The outstanding features of this converter are that it operates with zero-voltage-switching (ZVS) from full-load to near no-load conditions with hardly any circulating freewheeling primary current due to its novel structure. Since the converter has little primary circulating current and its switches are exposed to only half of the input voltage, it has high efficiency even under light loads. In this paper, the new converter is introduced, its basic operating principles are explained, its modes of operation and its steady-state characteristics are discussed in detail as is its design, and experimental results obtained from a prototype converter that confirm its feasibility are presented.

Keywords

DC-DC power convertors; zero voltage switching; ZVS; full-load conditions; near no-load conditions; reduced circulating current; steady-state characteristics; three-level dc-dc converter; zero-voltage-switching; Capacitance; DC-DC power converters; Discharges; Inductors; Stress; Topology; Zero voltage switching; DC/DC power conversion; phase-shifted modulation (PSM) converters; switch-mode power supply; zero-voltage-switching (ZVS);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2012.2207404

Filename

6236199