Duty phase shift technique for extended-duty-ratio boost converter for reducing device voltage stress over wider operating range

Jinia Roy, Raja Ayyanar

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

3 Scopus citations

Abstract

This paper proposes a modified duty phase shift technique for an M-phase extended-duty-ratio (EDR) boost converter to facilitate the inherent current sharing property and reduced voltage stress on the switching devices of the EDR converter over wider operating region. With conventional phase shift of (360/M)° among the operating phases, a reduced voltage stress and inherent current share between the interleaved boost phases is only possible for the operating region of duty ratio given by (M - 1)/M ≤ D ≤ 1, with a minimum gain of M2. However, for a wide range of input-output application with the need of extended range of voltage conversion gain, the converter will operate over broader duty ratio range. With the proposed duty phase shift technique, the advantages of EDR converter of inherent current sharing and reduced voltage stress on the active devices can be restored over wider operating range allowing a minimum gain of 2 M. The method is validated with extensive simulation results from multi-phase EDR boost and experimental results from a 250 W 3-phase EDR boost with GaN-based hardware prototype operating at 200 kHz switching frequency.

Original languageEnglish (US)
Title of host publicationAPEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2203-2208
Number of pages6
Volume2018-March
ISBN (Electronic)9781538611807
DOIs
StatePublished - Apr 18 2018
Event33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 - San Antonio, United States
Duration: Mar 4 2018Mar 8 2018

Other

Other33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
CountryUnited States
CitySan Antonio
Period3/4/183/8/18

Keywords

  • Extended duty ratio converter
  • High voltage step up
  • Interleaved boost
  • Multi-phase converter
  • Reduced voltage stress
  • Switched capacitor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Roy, J., & Ayyanar, R. (2018). Duty phase shift technique for extended-duty-ratio boost converter for reducing device voltage stress over wider operating range. In APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition (Vol. 2018-March, pp. 2203-2208). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2018.8341322