Design and implementation of a bidirectional flyback boost/buck integrated converter

Hui Wen Rebecca Liang, Jiann Fuh Chen, Chun Hean Lim

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

2 Citations (Scopus)

Abstract

A bidirectional flyback boost/buck integrated converter with high conversion ratio is designed and implemented in this paper. When batteries release energy to DC bus, this converter functions like flyback and boost integrated converter, with outputs of flyback and boost converter cascoded to obtain high voltage gain. Energy in leakage inductor is recycled through boost converter, neglecting the need of snubber circuits. When batteries are charged by DC bus, this converter functions like flyback and buck converter working in parallel. Two of the switches are turned on with valley voltage switching, enhancing conversion efficiency. This converter has simple structure and low component counts. Operating principles, steady-state analysis, and component parameter designs are presented. Hardware prototype with four 12 V lead-acid batteries in series and DC bus of 400 V is implemented. Maximum power is 500 W under step-up mode and battery charging current is 2.2 A under step-down mode.

Original languageEnglish
Title of host publication2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509015467
DOIs
Publication statusPublished - 2016 Jan 1
Event2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016 - Auckland, New Zealand
Duration: 2016 Dec 52016 Dec 8

Publication series

Name2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016

Other

Other2nd IEEE Annual Southern Power Electronics Conference, SPEC 2016
CountryNew Zealand
CityAuckland
Period16-12-0516-12-08

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Liang, H. W. R., Chen, J. F., & Lim, C. H. (2016). Design and implementation of a bidirectional flyback boost/buck integrated converter. In 2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016 [7846002] (2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPEC.2016.7846002