Switching Frequency Analysis of Staircase-Modulated Modular Multilevel Converters and Equivalent PWM Techniques

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dc.contributor.authorKonstantinou, G.
dc.contributor.authorPou, J.
dc.contributor.authorCeballos, Salvador
dc.contributor.authorDarus, R.
dc.contributor.authorAgelidis, V.G.
dc.contributor.institutionPOWER ELECTRONICS AND SYSTEM EQUIPMENT
dc.date.issued2016-02
dc.descriptionPublisher Copyright: © 1986-2012 IEEE.
dc.description.abstractThe large number of voltage levels in a modular multilevel converter (MMC) make staircase modulation a feasible alternative, particularly in high-power applications. However, staircase waveforms do not necessarily mean operation of the MMC submodules (SMs) at the fundamental frequency. This paper presents an analysis of SM switching frequencies in staircase-modulated MMCs and their correlation to the modulation index and load phase angle. A carrier-based pulsewidth-modulation (CB-PWM) equivalent technique is also developed. This analysis demonstrates that CB-PWM techniques provide a similar switching frequency with superior harmonic performance and improved voltage balancing characteristics at all modulation indices compared to staircase modulation. The theoretical analysis is verified with extensive simulation results for MMCs with different SMs and experimental results from a laboratory prototype.en
dc.description.statusPeer reviewed
dc.format.extent9
dc.format.extent2070313
dc.identifier.citationKonstantinou , G , Pou , J , Ceballos , S , Darus , R & Agelidis , V G 2016 , ' Switching Frequency Analysis of Staircase-Modulated Modular Multilevel Converters and Equivalent PWM Techniques ' , unknown , vol. unknown , no. 1 , 7070753 , pp. 28-36 . https://doi.org/10.1109/TPWRD.2015.2416759
dc.identifier.doi10.1109/TPWRD.2015.2416759
dc.identifier.otherresearchoutputwizard: 11556/267
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84962424940&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofunknown
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsModular multilevel converter (MMC)
dc.subject.keywordsMultilevel converters
dc.subject.keywordsPulsewidth modulation (PWM)
dc.subject.keywordsModular multilevel converter (MMC)
dc.subject.keywordsMultilevel converters
dc.subject.keywordsPulsewidth modulation (PWM)
dc.subject.keywordsEnergy Engineering and Power Technology
dc.subject.keywordsElectrical and Electronic Engineering
dc.titleSwitching Frequency Analysis of Staircase-Modulated Modular Multilevel Converters and Equivalent PWM Techniquesen
dc.typejournal article
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