Non-Isolated High Conversion Ratio Boost Extender Based on Back-end Series Capacitor Stacking

Vikas Kumar Rathore, Michael Evzelman, Mor Mordechai Peretz

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

Abstract

A non-isolated high conversion ratio boost extending method is presented. The extender approach hinges on the stacking of series capacitors, to achieve high voltage gain, along with high efficiency. The series capacitor stacking method, facilitates a high efficiency single cycle energy conversion that eliminates the need in multiple consecutive conversions typical for high gain non-isolated converters. In addition, the topology and stacking approach features low voltage stress across the diodes and stacked capacitors. An analysis of the voltage gain and component stresses for the general case is carried out, and experimental prototype of 125W is developed and built in the laboratory. The converter attains maximum efficiency of 95.5% at input voltage of 20V and output voltage of 210V. The experimental results are in a good agreement with theoretical predictions.

Original languageEnglish
Title of host publication2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665410816
DOIs
StatePublished - 1 Jan 2022
Event23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 - Tel-Aviv, Israel
Duration: 20 Jun 202223 Jun 2022

Publication series

NameProceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL
Volume2022-June
ISSN (Print)1093-5142

Conference

Conference23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022
Country/TerritoryIsrael
CityTel-Aviv
Period20/06/2223/06/22

Keywords

  • Boost extender
  • Capacitor stacking
  • High voltage gain
  • Single-switch
  • Switched capacitor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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