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1、杭州电子科技大学硕士学位论文ABSTRACTCurrently,theresearchonactivepowerfilterismoreonthree-phasethree-wireandthree-phasefour-wireactivepowerfilter,whilelessonthesingle-phaseactivepowerfilter.Buttheapplicationamountofsingle-phasepowerelectronicequipmentisverylarge,whichcausesseriousharmonicpollutiontothepowergrid.
2、Inaddition,theharmoniccurrentdetectionandcontrol,DCsidevoltagecontrolofsingle-phaseactivepowerfilterbothhavetheirownspecificproblems.Theselectedharmoniccanbefilteredbythepassivefilter,andthepowerfactorcanbeimprovedbythereactivepowercompensator.Whencombingtheadvantagesofthetwoformer,itwillnotonlyred
3、ucethecapacityofsingle-phaseactivepowerfilter,butalsosimplifyitselftoimprovethecost-effectiveratio.Therefore,theresearchofnovelhybridsingle-phaseactivepowerfilterisofgreatpracticalsignificance.Thispaperdiscussesanewkindschemeofharmoniccurrentdetectionandcontrol,andthenconductsanexperimentset-upofno
4、velhybridsingle-phaseactivepowerfilterforexperimentstudy.Firstly,thedomesticandinternationalresearchstatusaswellasthedevelopmenttrendsofthehybridactivepowerfilterwasreviewedforthispaper.Onthisbasis,thewindowedFastFourierTransformofharmoniccurrentdetectionscheme,thecombinationbetweenPIcontrolandrepe
5、titivecontrolofharmoniccompensationschemewasputforward.Afterit,theoverallschemeandfunctionsofthesystemwasdetermined,alsotheresearchideasweredeveloped.Secondly,theoverallstructureofnovelhybridsingle-phaseactivepowerfilterwasascertained.Accordingtotheparticularityofsingle-phasesystemsandtheanalysisof
6、commonharmoniccurrentdetectionmethods,theharmoniccurrentdetectionmethodofwindowedFastFourierTransform,theintegratedcontrolmethodofPIcontrolandrepetitivecontrolwereputforward.ThroughMATLABsimulation,windowedFastFourierTransformmethodandthree-phaseinstantaneousreactivepowertheory,whichiswidelyusedatp
7、resent,werebothappliedinsingle-phaseactivepowerfilter.Theresultsshowedthatthedetectionmethodofthispaperwasmoreaccurateindetection,moreconvenientinapplication.Afterwards,anobservationandcontrolsynthesissimul
