Simple time domain analysis of a 4-level H-bridge flying capacitor converter voltage balancing

Steven Thielemans, Alex Ruderman, Boris Reznikov, Jan Melkebeek

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

9 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. The balancing can be studied in the time domain, which results in easy to interpret expressions regarding parameter influence. Time domain analysis is normally done by time averaging of the system model over a PWM-period. In this paper a new method is presented starting from the "voltage unbalance" excessive energy which has to be dissipated in the converter load by switching harmonics in the load current. This is applied on a four-level H-bridge converter, which has dynamics of a high order and is normally hard to describe in the dime domain. The proposed method results in time domain parameters exactly describing the behaviour and the balancing of the capacitor voltages of the four-level H-bridge converter.

Original languageEnglish
Title of host publicationProceedings - ICIT 2010
Subtitle of host publicationIEEE-ICIT 2010 International Conference on Industrial Technology
Pages818-823
Number of pages6
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventIEEE-ICIT 2010 International Conference on Industrial Technology, ICIT 2010 - Vina del Mar, Chile
Duration: Mar 14 2010Mar 17 2010

Publication series

NameProceedings of the IEEE International Conference on Industrial Technology

Other

OtherIEEE-ICIT 2010 International Conference on Industrial Technology, ICIT 2010
CountryChile
CityVina del Mar
Period3/14/103/17/10

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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