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A Novel Isolated SEPIC Based Converter with High Voltage Gain and ZVS Characteristic

  • School of Electrical Engineering and Automation, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A high static gain SEPIC based dc-dc converter is proposed in this paper. With the inclusion of a transformer and the voltage multiplier, the circuit is capable of lower switch voltage stress and high output voltage application. The input current of the converter is continuous with low ripple and the system is designed to operate under discontinuous conducting mode for soft switching. In addition, the inductors in the circuit are also used as resonant components, with detailed parameter design, a resonant stage is introduced into the switching cycle, allowing the power MOSFETs to achieve zero voltage switching (ZVS), and as a result contribute to switching loss saving and the improvement of system efficiency. Finally, a 54W 500kHz 12V/180V isolated SEPIC based converter is built to verify the validity of analysis.

Original languageEnglish
Title of host publication2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728133980
DOIs
StatePublished - Aug 2019
Externally publishedYes
Event22nd International Conference on Electrical Machines and Systems, ICEMS 2019 - Harbin, China
Duration: 11 Aug 201914 Aug 2019

Publication series

Name2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019

Conference

Conference22nd International Conference on Electrical Machines and Systems, ICEMS 2019
Country/TerritoryChina
CityHarbin
Period11/08/1914/08/19

Keywords

  • SEPIC
  • high frequency
  • high step up
  • soft switching

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