A high-efficiency bidirectional buck-boost DC-DC converter

Author

Stahl, Greg ; Rodriguez, Miguel ; Maksimovic, Dragan

Author_Institution

Colorado Power Electron. Center, Univ. of Colorado at Boulder, Boulder, CO, USA

fYear

2012

fDate

5-9 Feb. 2012

Firstpage

1362

Lastpage

1367

Abstract

This paper presents efficiency optimization and implementation of a bidirectional DC-DC converter based on the four-switch, non-inverting buck-boost configuration. The converter is intended for DC power systems to interface different sources or loads to a common DC bus, operating over a wide range of voltages. The number of converter phases, switching frequency, and inductor parameters are determined by an iterative efficiency optimization approach. The experimental 500W bidirectional converter operates from 12-38V at the source/load port to 21-32V at the bus port, with up to 97% efficiency.

Keywords

DC-DC power convertors; inductors; iterative methods; optimisation; power systems; switching convertors; DC power system; common DC bus port; converter phase; four-switch noninverting buck-boost configuration; high-efficiency bidirectional buck-boost DC-DC converter; inductor parameter; iterative efficiency optimization approach; power 500 W; source-load port; switching frequency; voltage 12 V to 38 V; Inductors; MOSFETs; Materials; Optimization; Switches; Switching frequency; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE

Conference_Location

Orlando, FL

Print_ISBN

978-1-4577-1215-9

Electronic_ISBN

978-1-4577-1214-2

Type

conf

DOI

10.1109/APEC.2012.6165997

Filename

6165997