Simple time domain analysis of a five-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

1 Citation (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 five-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 five-level H-bridge converter.

Original languageEnglish
Title of host publicationProceedings of EPE-PEMC 2010 - 14th International Power Electronics and Motion Control Conference
PagesT2139-T2146
DOIs
Publication statusPublished - Dec 27 2010
Externally publishedYes
Event14th International Power Electronics and Motion Control Conference, EPE-PEMC 2010 - Ohrid, Macedonia, The Former Yugoslav Republic of
Duration: Sep 6 2010Sep 8 2010

Publication series

NameProceedings of EPE-PEMC 2010 - 14th International Power Electronics and Motion Control Conference

Other

Other14th International Power Electronics and Motion Control Conference, EPE-PEMC 2010
CountryMacedonia, The Former Yugoslav Republic of
CityOhrid
Period9/6/109/8/10

Keywords

  • Multilevel converters
  • Pulse Width Modulation (PWM)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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