A critical evaluation of high power hard and soft switched isolated DC-DC converters

Author

Aydemir, Mehmet Timur ; Bendre, Ashish ; Venkataramanan, Giri

Author_Institution

Dept. of Electr. & Electron. Eng., Gazi Univ., Ankara, Turkey

Volume

2

fYear

2002

fDate

13-18 Oct. 2002

Firstpage

1338

Abstract

Realization of high power isolated DC-DC converters is largely dependent on managing converter parasitics and losses. In this paper, four different DC/DC converter topologies are compared in terms of their losses. The topologies include hard switched half bridge, switched snubber half bridge, zero voltage switching phase shifted full bridge and loss limited (semi soft switched) full bridge converters. These topologies have been designed to obtain 350 V 300 A DC output from a 650 V DC input at 20 kHz switching frequency. Design results and loss evaluations are presented.

Keywords

DC-DC power convertors; bridge circuits; losses; snubbers; switching circuits; 20 kHz; 300 A; 350 V; 650 V; converter losses management; converter parasitics management; half bridge converters; hard switched isolated DC-DC converters; high power converters; limited full bridge converters; soft switched isolated DC-DC converters; switched snubber half bridge converters; zero voltage switching phase shifted full bridge converters; Bridge circuits; Circuit topology; DC-DC power converters; Frequency conversion; Snubbers; Stress; Switching converters; Switching frequency; Switching loss; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the

Conference_Location

Pittsburgh, PA, USA

ISSN

0197-2618

Print_ISBN

0-7803-7420-7

Type

conf

DOI

10.1109/IAS.2002.1042731

Filename

1042731