Implementation of a current-fed high step-up DC-DC converter

H. T. Yang, J. T. Liao, J. Y. Lee

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

Abstract

Based on SEPIC converter and cascade topology, a current-fed high step-up DC-DC converter is presented in this paper. The input inductor of the proposed converter is operated in continuous conduction mode (CCM), which has lower pulsating input current and thus reduced current ripple. A coupled inductor in the proposed circuit is employed to achieve higher voltage conversion ratio and avoid operation at extreme duty ratio via a proper turn ratio. The leakage inductance of the coupled inductor is designed to be recycled to output load. The voltage spike on the main switch can be clamped. Therefore, low power-rating and low on-resistance can be adopted to decrease both switching and conduction losses. Moreover, synchronous rectifier (SR) is applied at the front-end of the proposed converter to further decrease conduction losses. Feasibility and effectiveness of the proposed circuit are verified via computer simulations and practical experiments.

Original languageEnglish
Title of host publication2011 IEEE PES Trondheim PowerTech
Subtitle of host publicationThe Power of Technology for a Sustainable Society, POWERTECH 2011
DOIs
Publication statusPublished - 2011
Event2011 IEEE PES Trondheim PowerTech: The Power of Technology for a Sustainable Society, POWERTECH 2011 - Trondheim, Norway
Duration: 2011 Jun 192011 Jun 23

Publication series

Name2011 IEEE PES Trondheim PowerTech: The Power of Technology for a Sustainable Society, POWERTECH 2011

Other

Other2011 IEEE PES Trondheim PowerTech: The Power of Technology for a Sustainable Society, POWERTECH 2011
CountryNorway
CityTrondheim
Period11-06-1911-06-23

All Science Journal Classification (ASJC) codes

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

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