A compact, soft-switching DC-DC converter for electric Propulsion

Robert Button, Jack Redilla, Raja Ayyanar, Ned Mohan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A hybrid, soft-switching, DC-DC converter has been developed with superior soft switching characteristics, high efficiency, and low electromagnetic 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 redesign of the transformer windings eliminated the deficiency. Future plans are presented that will improve the converter performance and shrink the packaging further.

Original languageEnglish (US)
Title of host publication1st International Energy Conversion Engineering Conference IECEC
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
StatePublished - 2003
Event1st International Energy Conversion Engineering Conference, IECEC 2003 - Portsmouth, VA, United States
Duration: Aug 17 2003Aug 21 2003


Other1st International Energy Conversion Engineering Conference, IECEC 2003
Country/TerritoryUnited States
CityPortsmouth, VA

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment


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