Modeling and Analysis of Series-Parallel Switched-Capacitor Voltage Equalizer for Battery/Supercapacitor Strings

Yuanmao Ye, Ka Wai Eric Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

94 Citations (Scopus)


A series-parallel switched-capacitor (SC) power converter is reconfigured as a new voltage equalization circuitry for series-connected batteries or supercapacitors in this paper. The model of the new voltage equalizer is derived and successfully used to analyze the equalization speed and the energy loss. It is a very useful tool to analyze and design the SC-based equalization systems to meet different balancing speed requirements. The analysis and modeling methods can be extended to other SC-based voltage-balancing systems. A prototype is built and the experimental results are provided to confirm the theoretical analysis and the modeling method.
Original languageEnglish
Article number7076594
Pages (from-to)977-983
Number of pages7
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Issue number4
Publication statusPublished - 1 Jan 2015


  • Battery-management system
  • model
  • switched-capacitor (SC)
  • voltage equalization

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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