Voltage balancing method using phase-shifted PWM for stacked multicell converters

Amer M. Y. M. Ghias, Josep Pou, Vassilios G. Agelidis, Mihai Ciobotaru

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

5 Citations (Scopus)

Abstract

This paper proposes an active voltage balancing method for stacked multicell converters (SMC) using phase-shifted pulse-width modulation, which is easy to implement and extend to high number of levels. The proposed method balances the voltages of the capacitors by modifying the duty cycle of each switch of the SMC using a proportional controller. The crossed effect between capacitor currents and duty cycles is considered and is used for optimal capacitor voltage balance. The performance of the proposed voltage balancing method is verified by simulation for different operating conditions, such as unbalanced linear loads, non-linear loads and load transients.
Original languageEnglish
Title of host publicationProceedings IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages6334-6339
Number of pages6
ISBN (Electronic)9781479902248
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 - Vienna, Austria
Duration: 10 Nov 201314 Nov 2013

Conference

Conference39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
CountryAustria
CityVienna
Period10/11/1314/11/13

Keywords

  • Capacitor voltage balancing
  • Multilevel converter
  • Pulse-width modulation
  • Stacked multicell converter

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