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A Capacitor-Isolated Equalization Topology Operates in DCM for Series-Connected Cells

  • Zheng Cao
  • , Shaocong Wang
  • , Ruihong Zhang
  • , Jian Guan
  • , E. Peng
  • School of Electrical Engineering and Automation, Harbin Institute of Technology
  • City University of Hong Kong
  • BYD Company Ltd.
  • School of Energy Science and Engineering, Harbin Institute of Technology

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

Abstract

A capacitor-isolated equalization topology operating in discontinuous conduction mode (DCM) for series-connected cells to equalize the cell voltage automatically is proposed in this paper. Feedback control is not required to limit currents flowing through cells and circuit components. The operation principle is analyzed and an experimental prototype for four series-connected cells is built to validate the equalization performance of the proposed topology.

Original languageEnglish
Title of host publication2025 IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331541309
DOIs
StatePublished - 2025
Externally publishedYes
Event17th Annual IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025 - Philadelphia, United States
Duration: 19 Oct 202523 Oct 2025

Publication series

Name2025 IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025

Conference

Conference17th Annual IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025
Country/TerritoryUnited States
CityPhiladelphia
Period19/10/2523/10/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • DCM
  • Voltage equalization
  • cell balance
  • isolation capacitors

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