Title :
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
fDate :
May 30 2011-June 3 2011
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;
Conference_Titel :
Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on
Conference_Location :
Jeju
Print_ISBN :
978-1-61284-958-4
Electronic_ISBN :
2150-6078
DOI :
10.1109/ICPE.2011.5944690
