dc.contributor.advisor | Kamper, M. J. | en_ZA |
dc.contributor.author | Mdakane, Lethiwe Philile | en_ZA |
dc.contributor.other | Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. | en_ZA |
dc.date.accessioned | 2020-02-26T04:41:05Z | |
dc.date.accessioned | 2020-04-28T12:14:17Z | |
dc.date.available | 2020-02-26T04:41:05Z | |
dc.date.available | 2020-04-28T12:14:17Z | |
dc.date.issued | 2020-03 | |
dc.identifier.uri | http://hdl.handle.net/10019.1/108010 | |
dc.description | Thesis (MEng)--Stellenbosch University, 2020. | en_ZA |
dc.description.abstract | ENGLISH 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.abstract | AFRIKAANSE 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.extent | xv, 86 leaves : illustrations (some color) | |
dc.language.iso | en | en_ZA |
dc.publisher | Stellenbosch : Stellenbosch University | en_ZA |
dc.subject | Geared PM wind generator | en_ZA |
dc.subject | Permanent magnet motors | en_ZA |
dc.subject | Wind power | en_ZA |
dc.subject | Electric generators -- Direct current -- Measurement | en_ZA |
dc.subject | UCTD | en_ZA |
dc.subject | Maximum power point tracking | en_ZA |
dc.title | Geared PM wind generator and MPPT control for DC-grid wind energy system | en_ZA |
dc.type | Thesis | en_ZA |
dc.description.version | Masters | en_ZA |
dc.rights.holder | Stellenbosch University | en_ZA |