Topology and application of bidirectional isolated dc-dc converters

Author

Tan, Nadia M L ; Abe, Takahiro ; Akagi, Hirofumi

Author_Institution

Univ. Tenaga Nasional, Selangor, Malaysia

fYear

2011

fDate

May 30 2011-June 3 2011

Firstpage

1039

Lastpage

1046

Abstract

A bidirectional isolated dc-dc converter manages the power flow between an energy storage device and a dc bus with functions of galvanic isolation and voltage matching. Research and development of these converters focus on improving efficiency and power density. This paper presents and compares various configurations of bidirectional isolated dc-dc converters. It also illustrates the performance of a 6-kW, full-bridge, bidirectional isolated dc-dc converter operating at 4 kHz, which is suitable for output power leveling of photovoltaic generation systems connected to homes and office buildings. The maximum efficiency of the dc-dc converter is measured at 98.1% during battery charging and at 98.2% during battery discharging. The converter maintains a high efficiency of more than 97% for a wide range of power transfer.

Keywords

DC-DC power convertors; bridge circuits; energy storage; load flow; photovoltaic power systems; battery discharging; bidirectional isolated DC-DC converters; energy storage device; frequency 4 kHz; full-bridge converter; galvanic isolation; office buildings; photovoltaic generation systems; power 6 kW; power flow; voltage matching; Batteries; Capacitors; Circuit faults; Inductors; Snubbers; Topology; Bidirectional isolated dc-dc converters; efficiency; energy storage systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Conference_Location

Jeju

ISSN

2150-6078

Print_ISBN

978-1-61284-958-4

Electronic_ISBN

2150-6078

Type

conf

DOI

10.1109/ICPE.2011.5944690

Filename

5944690