Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality

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dc.contributor.advisorFolly, Komla Aen_ZA
dc.contributor.advisorKhan, Mohamed Azeemen_ZA
dc.contributor.authorNtsadu, Ntlahlaen_ZA
dc.date.accessioned2018-01-23T11:54:52Z
dc.date.available2018-01-23T11:54:52Z
dc.date.issued2017en_ZA
dc.description.abstractWind power generation has gained a large share in the renewable energy market over the past few years. This study investigates the impact of large scale penetration of permanent magnet synchronous generator (PMSG) based wind turbines on power quality of the grid. PMSGs are attractive due to the absence of a gearbox in the drive-train, which results in lower maintenance costs and higher reliability. Moreover, the advancements in power electronics have facilitated PMSGs to generate optimal power at varying wind speed conditions. This is achieved through the use of maximum power point tracking algorithms. The drawbacks of PMSG-based wind energy systems are that they inject harmonics into the network and cause flicker as well as other power quality issues. Despite these disadvantages, the grid code requires that PMSGs stay connected to the grid even under grid disturbances. This is because the reactive power control capability of PMSG-based wind energy systems can actually assist with voltage support. It will be shown in this study that disconnecting large scale PMSGs based wind turbines during grid disturbances has a detrimental effect on transient stability of the grid. This study will show that PMSG-based wind energy systems improve transient stability and assist in voltage support through reactive power control. Moreover, the impacts of large scale PMSG based wind turbines on power quality of the grid can be reduced by various means, which are also addressed in the study.en_ZA
dc.identifier.apacitationNtsadu, N. (2017). <i>Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/26891en_ZA
dc.identifier.chicagocitationNtsadu, Ntlahla. <i>"Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 2017. http://hdl.handle.net/11427/26891en_ZA
dc.identifier.citationNtsadu, N. 2017. Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Ntsadu, Ntlahla AB - Wind power generation has gained a large share in the renewable energy market over the past few years. This study investigates the impact of large scale penetration of permanent magnet synchronous generator (PMSG) based wind turbines on power quality of the grid. PMSGs are attractive due to the absence of a gearbox in the drive-train, which results in lower maintenance costs and higher reliability. Moreover, the advancements in power electronics have facilitated PMSGs to generate optimal power at varying wind speed conditions. This is achieved through the use of maximum power point tracking algorithms. The drawbacks of PMSG-based wind energy systems are that they inject harmonics into the network and cause flicker as well as other power quality issues. Despite these disadvantages, the grid code requires that PMSGs stay connected to the grid even under grid disturbances. This is because the reactive power control capability of PMSG-based wind energy systems can actually assist with voltage support. It will be shown in this study that disconnecting large scale PMSGs based wind turbines during grid disturbances has a detrimental effect on transient stability of the grid. This study will show that PMSG-based wind energy systems improve transient stability and assist in voltage support through reactive power control. Moreover, the impacts of large scale PMSG based wind turbines on power quality of the grid can be reduced by various means, which are also addressed in the study. DA - 2017 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2017 T1 - Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality TI - Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality UR - http://hdl.handle.net/11427/26891 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/26891
dc.identifier.vancouvercitationNtsadu N. Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 2017 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/26891en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical Engineeringen_ZA
dc.subject.otherPermanent magneten_ZA
dc.subject.othersynchronous generatorsen_ZA
dc.subject.otherrenewable energyen_ZA
dc.subject.otherpower qualityen_ZA
dc.titleImpact assessment of large-scale penetration of permanent magnet synchronous generators on power qualityen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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