Five-level H-bridge flying capacitor converter voltage balance dynamics analysis

S. Thielemans, A. Ruderman, B. Reznikov, J. A.A. Melkebeek

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

20 Citations (Scopus)

Abstract

Flying Capacitor (FC) multilevel Pulse Width Modulated (PWM) converters are an attractive choice due to the natural balancing property of the capacitor voltages. A single-leg flying capacitor converter voltage balance dynamics analytical solution may be obtained using switched systems time domain approach based on stitching of switching intervals piece-wise analytical solutions in combination, for inductance dominated load, with a small parameter technique. In this paper, a symmetric five-level H-bridge flying capacitor converter common mode voltage balance dynamics solution is obtained from its single-leg prototype using "mirror hypothesis" formalism. Simple analytical expressions clearly reveal the dependences on load parameters, carrier frequency, and DC PWM normalized voltage command. For AC modulation, the solution obtained by averaging on a fundamental AC period does not depend on a fundamental frequency. The results of the theoretical analysis are confirmed by extensive switched simulations.

Original languageEnglish
Title of host publicationISIE 2010 - 2010 IEEE International Symposium on Industrial Electronics
Pages826-831
Number of pages6
DOIs
Publication statusPublished - Dec 27 2010
Event2010 IEEE International Symposium on Industrial Electronics, ISIE 2010 - Bari, Italy
Duration: Jul 4 2010Jul 7 2010

Publication series

NameIEEE International Symposium on Industrial Electronics

Other

Other2010 IEEE International Symposium on Industrial Electronics, ISIE 2010
CountryItaly
CityBari
Period7/4/107/7/10

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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