Inductor feedback ZVT based, low THD single phase full bridge inverter with hybrid modulation technique

Yinglai Xia, Raja Ayyanar

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

6 Scopus citations

Abstract

This paper proposes a topology based on zero-voltage-transition (ZVT) technique to realize zero-voltage-switching (ZVS) for all the main switches of the full bridge inverter, and inherent zero-current-switching (ZCS) for the auxiliary switches. The advantages of the strategy include the provision to implement zero state modulation schemes such as unipolar or hybrid PWM scheme in the full bridge inverters to decrease the inductor current THD, naturally adaptive auxiliary inductor current and elimination of need for large balancing capacitors. The modulation scheme and the commutation stages are analyzed in detail. The whole inverter including the auxiliary ZVT branch is modelled. Finally a 1 kW, 400 kHz switching frequency inverter of the proposed topology using SiC MOSFETs has been built to validate the theoretical analysis. The ZVT with hybrid modulation technique is implemented in DSP TMS320F28335 resulting in full ZVS for the main switches in the full bridge inverter. The proposed scheme can save up to 32 % of the switching loss compared with no ZVT case.

Original languageEnglish (US)
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3444-3450
Number of pages7
ISBN (Electronic)9781509053667
DOIs
StatePublished - May 17 2017
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: Mar 26 2017Mar 30 2017

Other

Other32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
CountryUnited States
CityTampa
Period3/26/173/30/17

Keywords

  • Full bridge inverters
  • Hybrid modulation
  • Switching loss saving
  • ZVT

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Xia, Y., & Ayyanar, R. (2017). Inductor feedback ZVT based, low THD single phase full bridge inverter with hybrid modulation technique. In 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017 (pp. 3444-3450). [7931191] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2017.7931191