Quadratic extended-duty-ratio boost converter for ultra high gain application with low device stress

Ankul Gupta, Nikhil Korada, Raja Ayyanar

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

Abstract

This paper proposes a new quadratic version of a non-isolated extended-duty-ratio (EDR) boost converter for ultra-high gain applications. The conventional EDR topology is a combination of an interleaved inductor and switched capacitor configuration which attains high gain with significantly lower switch voltage stress. Quadratic boost converters are typically used for high gain applications with lower component count. In this paper, we have proposed a Quadratic EDR (Q-EDR) boost converter which is capable to attain ultra high gain while retaining the advantages of EDR boost. Two configurations of the proposed Q-EDR topology are presented to achieve equal current sharing among all switches with low input current ripple. A comprehensive converter operation analysis with design considerations and loss breakdown is presented. The performance of the proposed topology is validated using a hardware prototype operating at 24 V-36 V to 600 V at 100 kHz, for a 1 kW 4-phase Q-EDR boost with both single input inductor and interleaved inductor configurations. Experimental results are presented with the converter able to achieve a conversion ratio of 25 times at moderate levels of operational duty and device voltage stress limited to 150 V for 600 V output condition.

Original languageEnglish (US)
Title of host publication2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1796-1802
Number of pages7
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

  • DC-DC converter
  • Extended duty ratio boost
  • Interleaved inductor
  • Low device stress
  • Quadratic boost
  • Switched capacitor configuration
  • Ultra high gain

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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