Maximum power point tracking of a DFIG wind turbine system 786328456
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Maximum power point tracking of a DFIG wind turbine system 786328456
DissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 trical and Computer EngineeringStudent ID No.:1424042007Name:Phan Dinh ChungChief advisor:Prof. Shigeru YAMAMOTODate of Submission: January 6. 2017AbstractDoubly-fed induction generator (DFTG) has been used popularly in variable speed wind turbines because the Dl'lG wind turbine uses a small back-to Maximum power point tracking of a DFIG wind turbine system 786328456 -back converter to interface to the connected grid, about 30% comparing to the wind turbine's capacity, and provides a control ability as good as a vaMaximum power point tracking of a DFIG wind turbine system 786328456
riable speed wind turbine using a generator with a lull converter. The most important purpose of a variable speed wind turbine or a DFIG wind turbine,DissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 ethods. Generally, the previously proposed schemes can be listed into two groups including wind speed-based method and wind speed sensorless one. With the first group, the wind turbine can give a good performance in tracking maximum power point but it requires a precise and instantaneous wind speed Maximum power point tracking of a DFIG wind turbine system 786328456 measurement; this requirement hardly achieve in practice. With methods in the second group, an anemometer does not require but the wind turbine usingMaximum power point tracking of a DFIG wind turbine system 786328456
these methods cannot track maximum power point efficiently under varying wind conditions.In this dissertation. I proposed two methods and control law DissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 method while the second one is based on an adaptive MPPT method. Both methods do not require any information of wind data or wind sensor. Comparing to the first scheme, the second method docs not require the precise parameters of the wind turbine. The maximum power point tracking (MPPT) ability of t Maximum power point tracking of a DFIG wind turbine system 786328456 hese proposed methods are theoretically proven under some certain assumptions. In particular. DF1G stale-space models arc derived and control techniquMaximum power point tracking of a DFIG wind turbine system 786328456
es based on the Lyapunov function arc adopted toderive the control methods corresponding to (he proposed maximum power point tracking schemes. The quaDissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 imulation results show that the wind turbine implemented with the proposed maximum power point tracking methods and control laws can track the optimal operation point more properly comparing to the wind turbine using the conventional MPPT-curve method. The power coefficient of the wind turbine using Maximum power point tracking of a DFIG wind turbine system 786328456 the proposed methods can retain its maximum value promptly under a drammaclical change in wind velocity while this cannot achieve in the wind turbineMaximum power point tracking of a DFIG wind turbine system 786328456
using the conventional MPPT-curve. Furthermore, the energy output of the DFIG wind turbine using the proposed methods is higher compared to the conveDissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 DFIG Wind Turbine System DF1GX ểpẴ (Division) :Electrical and computer engineering—fis&rrr (Student ID Number) : 1424042007ft % (Name) : Phan Dinh Chung(Chief supervisor) : YAMAMOTO Shigeru(Dissertation Summary)Doubly-fed. induction .generator (DFIG). has been. used, popularly, .in variable speed wi Maximum power point tracking of a DFIG wind turbine system 786328456 nd. turbines. because, the DFIG. wind.turbine.uses a small.back-to-back.converter to interface, to the. connected grid, about .30% comparing to..the .Maximum power point tracking of a DFIG wind turbine system 786328456
wind turbine's. capacity,. and. provides a control ability. as good.as. a. variable speed, wind, turbine using, a generator. wit h. a. fall. converterDissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 .fox..electric.,generation. To meet this objective...several publications.provided different,.methods,. Generally,. the.previously.proposed. schemes..can..be..listed, into. two grpups..such.aswmd..§peed-basedm.ethQdand.>ymd.SPfied.s.en5Priess..0ner.>YithJhe.tirst.gr.0.UPJ.the.wmd.ru.rt>me c an -give Maximum power point tracking of a DFIG wind turbine system 786328456 ạ pood. performance in .tracking, maximu m. power. poi nt. but. it. requires a..precise.and.instantaneous.wind speed.,measurement; this requirement haMaximum power point tracking of a DFIG wind turbine system 786328456
rdly..achieve,ip..practice With methods m.Ahe...second .group,...an anemomet er ..does. not. requ ire. but. the. wind.. turbine. usi ng. these methodsDissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 s..fo.r...obta.inmg..max.inwm..ene.rgy.putput..pf Poub.lỵTÍed.induction generator..wind..rnrhine,.The.first.meAhod..aims.AO.improve.Jte.eonyentional.MEET..WM .method[.while, .the ..second.one., is. based, on .an. adaptive ..MPPT..method,..Both methods, do. not. require.any information of wind data o Maximum power point tracking of a DFIG wind turbine system 786328456 r. .wind, sensor, .Comparing, to. the. first .ssheme,. the .second .method, does. not. require, the prec.ise.parameters pf the wind turbine. TheymaximMaximum power point tracking of a DFIG wind turbine system 786328456
uni power pointtracking.lMPPT).ability; of.these.proposed methods, axe theoreucallv.proven under.some, certain assumptions- hl particular. DFIG state-DissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 g to the.proposed maxmnim.power.point tracking schemes- The quality of the proposed methods .is verified, by. the numerical.simulation pfa.l,5:.MW DFIG wind.turbine .yyith.thediffe.rem.scenario of wind, velocity. The. Simulation, results, show. that, the w.md. turbine, implemented, with the proposed Maximum power point tracking of a DFIG wind turbine system 786328456 .maximum power point tracking .methods..and control.laws, can. track, the. optimal, operation.point, more.properly comparing, to.the..wind. turbine uMaximum power point tracking of a DFIG wind turbine system 786328456
sing the. conventional MPPT-curye method.. The power coefficient of the wind, turbine using. the proposed methods can.retain its.maxmium.yalue prpmpt.DissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElect Maximum power point tracking of a DFIG wind turbine system 786328456 the DFIG wind.turbine.using the. proposed, methods..is. higher, compared, to .the conventional MPPT-curve.method, under .the same, conditions:............................................................................................ContentsAbstractiContentsivList of FiguresVList of Tablesvii Maximum power point tracking of a DFIG wind turbine system 786328456 DissertationMaximum Power Point Tracking of aDFIG Wind Turbine SystemGraduate School ofNatural Science & TechnologyKanazawa UniversityDivision ofElectGọi ngay
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