智能电力设备设计.docx
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智能电力设备设计
光伏逆变器、风电变流器
功率MOSFET、IGBT、IPM
电力电子产品/设备
APF、SVG
大容量变换技术
大功率电磁兼容设计
Photovoltaicinverter,windpowerconverters
PowerMOSFET,IGBT,IPM
Powerelectronicproducts/equipment
APF,SVG
Largecapacitytransform
EMCDesignPower
5 kWDC/DCconverterforhydrogengenerationfromphotovoltaicsources
InternationalJournalofHydrogenEnergy
ThispapercoversthedesignofaDC–DCpowerconverteraimedforhydrogenproductionfromphotovoltaicsources.Powerconditioningforsuchapplicationisusuallydrivenbydifferentconstraints:
highstep-downconversionratioisrequirediftheinputvoltageofsuchequipmenthastobecompatiblewithphotovoltaicsourcesthatareconnectedtogrid-connectedinverters;galvanicisolation;highefficiencyandlowmass.Takingintoaccountthosefactors,thisworkproposesapush–pullDC/DCconverterforpowerlevelsupto5 kW.Theoperationandfeaturesoftheconverterarepresentedandanalyzed.Designguidelinesaresuggestedandexperimentalvalidationisalsogiven.
ArticleOutline
Nomenclature
1.Introduction
2.DC/DCconverter:
operationprincipleandfeatures
2.1.PVandelectrolyserelectricalmodels
2.2.DC/DCconverterdesign
3.Applicationofaspecificdevelopment
3.1.Initialspecifications:
photovoltaicarrayandelectrolyser
3.2.Deviceselection
3.3.Inputandoutputfilters:
calculationsandrealisation
3.4.Magneticdesign:
transformerandinductors
3.5.DrivingandPWMcontrolcircuits
4.DC/DCconvertersimulationsandexperimentalresults
5.Conclusions
References
Grid-connectedphotovoltaicpowersystems:
Technicalandpotentialproblems—Areview 传统区域性光伏发电电力系统的革新
RenewableandSustainableEnergyReviews可再生与可持续利用能源评论
Traditionalelectricpowersystemsaredesignedinlargeparttoutilizelargebaseloadpowerplants,withlimitedabilitytorapidlyrampoutputorreduceoutputbelowacertainlevel.Theincreaseindemandvariabilitycreatedbyintermittentsourcessuchasphotovoltaic(PV)presentsnewchallengestoincreasesystemflexibility.Thispaperaimstoinvestigateandemphasizetheimportanceofthegrid-connectedPVsystemregardingtheintermittentnatureofrenewablegeneration,andthecharacterizationofPVgenerationwithregardtogridcodecompliance.TheinvestigationwasconductedtocriticallyreviewtheliteratureonexpectedpotentialproblemsassociatedwithhighpenetrationlevelsandislandingpreventionmethodsofgridtiedPV.Accordingtothesurvey,PVgridconnectioninvertershavefairlygoodperformance.Theyhavehighconversionefficiencyandpowerfactorexceeding90%forwideoperatingrange,whilemaintainingcurrentharmonicsTHDlessthan5%.Numerouslarge-scaleprojectsarecurrentlybeingcommissioned,withmoreplannedforthenearfuture.PricesofbothPVandbalanceofsystemcomponents(BOS)aredecreasingwhichwillleadtofurtherincreaseinuse.ThetechnicalrequirementsfromtheutilitypowersystemsideneedtobesatisfiedtoensurethesafetyofthePVinstallerandthereliabilityoftheutilitygrid.Identifyingthetechnicalrequirementsforgridinterconnectionandsolvingtheinterconnectproblemssuchasislandingdetection,harmonicdistortionrequirementsandelectromagneticinterferencearethereforeveryimportantissuesforwidespreadapplicationofPVsystems.Thecontrolcircuitalsoprovidessufficientcontrolandprotectionfunctionslikemaximumpowertracking,invertercurrentcontrolandpowerfactorcontrol.Reliability,lifespanandmaintenanceneedsshouldbecertifiedthroughthelong-termoperationofPVsystem.Furtherreductionofcost,sizeandweightisrequiredformoreutilizationofPVsystems.UsingPVinverterswithavariablepowerfactorathighpenetrationlevelsmayincreasethenumberofbalancedconditionsandsubsequentlyincreasetheprobabilityofislanding.ItisstronglyrecommendedthatPVinvertersshouldbeoperatedatunitypowerfactor.
ArticleOutline
Nomenclature
1.Introduction
2.Glossaryoftermsandacronyms
3.GlobalPVmoduleanditselectricalperformance
4.Grid-connectedPVsystems
4.1.Powervalue
4.2.RatiobetweenloadandPVpower
5.Potentialproblemsassociatedwithhighpenetrationlevelsofgrid-tiedPV
6.Grid-connectedinverters—controltypesandharmonicperformance
6.1.Harmonics
6.2.Inverters’operationalanalysis
7.Islandingdetectionmethods
8.Performanceandreliabilityofinverterhardware
9.Theoverallconclusionandrecommendation
Acknowledgements
References
光伏系统设计选型的优化联网系统中各模块的技术革新与效能整合提高
Optimalsizingofagrid-connectedPVsystemforvariousPVmoduletechnologiesandinclinations,inverterefficiencycharacteristicsandlocations
RenewableEnergy
Anoptimalsizingmethodologybasedonanenergyapproachisdescribedandappliedtogrid-connectedphotovoltaicsystemstakingintoaccountthephotovoltaicmoduletechnologyandinclination,theinvertertypeandthelocation.Amodeldescribingtheefficiencyform-Si,p-Si,a-SiandCISisused.ThemethodhasbeenappliedonvariousmeteorologicalstationsinBulgariaandCorsica(France).Themainparameteraffectingthesizingistheinverterefficiencycurve.TheinfluenceofthePVmoduletechnologyseemslessimportantexceptforamorphousphotovoltaicmodulesforwhichspecialremarkshavebeenmade.TheinclinationonthePVsysteminfluencestheperformancesparticularlywhentheinverterisundersizedcomparedtothePVpeakpower.
ArticleOutline
1.Introduction
2.PVmoduleefficiency
2.1.SomemodelsofPVefficiencyandmaximumpower
2.2.Experimentalverification
3.Grid-connectedinverters
4.SolarradiationestimationontiltedPVmodules
4.1.Thediffusecomponent
4.2.Thediffusecomponentontiltedsurface
4.3.Thetiltedbeamradiation
4.4.Thegroundreflectedradiation
5.Sizingoptimizationmethodology
6.Optimizationresults
6.1.InfluenceoftheinvertertypeandPVmoduleinclination
6.2.InfluenceofthePVtechnology
6.3.Siteinfluence
7.Monthlyperformances
7.1.MonthlyvariationofthePVefficiency
7.2.MonthlyvariationofPVsystemefficiency
8.Conclusions
Efficientdesignandsimulationofanexpandablehybrid(wind–photovoltaic)powersystemwithMPPTandinverterinputvoltageregulationfeaturesincompliancewithelectricgridrequirements 低压智能电力电子变换技术
ElectricPowerSystemsResearch
Inthispaperanefficientdesignalongwithmodelingandsimulationofatransformer-lesssmall-scalecentralizedDC—busGridConnectedHybrid(Wind–PV)powersystemforsupplyingelectricpowertoasinglephaseofathreephaselowvoltage(LV)strongdistributiongridareproposedandpresented.Themaincomponentsofthehybridsystemare:
aPVgenerator(PVG);andanarrayofhorizontal-axis,fixed-pitch,small-size,variable-speedwindturbines(WTs)withdirect-drivenpermanentmagnetsynchronousgenerator(PMSG)havinganembeddeduncontrolledbridgerectifier.AnoverviewofthebasictheoryofsuchsystemsalongwiththeirmodelingandsimulationviaSimulink/MATLABsoftwarepackagearepresented.Anintelligentcontrolmethodisappliedtotheproposedconfigurationtosimultaneouslyachievethreedesiredgoals:
toextractmaximumpowerfromeachhybridpowersystemcomponent(PVGandWTs);toguaranteeDCvoltageregulation/stabilizationattheinputoftheinverter;totransferthetotalproducedelectricpowertotheelectricgrid,whilefulfillingallnecessaryinterconnectionrequirements.Finally,apracticalcasestudyisconductedforthepurposeoffullyevaluatingapossibleinstallationinacitysiteofXanthi/Greece,andthepracticalresultsofthesimulationsarepresented.
ArticleOutline
1.Introduction
2.Configurationandmodelingofasmall-scalecentralizedDC—busGCHWPPSviaSimulink/MATLAB
2.1.Solarandwindpotentialanalysisofaselected(candidate)installationsite
2.2.PhotovoltaicSubsystem
2.2.1.Photovoltaicgenerator(PVG)model
2.2.2.Buck-BoostDC–DCConverter(BBC1andBBC2)models
2.2.3.Controlunit(DSP1)ofthePVS
2.3.WindEnergyConversionSubsystem
2.3.1.Windturbinemodel
2.3.2.Permanentmagnetsynchronousgenerator(PMSG)model
2.3.3.Embeddeduncontrolleddiodebridgerectifiermodel
2.3.4.Buck-BoostDC–DCConverter(BBC3andBBC4)models
2.3.5.Controlunit(DSP2)oftheWECS
2.4.Powerdecouplingcapacitor(CPD)
2.5.Necessaryrequirements(rules)forconnectingaHWPPStotheGreekLVdistributiongrid
2.5.1.Electricgridmodel
2.5.2.Invertermodel
2.5.3.Controlunit(DSP3)oftheinverter
3.Casestudy
3.1.SolarandwindpotentialanalysisoftheselectedsiteinXanthi,Greece
3.2.Simulationresults
4.Conclusions
AppendixA.Listofsymbols
AppendixB.Fuzzyrules
References
Vitae
Designofanon-invertingsynchronousbuck-boostDC/DCpowerconverterwithmoderatepowerlevel
RoboticsandComputer-IntegratedManufacturing
Thispaperpresentsthedesignofanon-invertingsynchronousbuck-boostDC/DCpowerconverterwithmoderatepowerlevelforasolarpowermanagementsystem.Thebuck-boostrequirementarisesfromtherapidchangesintheatmosphericconditionorthesunlightincidentangle.Thesystemmainlyconsistsofthenon-invertingsynchronousbuck-boostDC/DCpowerconverter,MOSFETdrivers,anti-crossconductionlogiccircuitry,feedbackcompensator,andPWMregulator.Thesystemiscapableofconvertingthesupplyvoltagesourcetohigherandlowervoltagestotheloadterminalwithvoltagepolarityunchanged.ThevoltageattheloadterminaliscontrolledbycontinuouslyadjustingthedutycycleofthePWMregulator.Applicationofthebuck-boostconverterinbatterymanagementsystemdesignisalsoaddressed.
ArticleOutline
1.Introduction
2.Synchronousbuck-boostconverter
3.Systemdesign
4.Dynamiccharacteristic
5.