Self-oscillation flyback converter with lossless snubber for contactless power supply application

Ray Lee Lin, Zhi Yu Huang

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

1 Citation (Scopus)

Abstract

This paper presents the self-oscillating flyback converter with an integrated flyback-transformer whose auxiliary winding is utilized as the lossless snubber inductor and output-voltage sensing winding. In the conventional flyback converter, the turn-off switching loss caused by high switching frequency leads to low conversion efficiency. The proposed lossless snubber scheme not only reduces the voltage spikes at turn-off interval, but also recycles the energy stored in the leakage inductor to the input source for improving conversion efficiency. Considering further simplification, the lossless snubber inductor and the output-voltage sensing winding can be combined together as a single winding. A prototype circuit of the 15W self-oscillating flyback converter with lossless snubber circuit and output-voltage sensing circuit is built to verify the performances, such as the voltage stress on the switch, the conversion efficiency, and the load regulation.

Original languageEnglish
Title of host publication2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
Pages549-554
Number of pages6
DOIs
Publication statusPublished - 2010 Dec 20
Event2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, GA, United States
Duration: 2010 Sep 122010 Sep 16

Publication series

Name2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

Other

Other2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
CountryUnited States
CityAtlanta, GA
Period10-09-1210-09-16

All Science Journal Classification (ASJC) codes

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

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