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Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems

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dc.citedby4
dc.contributor.authorSochor P.en_US
dc.contributor.authorAkagi H.en_US
dc.contributor.authorTan N.M.L.en_US
dc.contributor.authorid56997455100en_US
dc.contributor.authorid7102912290en_US
dc.contributor.authorid24537965000en_US
dc.date.accessioned2023-05-29T06:37:35Z
dc.date.available2023-05-29T06:37:35Z
dc.date.issued2017
dc.descriptionBridge circuits; DC-DC converters; Energy conversion; HVDC power transmission; Photovoltaic cells; Renewable energy resources; Cascaded H-bridge inverters; Delta-configured; Low-voltage ride-through; Negative-sequence currents; Photovoltaic systems; Photovoltaics; Renewable energy source; Zero sequence current; Electric invertersen_US
dc.description.abstractThis paper presents theoretical and experimental discussions on low-voltage-ride-through (LVRT) operation of a modular multilevel single-delta bridge-cell (SDBC) inverter intended for utility-scale photovoltaic (PV) systems. As the penetration of distributed generation from renewable energy sources connected to medium- and high-voltage grids increases, grid-tied inverters progressively need to abide to stricter grid codes, which demand measures to maintain reliability of the grid. The latest grid codes require inverters in generation systems to provide dynamic grid support in the event of grid faults by injection of a reactive current. This paper discusses two unique solutions for an SDBC inverter to enable dynamic grid support. One method is to inject a zero-sequence current through feedforward control within the inverter, and the other is by utilizing power from the distributed dc-dc converters. No negative-sequence current is injected into the grid in both cases. This paper also highlights the issue of voltage-sag transformation through delta-wye transformers and its effect on the LVRT capability of the SDBC inverter. Experimental results on a three-phase 12.6-kVA system prove that the SDBC inverter is capable of seamlessly operating through symmetric and asymmetric voltage sags. � 2017 IEEE.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo8096826
dc.identifier.doi10.1109/ECCE.2017.8096826
dc.identifier.epage4872
dc.identifier.scopus2-s2.0-85041486505
dc.identifier.spage4865
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85041486505&doi=10.1109%2fECCE.2017.8096826&partnerID=40&md5=3b2cee35ee52da15a9b90be76c659d80
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/23051
dc.identifier.volume2017-January
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US
dc.sourceScopus
dc.sourcetitle2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
dc.titleLow-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systemsen_US
dc.typeConference Paperen_US
dspace.entity.typePublication
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