A highly reliable and efficient differential type buck-boost DC-AC converter

Fazal Akbar, Honnyong Cha, Ashraf Ali Khan, Heung Geun Kim

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

2 Scopus citations

Abstract

The conventional structure of buck-boost inverter uses IGBTs. IGBTs have features like long tail current, fixed voltage drop and that is why its switching losses are high. In this paper switching cells structured buck-boost inverter is proposed. In switching cell structure, MOSFETs and external diodes with very fast reverse recovery characteristics are used, while the body diodes have no chance of conducting current. As a result, switching and conduction losses are reduced and diode performance is improved. It has an additional advantage of having no shoot-through problem which increases its reliability. In order to further increase the efficiency, a modified switching scheme is also proposed. In the proposed switching scheme power MOSFETs of each individual buck-boost converter operate in high frequency for only half cycle. Due to which switching and conduction losses are greatly reduced resulting in further improving the efficiency.

Original languageEnglish
Title of host publication2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1791-1796
Number of pages6
ISBN (Electronic)9781509051571
DOIs
StatePublished - 25 Jul 2017
Event3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 - Kaohsiung, Taiwan, Province of China
Duration: 3 Jun 20177 Jun 2017

Publication series

Name2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017

Conference

Conference3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period3/06/177/06/17

Keywords

  • buck-boost inverter
  • IGBT
  • MOSFET
  • switching and conduction losses
  • switching cell

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