An LLC Resonant DC–DC Converter for Wide Output Voltage Range Battery Charging Applications

Author

Musavi, Fariborz ; Craciun, Marian ; Gautam, Deepak S. ; Eberle, William ; Dunford, William G.

Author_Institution

Delta-Q Technol. Corp., Burnaby, BC, Canada

Volume

28

Issue

12

fYear

2013

fDate

Dec. 2013

Firstpage

5437

Lastpage

5445

Abstract

In this paper, resonant tank design procedure and practical design considerations are presented for a high performance LLC multiresonant dc-dc converter in a two-stage smart battery charger for neighborhood electric vehicle applications. The multiresonant 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 48-72 V dc at 650 W. The prototype achieves a peak efficiency of 96%.

Keywords

DC-DC power convertors; electric vehicles; secondary cells; LLC resonant DC-DC converter; electric vehicle; high performance LLC multiresonant dc-dc converter; high-frequency current ripple; low-frequency current ripple; multiresonant converter; power 650 W; practical design considerations; resonant tank design procedure; two-stage smart battery charger; voltage 390 V; voltage 48 V to 72 V; wide output voltage range battery charging; Batteries; Capacitance; Capacitors; Inductors; MOSFET circuits; Resonant frequency; Switching frequency; Batteries; dc–dc power converters; electric vehicles; resonant converters;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2013.2241792

Filename

6480890