Title :
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
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;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042731
