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dc.contributor.authorMaheshwari, RamKrishan
dc.contributor.authorMunk-Nielsen, Stig
dc.contributor.authorBusquets Monge, Sergio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationMaheshwari, R.; Munk-Nielsen, S.; Busquets-Monge, S. Neutral-point current modeling and control for neutral-point clamped three-level converter drive with small DC-link capacitor. A: IEEE Energy Conversion Congress and Exposition. "3rd Annual IEEE Energy Conversion Congress & Exposition". Phoenix, AR: IEEE Press. Institute of Electrical and Electronics Engineers, 2011, p. 2087-2094.
dc.description.abstractA Neutral-Point-Clamped (NPC) three-level inverter with small DC-link capacitors is presented in this paper. This inverter requires zero average neutral-point current for stable neutral-point potential. A simple carrier based modulation strategy is proposed for achieving zero average neutral-point current. A new simplified model of the neutral-point voltage dynamics is derived for the proposed modulation strategy. This model shows that the neutral-point current is proportional to the power drawn from the converter and it enables the use of well established classical control theory for neutral-point voltage controller design. A PI controller is used for neutral-point voltage balance. The implementation of the proposed modulation strategy and controller is simple. It does not require any information about the output phase currents. The controller is implemented in a 7.5 kW induction machine based drive with only 14 μF DC-link capacitors. A fast and stable performance of the neutral-point voltage controller is achieved and verified by experiments.
dc.format.extent8 p.
dc.publisherIEEE Press. Institute of Electrical and Electronics Engineers
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
dc.subject.lcshPulse techniques (Electronics)
dc.subject.lcshSwitching circuits
dc.subject.lcshElectric current converters
dc.titleNeutral-point current modeling and control for neutral-point clamped three-level converter drive with small DC-link capacitor
dc.typeConference report
dc.subject.lemacCircuits de commutació
dc.subject.lemacConvertidors de corrent elèctric
dc.contributor.groupUniversitat Politècnica de Catalunya. GREP - Grup de Recerca en Electrònica de Potència
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
upcommons.citation.authorMaheshwari, R.; Munk-Nielsen, S.; Busquets-Monge, S.
upcommons.citation.contributorIEEE Energy Conversion Congress and Exposition
upcommons.citation.pubplacePhoenix, AR
upcommons.citation.publicationName3rd Annual IEEE Energy Conversion Congress & Exposition

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