Phase-shedding control scheme for wide voltage range operation of extended-duty-ratio boost converter

Ankul Gupta, Raja Ayyanar, Sombuddha Chakraborty

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

Abstract

In this paper, a phase shedding control scheme for extended-duty-ratio (EDR) boost converter is proposed to achieve wide input and output voltage range operation of the converter. EDR converters can achieve very high gain, for example above 20 for a 4-phase converter, but have limitations on the lowest allowable gain. The proposed scheme allows operation at gain as low as unity while retaining the main benefits of EDR boost such as low voltage stress across switches. The phase shedding control can be optimized based on the application requirements. In this paper, the phase shedding control is optimized for low device voltage stress over wide input and output voltage range operation. The converter control implementation is discussed in detail. The control scheme is verified with a 4-phase EDR boost converter with input voltage varying between 20 V-40 V and output voltage ranging between 50 V-400 V. Experimental results of closed loop operation with adaptive PI controller are presented and the phase shedding scheme is verified by showing the transition from one configuration to another based on the converters varying gain.

Original languageEnglish (US)
Title of host publication2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages494-499
Number of pages6
ISBN (Electronic)9781728189499
DOIs
StatePublished - Jun 14 2021
Event36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021 - Virtual, Online, United States
Duration: Jun 14 2021Jun 17 2021

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021
Country/TerritoryUnited States
CityVirtual, Online
Period6/14/216/17/21

Keywords

  • EDR boost
  • Extended gain range
  • High-voltage gain
  • Interleaved boost
  • Phase shedding
  • Wide range of voltage gain

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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