Simple time domain analysis of natural balancing in flying capacitor stacked multiceli converters

Nursultan Ornov, Alex Ruderman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The paper presents simple closed-form analytical solutions for average natural voltage balancing dynamics in flying capacitor stacked multiceli converters. Unlike previously reported frequency domain solutions, this one is based on simple time domain averaging methodology. The suggested solution provides a comprehensive insight into natural balancing time constant, oscillation frequency, and overall balancing dynamics dependences on flying capacitances, converter load parameters, carrier frequency, and modulation index over the entire voltage modulation dynamic range. The power of time domain averaging methodology is demonstrated for a two stack converter in two-and three-cell versions.

Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1779-1785
Number of pages7
Volume40th Annual Conference of the IEEE Industrial Electronics Society, IECON 2014
ISBN (Electronic)9781479940325
DOIs
Publication statusPublished - Feb 24 2014

Keywords

  • Flying capacitor
  • Natural voltage balancing
  • Phase-shifted carrier based PWM
  • Stacked multicell converter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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