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dc.contributor.authorLópez, Iraide
dc.contributor.authorCeballos Recio, Salvador
dc.contributor.authorPou Félix, Josep
dc.contributor.authorZaragoza Bertomeu, Jordi
dc.contributor.authorAndreu, Jon
dc.contributor.authorKortabarria, Iñigo
dc.contributor.authorAgelidis, Vassilios
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationLópez, I., Ceballos, S., Pou, J., Zaragoza, J., Andreu, J., Kortabarria, I., Agelidis, V. Modulation strategy for multiphase neutral-point-clamped converters. "IEEE transactions on power electronics", 01 Febrer 2015, vol. 31, núm. 2, p. 928-941.
dc.description.abstractThis paper presents a novel modulation strategy for n-phase neutral-point-clamped (NPC) converters. The proposed modulation strategy is able to control and completely remove the low-frequency neutral-point (NP) voltage oscillations for any operation point and load types. Even when unbalanced and/or nonlinear loads are considered, the NP voltage remains under total control. Consequently, the strategy is very attractive for n-phase active filters. In addition, it enables the use of low-capacity film capacitors in NPC converters. The proposed modulation takes the carrier-based modulation strategy as a basis. It is formulated following a generalized approach that makes it expandable to n-phase NPC converters. In addition, the NP voltage is controlled directly using a closed-loop algorithm that does not rely on the use of the linear control regulators or the additional compensators used in other modulation algorithms. Therefore, no tuning of parameters is required and it performs optimally for any operating conditions and kind of loads, including unbalanced and nonlinear loads. Although the high-frequency harmonic content of the output voltages may increase, the weighted total harmonic distortion generated by the proposed strategy is similar to that of a standard sinusoidal pulse width modulated strategy. The proposed modulation algorithm has been tested in a four-leg NPC converter prototype performing as a three-and four-phase system and operating with balanced and unbalanced loads.
dc.format.extent14 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
dc.subject.lcshElectric current converters
dc.subject.lcshPower electronics
dc.subject.otherCarrier-based modulation
dc.subject.othermultilevel multiphase converter
dc.subject.otherneutral-point-clamped (NPC) converter
dc.subject.otherpulse width modulated inverters
dc.subject.otherthree-level converter
dc.subject.othervoltage balance
dc.subject.othervoltage-source inverter
dc.subject.otherspace-vector PWM
dc.subject.othermultilevel converters
dc.titleModulation strategy for multiphase neutral-point-clamped converters
dc.subject.lemacConvertidors de corrent elèctric
dc.subject.lemacElectrònica de potència
dc.contributor.groupUniversitat Politècnica de Catalunya. TIEG-P - Terrassa Industrial Electronics Group -Power
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorLópez, I.; Ceballos, S.; Pou, J.; Zaragoza, J.; Andreu, J.; Kortabarria, I.; Agelidis, V.
upcommons.citation.publicationNameIEEE transactions on power electronics

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