Passive regenerative snubber cell applied to isolated DCM SEPIC converter

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Abstract

Isolated converter such as SEPIC has a high voltage stress in the main switch due to transformer leakage inductance. To solve this issue an active or passive clamp action is necessary. The common passive solution based on a RCD snubber is simple but impractical when the value of the leakage inductance is significant. In other hands, passive regenerative solutions generally compromise the isolation, making the search for a suitable snubber a challenge. In this paper, an effective passive regenerative snubber cell for isolated DCM SEPIC converters is presented. It is intended to improve the converter efficiency by transferring the energy stored in the transformer leakage inductance to the output. Analysis is presented in detail together with a practical design procedure. To validate the proposal, simulated and experimental results are performed for a 100 W, 100 V input and 50 V output voltage converter.
Original languageEnglish
Title of host publicationProceedings of the 8th International Power Electronics and Motion Control Conference (IPEMC 2016-ECCE Asia), May 22-25, 2016, Hefei, China
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages2779-2786
Number of pages8
ISBN (Print)978-1-5090-1210-7
DOIs
Publication statusPublished - May 2016
Event8th International Power Electronics and Motion Control Conferenc (IPEMC 2016) - Platinum Hanjue Hotel, Hefei, China
Duration: 22 May 201625 May 2016
Conference number: 8
http://www.ipemc2016.org/

Conference

Conference8th International Power Electronics and Motion Control Conferenc (IPEMC 2016)
Abbreviated titleIPEMC 2016-ECCE Asia
Country/TerritoryChina
CityHefei
Period22/05/1625/05/16
Internet address

Keywords

  • Regenerative snubber
  • SEPIC converter

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