High gain soft-switching bidirectional DC-DC converters for eco-friendly vehicles

Author

Minho Kwon ; Junsung Park ; Sewan Choi

Author_Institution

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

fYear

2013

fDate

17-21 March 2013

Firstpage

1776

Lastpage

1782

Abstract

This paper proposes a non-isolated soft-switching bidirectional DC-DC converter suitable for high step-up and step-down applications. The proposed converter can achieve ZVS turn on of all switches and ZCS turn off of some switches in both CCM boost and buck operations. An optimized switching strategy is presented to minimize switch current rating and achieve soft-switching in wider range. An intermediate switching pattern is introduced to carry out seamless mode change. Experimental results from a 5kW prototype are provided to validate the proposed concept.

Keywords

DC-DC power convertors; electric vehicles; switchgear; switching convertors; zero current switching; zero voltage switching; CCM boost operation; CCM buck operation; ZCS; ZVS; ecofriendly vehicle; high gain soft-switching bidirectional DC-DC converter; nonisolated soft-switching bidirectional DC-DC converter; optimized switching strategy; power 5 kW; step-down application; step-up application; switch; switch current rating minimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE

Conference_Location

Long Beach, CA

ISSN

1048-2334

Print_ISBN

978-1-4673-4354-1

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2013.6520536

Filename

6520536