Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Design and Experiment of Three-phase Interleaved DC-DC Converter for 5㎾ Lead-Acid Battery Charger
Authors 李Wujong Lee ; Ju-Kyoung Eom ; Byung-Moon Han ; Hanju Cha
DOI 10.6113/TKPE/2011.16.3.227
Page pp.227-233
ISSN 1229-2214
Keywords Battery; Charger; three-phase Interleaved DC-DC converter; Bidirectional converter
Abstract This paper proposes a design and experiment of three phase interleaved dc-dc converter for 5kW battery charger. The charger consists of a three-phase interleaved dc-dc converter, which interfaces batteries and DC link, and a grid connected inverter. Lead-acid battery is modeled in a simple R-C model by matlab. Parameters of the battery are estimated based on step current discharging test. The battery is connected to three-phase interleaved DC-DC converter in order to reduce the ripple current to the battery and so, increase the lifetime of battery. Controller for charging and discharging mode is designed and tested in a 5kW charger prototype.