Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Design of a 2kW Bidirectional Synchronous DC-DC Converter for Battery Energy Storage System
Authors Taeyeong Lee ; Byung-Geuk Cho ; Younghoon Cho ; Chanook Hong ; Han-Sol Lee ; Kwan-Yuhl Cho
Page pp.312-323
ISSN 1229-2214
Keywords BESS(Battery Energy Storage System) ; Bidirectional synchronous buck converter ; High efficiency ; Photovoltaic energy
Abstract This paper introduces the bidirectional dc-dc converter design case study, which employs silicon-carbide (SiC) MOSFETs for battery energy storage system (BESS). This converter topology is selected as bidirectional synchronous buck converter, which is composed of a half bridge converter, an inductor, and a capacitor, where the converter has less conduction loss than that of a unidirectional buck and boost converter, and to improve the converter efficiency, both the power stage design and power conversion architecture are described in detail. The conduction and switching losses are compared among three different SiC devices in this paper. In addition, the thermal analysis using Maxwell software of each switching device supports the loss analyses, in which both the 2 kW prototype analyses and experimental results show very good agreement.