Natural balancing of three-phase 2-cell and 3-cell multicell converters

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dc.contributor.advisorMouton, H. du T.
dc.contributor.advisorWilkinson, R. H.
dc.contributor.authorSalagae, Isaac Mahijokoen_ZA
dc.contributor.otherUniversity of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.
dc.date.accessioned2010-02-12T07:34:36Zen_ZA
dc.date.accessioned2010-08-13T13:10:47Z
dc.date.available2010-02-12T07:34:36Zen_ZA
dc.date.available2010-08-13T13:10:47Z
dc.date.issued2010-03en_ZA
dc.descriptionThesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.en_ZA
dc.description.abstractENGLISH ABSTRACT: The multicell inverter, being a widely used multilevel converter, has received much attention in recent years due to problems associated with cell capacitor voltage. In this dissertation we study the balancing problem with a focus on steady-state unbalance. This is achieved by systematic and mathematically rigorous study of the natural balancing mechanisms of the three-phase 2-cell and 3-cell multicell converter, undertaken by using dynamic modelling of the multicell converter, Bennet’s geometric model, steady-state and time constant analysis. Space vector analysis is also performed for the three-phase 2-cell multicell converter. The theory is verified by comparing theoretical results with simulation resultsen
dc.description.abstractAFRIKAANSE OPSOMMING: Die multisel omkeerder as algemeen-gebruikte meervlakkige omsetter het die afgelope jare groot belangstelling gewek op grond van die probleme wat met selkapasitor stroomspanning geassosieer word. In hierdie proefskrif word die balanseringsprobleem met die klem op die ewewigswanbalans bestudeer. Dit is verrig deur ’n sistematiese en streng wiskundige studie van die natuurlike balanseringsmeganismes van die drie-fase 2-sel en 3- sel multisel omsetter te maak. Dit is gedoen deur die gebruik van dinamiese modellering van die multisel omsetter, Bennet se geometriese model, ewewigtoestand tydkonstante analises, en ruimtevektoranalise is vir die drie-fase 2-sel multisel omsetter gedoen. Die teorie word bevestig deur die teoretiese resultate met die simuleringsresultate te vergelykaf
dc.format.extent416 p. : ill.
dc.identifier.urihttp://hdl.handle.net/10019.1/3981
dc.language.isoen
dc.publisherStellenbosch : University of Stellenbosch
dc.rights.holderUniversity of Stellenbosch
dc.subjectMulticell converteren_ZA
dc.subjectNatural balancingen_ZA
dc.subjectDissertations -- Electrical engineeringen
dc.subjectTheses -- Electrical engineeringen
dc.subjectElectric current convertersen
dc.titleNatural balancing of three-phase 2-cell and 3-cell multicell convertersen_ZA
dc.typeThesis
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Doctoral Degrees (Electrical and Electronic Engineering)