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A Compact, Soft-Switching DC-DC Converter for Electric PropulsionA hybrid, soft-switching, DC-DC converter has been developed with superior soft switching characteristics, high efficiency, and low electro-magnetic interference. This hybrid topology is comprised of an uncontrolled bridge operating at full pulse-width, and a controlled section operating as a conventional phase modulated converter. The unique topology is able to maintain zero voltage switching down to no load operating conditions. A breadboard prototype was developed and tested to demonstrate the benefits of the topology. Improvements were then made to reduce the size of passive components and increase efficiency in preparation for packaging. A packaged prototype was then designed and built, and several innovative packaging techniques are presented. Performance test data is presented that reveals deficiencies in the design of the power transformer. A simple redesign of the transformer windings eliminated the deficiency. Future plans to improve the converter and packaging design are presented along with several conclusions.
Document ID
20030107802
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Button, Robert
(NASA Glenn Research Center Cleveland, OH, United States)
Redilla, Jack
(Core Technology Avon, OH, United States)
Ayyanar, Raja
(Arizona State Univ. Tempe, AZ, United States)
Date Acquired
August 21, 2013
Publication Date
June 13, 2003
Subject Category
Electronics And Electrical Engineering
Meeting Information
Meeting: International Energy Conversion Engineering Conference
Location: Portsmouth, VA
Country: United States
Start Date: August 17, 2003
End Date: August 21, 2003
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
OTHER: 22-755-60-15
Distribution Limits
Public
Copyright
Public Use Permitted.
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