Seamless transition of the operating zones for the extended-Duty-Ratio boost converter

Jinia Roy, Raja Ayyanar

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

2 Scopus citations

Abstract

An extended-duty-ratio (EDR) boost is a unique combination of interleaved, multiphase boost converter and switched capacitor configuration that achieves a high converter gain without increased switching losses as most of the switches experience only fractions of the output voltage depending on the number of phases M. For an M-phase EDR converter with different combinations of the operating modes, M operating zones can be identified, with each zone having distinct converter gain and current sharing properties. Inherent current sharing is possible in only one operating zone ((M − 1)/M ≤ D ≤ 1), whereas, the duty ratio modification is required to ensure the same for other operating zones. This duty ratio adjustment is unique in each zone with varying phase shift of the carrier signal. The adjustment scheme also affects the converter gain, thus making the operating zone transition a complex assignment. A controller has been designed to detect the zone transition and ensuring a smooth transition of the operating zones for a 3-phase EDR boost converter. The proposed concept is validated with simulation and experimental results from a 250 W, 3-phase EDR boost, GaN-based hardware prototype.

Original languageEnglish (US)
Title of host publication2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4920-4926
Number of pages7
Volume2017-January
ISBN (Electronic)9781509029983
DOIs
StatePublished - Nov 3 2017
Event9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States
Duration: Oct 1 2017Oct 5 2017

Other

Other9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
CountryUnited States
CityCincinnati
Period10/1/1710/5/17

Keywords

  • Dynamic performance
  • Extended duty ratio converter
  • High voltage step up
  • Interleaved boost
  • Multi-phase converter
  • Sensor-less current sharing
  • Switched capacitor
  • Transient

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization

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    Roy, J., & Ayyanar, R. (2017). Seamless transition of the operating zones for the extended-Duty-Ratio boost converter. In 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 (Vol. 2017-January, pp. 4920-4926). [8096834] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2017.8096834