New Phase Shift Modulated ZVS Full-Bridge DC/DC Converter with Minimized Auxiliary Current for Medium Power Fuel Cell Application

Author

Mason, Andrew J. ; Jain, Praveen K.

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont.

fYear

2005

fDate

16-16 June 2005

Firstpage

244

Lastpage

249

Abstract

This paper presents a new DC/DC converter topology for low input voltage, medium power applications such as a 7.75 kW residential solid oxide fuel cell (SOFC). The proposed converter uses adaptive energy storage to minimize auxiliary circulating currents and maximize efficiency. It also has a simple topology and low component count. Analysis and a design process are presented. The proposed topology and another widely-used ZVS-PSM-FB topology are simulated to compare conduction losses and converter efficiency. The proposed circuit is found to have 50-70% lower MOSFET conduction losses and 2-4% higher efficiency from full load to no load

Keywords

DC-DC power convertors; bridge circuits; energy storage; fuel cell power plants; phase shifters; power MOSFET; solid oxide fuel cells; zero voltage switching; MOSFET conduction losses; SOFC; ZVS full-bridge DC-DC converter topology; adaptive energy storage; auxiliary circulating current minimization; auxiliary current minimization; medium power fuel cell application; phase shift modulated; residential solid oxide fuel cell; Circuit topology; DC-DC power converters; Energy storage; Fuel cells; Low voltage; Medium voltage; Phase modulation; Process design; Solids; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1581631

Filename

1581631