Discontinuous Modulation of a Cascaded H-Bridge Low-Capacitance StatCom

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dc.contributor.authorLiu, Qingxiang
dc.contributor.authorRodriguez, Ezequiel
dc.contributor.authorFarivar, Glen G.
dc.contributor.authorCeballos, Salvador
dc.contributor.authorTownsend, Christopher D.
dc.contributor.authorLeyva, Ramon
dc.contributor.authorPou, Josep
dc.contributor.institutionPOWER ELECTRONICS AND SYSTEM EQUIPMENT
dc.date.accessioned2024-07-24T12:09:18Z
dc.date.available2024-07-24T12:09:18Z
dc.date.issued2022-03-01
dc.descriptionPublisher Copyright: © 1986-2012 IEEE.
dc.description.abstractThis article presents a discontinuous modulation (DM) strategy for static compensators (StatComs) based on a cascaded H-bridge (CHB) converter with a star configuration. The proposed DM strategy considers the capacitor voltage oscillations at twice the fundamental frequency and the effect of zero-sequence voltage injection on the capacitor voltages. Considering these effects is especially important in CHB-StatComs with large capacitor voltage ripples (low-capacitance StatComs), where the assumption of a constant dc-link voltage, which is the basis of conventional DM strategies, does not apply. This article also describes a coherent set of steady-state waveforms for CHB-StatComs under DM. In addition to the well-known benefit of reducing the switching losses, the proposed DM also reduces the dc-link capacitors size and extends the operating range. The viability of the proposed DM strategy is verified experimentally on a small-scale prototype. In addition, simulation results are obtained using a real-scale system to study feasibility of the DM under unbalanced conditions.en
dc.description.sponsorshipThis work was supported by the Office of Naval Research Global under Grant N62909-19-1-2081.
dc.description.statusPeer reviewed
dc.format.extent11
dc.identifier.citationLiu , Q , Rodriguez , E , Farivar , G G , Ceballos , S , Townsend , C D , Leyva , R & Pou , J 2022 , ' Discontinuous Modulation of a Cascaded H-Bridge Low-Capacitance StatCom ' , IEEE Transactions on Power Electronics , vol. 37 , no. 3 , pp. 2790-2800 . https://doi.org/10.1109/TPEL.2021.3114976
dc.identifier.doi10.1109/TPEL.2021.3114976
dc.identifier.issn0885-8993
dc.identifier.urihttps://hdl.handle.net/11556/3960
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85115744250&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofIEEE Transactions on Power Electronics
dc.relation.projectIDOffice of Naval Research Global, ONRG, N62909-19-1-2081
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsCapacitance reduction
dc.subject.keywordscapacitor voltage ripples (CVRs)
dc.subject.keywordscascaded H-bridge (CHB)
dc.subject.keywordsdiscontinuous modulation (DM)
dc.subject.keywordsstatic compensator (StatCom)
dc.subject.keywordszero-sequence voltage
dc.subject.keywordsElectrical and Electronic Engineering
dc.titleDiscontinuous Modulation of a Cascaded H-Bridge Low-Capacitance StatComen
dc.typejournal article
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