A Hybrid Wide-Range Step-Up DC-DC Converter

Qiushuang Wei, Yu Fu, Yuzhe Wang, Shouxiang Li*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a hybrid wide-range step-up DC-DC converter consisting of Ladder switched-capacitor (SC) structure, an inductor, and a coupled inductor (CL). In contrast to the traditional Ladder switched-capacitor converter (SCC), the proposed hybrid converter exhibits an expansive voltage gain range and superior step-up gain, which is advantageous for photovoltaic applications. Moreover, the inherent current spike problem prevalent in the traditional Ladder SCC is tackled. The working principle, voltage gain, component stress, and boundary condition are analyzed comprehensively. Furthermore, a comparison with other converters proves the superiority of the proposed converter. To substantiate its performance and utility, a 200W prototype operating with the input range of 28V-91V and delivering an output of 400V was designed, constructed, and validated.

Original languageEnglish
Title of host publicationPEAS 2023 - 2023 IEEE 2nd International Power Electronics and Application Symposium, Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages19-23
Number of pages5
ISBN (Electronic)9798350313765
DOIs
Publication statusPublished - 2023
Event2nd IEEE International Power Electronics and Application Symposium, PEAS 2023 - Guangzhou, China
Duration: 10 Nov 202313 Nov 2023

Publication series

NamePEAS 2023 - 2023 IEEE 2nd International Power Electronics and Application Symposium, Conference Proceedings

Conference

Conference2nd IEEE International Power Electronics and Application Symposium, PEAS 2023
Country/TerritoryChina
CityGuangzhou
Period10/11/2313/11/23

Keywords

  • DC-DC converter
  • coupled inductor
  • switched-capacitor
  • wide gain range

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