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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.date.accessioned2016-07-14T11:39:37Z
dc.date.available2016-07-14T11:39:37Z
dc.date.issued2016-02
dc.identifier.citationIEEE Trans. Power. Delivery, vol. 31, no. 1, (2016), pp. 28- 36en
dc.identifier.issn0885-8977en
dc.identifier.urihttp://hdl.handle.net/11556/267
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.language.isoengen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USAen
dc.titleSwitching Frequency Analysis of Staircase-Modulated Modular Multilevel Converters and Equivalent PWM Techniquesen
dc.typearticleen
dc.identifier.doi10.1109/TPWRD.2015.2416759en
dc.isiYesen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsModular multilevel converter (MMC)en
dc.subject.keywordsMultilevel convertersen
dc.subject.keywordsPulsewidth modulation (PWM)en


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