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A new backward Euler stabilized optimum controller for NPC back-to-back five level converters

2017-06Journal article Restricted access
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dc.contributor.authorChaves, Miguel
dc.contributor.authorSilva, Fernando José
dc.contributor.authorPinho, Ferreira Sónia
dc.contributor.authorMargato, Elmano
dc.contributor.authorSantana, João
dc.date.accessioned2017-09-18T10:09:36Z
dc.date.available2017-09-18T10:09:36Z
dc.date.issued2017-06
dc.description.abstractThis paper presents a backward Euler stabilized-based control strategy applied to a neutral point clamped (NPC) back-to-back connected five level converters. A generalized method is used to obtain the back-to-back NPC converter system model. The backward Euler stabilized-based control strategy uses one set of calculations to compute the optimum voltage vector needed to reach the references and to balance the voltage of the DC-bus capacitors. The output voltage vector is selected using a modified cost functional that includes variable tracking errors in the functional weights, whereas in classic approaches, the weights are considered constant. The proposed modified cost functional enables AC current tracking and DC-bus voltage balancing in a wide range of operating conditions. The paper main contributions are: (i) a backward Euler stabilized-based control strategy applied to a double, back-to-back connected, five level NPC converter; (ii) the use of cost functional weight varying as a function of the controlled variable tracking errors to enforce the controlled variables and to balance the DC capacitor voltages; and (iii) the demonstration of system feasibility for this type of converter topology and control strategy, ensuring a high enough computational efficiency and extending the modulation index from 0.6 to 0.93. Experimental results are presented using a prototype of a five level NPC back-to-back converter.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCHAVES, Miguel [et al] - A new backward euler stabilized optimum controller for NPC back-to-back five level converters. Energies. ISSN 1996-1073. Vol. 10, N.º 6 (2017), pp. 1-16pt_PT
dc.identifier.doi10.3390/en10060735pt_PT
dc.identifier.issn1996-1073
dc.identifier.urihttp://hdl.handle.net/10400.21/7371
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relation.publisherversionfile:///C:/Users/utilizador2/Downloads/energies-10-00735.pdfpt_PT
dc.subjectMultilevel converterspt_PT
dc.subjectBack-to-back converterspt_PT
dc.subjectBackward Euler based controlpt_PT
dc.subjectCapacitors voltage balancingpt_PT
dc.titleA new backward Euler stabilized optimum controller for NPC back-to-back five level converterspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage16pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEnergiespt_PT
oaire.citation.volume10pt_PT
person.familyNameChaves
person.familyNameMargato
person.givenNameMiguel
person.givenNameElmano
person.identifier.ciencia-id2F12-3295-B091
person.identifier.orcid0000-0003-2377-6680
person.identifier.orcid0000-0002-8601-9145
person.identifier.ridA-4532-2014
person.identifier.scopus-author-id26530942300
person.identifier.scopus-author-id6505972972
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationaf867b60-1a8f-4e3a-9cba-01468311303e
relation.isAuthorOfPublication9f983bef-f0ef-4660-b6e9-e9beebaf6acc
relation.isAuthorOfPublication.latestForDiscoveryaf867b60-1a8f-4e3a-9cba-01468311303e

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