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Geared PM wind generator and MPPT control for DC-grid wind energy system

dc.contributor.advisorKamper, M. J.en_ZA
dc.contributor.authorMdakane, Lethiwe Philileen_ZA
dc.contributor.otherStellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.en_ZA
dc.date.accessioned2020-02-26T04:41:05Z
dc.date.accessioned2020-04-28T12:14:17Z
dc.date.available2020-02-26T04:41:05Z
dc.date.available2020-04-28T12:14:17Z
dc.date.issued2020-03
dc.identifier.urihttp://hdl.handle.net/10019.1/108010
dc.descriptionThesis (MEng)--Stellenbosch University, 2020.en_ZA
dc.description.abstractENGLISH ABSTRACT: In this study a geared PM generator for small-scale DC-grid connected wind energy systems is considered. A commercial 2.2 kW PM generator is evaluated using FEA software and is used for practical system measurements. An alternative 4 kW PM generator that achieves a high torque density and low cogging torque is designed. A simple robust feedforward maximum power point tracking (MPPT) control method is proposed, which is attained through feedback gain-scheduling. A practical set-up of the system is built and practical measurements of the system are taken. It is found, from simulation, that the proposed MPPT control method that is derived is capable of having the system operating at its MPPT trajectory. The practical results show that the duty cycle of the DC-DC converter can be adjusted according to optimum values in order to control the system and have it operating at its MPPT.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: In hierdie studie word ’n geratte PM-generator vir kleinskaalse GS-netwerkverbinding windenergie-stelsels beskou. ’n Kommersiële 2.2 kW PM-generator word met behulp van FEA-sagteware geëvalueer en word gebruik vir praktiese stelselmetings. ’n Alternatiewe 4 kW PM-generator met ’n hoë draaimoment digtheid en ’n lae getande draaimoment, is ontwerp. ’n Eenvoudige robuuste vorentoevoer maksimum drywingspunt volging (MDPV) beheermetode word voorgestel, wat bereik word deur middel van terugvoer aanwinsskedulering. ’n Praktiese opstelling van die stelsel is gebou en praktiese metings van die stelsel is gedoen. Vanuit simulasie is gevind dat die voorgestelde MDPV-beheermetode wat afgelei is, die stelsel op sy MDP-baan kan laat werk. Die praktiese resultate wys dat die dienssiklus van die GS-GS-omsetter kan verstel word ooreenkomstig optimum waardes om sodoende die stelsel by MDP te beheer.af_ZA
dc.format.extentxv, 86 leaves : illustrations (some color)
dc.language.isoenen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.subjectGeared PM wind generatoren_ZA
dc.subjectPermanent magnet motorsen_ZA
dc.subjectWind poweren_ZA
dc.subjectElectric generators -- Direct current -- Measurementen_ZA
dc.subjectUCTDen_ZA
dc.subjectMaximum power point trackingen_ZA
dc.titleGeared PM wind generator and MPPT control for DC-grid wind energy systemen_ZA
dc.typeThesisen_ZA
dc.description.versionMastersen_ZA
dc.rights.holderStellenbosch Universityen_ZA


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