Practical engineering approach to natural voltage balancing analysis in multilevel converters with balance booster

Radkhan Sarmukhanov, Yakov L. Familiant, Alex Ruderman

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

Abstract

The paper suggests simple engineering approach for evaluation of a natural balancing rate in multilevel voltage source capacitive converters with a balance booster. Balance booster is a series RLC-circuit with a resonance frequency tuned to match converter switching frequency. Natural voltage balancing dynamics in the presence of balance booster placed in parallel to a converter load is aperiodic (non-oscillatory) similar to that of the same converter working with a pure resistive load. The equivalent load resistance is slightly increased that of the booster (roughly by up to 20-25%; natural voltage balancing rate is slowed down in the same proportion). Some basic Flying Capacitor Converter topologies are considered and approximate balancing time constant formulas are derived and confirmed by computer simulations.

Original languageEnglish
Title of host publication2015 IEEE 5th International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2015 - Proceedings
PublisherIEEE Computer Society
Pages188-192
Number of pages5
ISBN (Electronic)9781479999781
DOIs
Publication statusPublished - Sep 14 2015
Event5th IEEE International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2015 - Riga, Latvia
Duration: May 11 2015May 13 2015

Publication series

NameInternational Conference on Power Engineering, Energy and Electrical Drives
Volume2015-September
ISSN (Print)2155-5516
ISSN (Electronic)2155-5532

Other

Other5th IEEE International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2015
CountryLatvia
CityRiga
Period5/11/155/13/15

Keywords

  • Balance booster
  • Multilevel converter
  • flying capacitor converter
  • natural balancing

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment

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