Practical design considerations for a LLC multi-resonant DC-DC converter in battery charging applications

Author

Musavi, Fariborz ; Craciun, Marian ; Edington, Murray ; Eberle, Wilson ; Dunford, William G.

Author_Institution

Dept. of Res. Eng., Delta-Q Technol. Corp., Burnaby, BC, Canada

fYear

2012

fDate

5-9 Feb. 2012

Firstpage

2596

Lastpage

2602

Abstract

In this paper, resonant tank design procedure and practical design considerations are presented for a high performance LLC multi-resonant dc-dc converter in a two-stage smart battery charger for neighborhood electric vehicle applications. The multi-resonant converter has been analyzed and its performance characteristics are presented. It eliminates both low and high frequency current ripple on the battery, thus maximizing battery life without penalizing the volume of the charger. Simulation and experimental results are presented for a prototype unit converting 390 V from the input dc link to an output voltage range of 48 V to 72 V dc at 650 W. The prototype achieves a peak efficiency of 96%.

Keywords

DC-DC power convertors; battery chargers; electric vehicles; LLC multiresonant dc-dc converter; battery charging; neighborhood electric vehicle; power 650 W; resonant tank design procedure; two-stage smart battery charger; voltage 390 V; voltage 48 V to 72 V; Batteries; Capacitance; Capacitors; Inductors; MOSFET circuits; Resonant frequency; Switching frequency;

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.2012.6166189

Filename

6166189