High-Conversion Ratio Multi-Phase VRM Realized with Generic Modular Series-Capacitor Boost Cells

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

1 Scopus citations

Abstract

This paper introduces a high-conversion ratio multi-phase non-isolated DC-DC topology built from generic series-capacitor boost cells. Using a stand-alone LC cell, the approach contributes to a high modularity of the resulting converters and enables high conversion ratios. The unique interaction between the capacitor and the inductor results in a soft-charging operation, which curbs the losses of the converter and contributes to higher efficiency. The method was used to create a multi-phase step-up DC-DC module for microinverters. The new converter significantly extends the effective duty ratio and lowers the voltage stress of the transistors. In addition, it has inherent current sharing to balance the load between the phases. Experimental results of a modular interleaved two-phase prototype demonstrate an excellent proof of design methodology concept and agree well with the simulations and theoretical analyses developed in this study.

Original languageEnglish
Title of host publication2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Electronic)9798350316186
DOIs
StatePublished - 1 Jan 2023
Event24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023 - Ann Arbor, United States
Duration: 25 Jun 202328 Jun 2023

Publication series

Name2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023

Conference

Conference24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023
Country/TerritoryUnited States
CityAnn Arbor
Period25/06/2328/06/23

Keywords

  • DC-DC power converters
  • high conversion ratio
  • microinverters
  • series-capacitor boost converter
  • voltage regulator module

ASJC Scopus subject areas

  • Computer Science Applications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization
  • Modeling and Simulation

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