6 An optimal design of a grid connected hybrid wind_photovoltaic_fuel cell system for distributed energy production

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1、AnOptimalDesignofaGridConnectedHybridWind/Photovoltaic/FuelCellSystemforDistributedEnergyProduction1,21,212DebosmitaDasRezaEsmailiLongyaXuDaveNichols1.DepartmentofElectricalandComputerEngineering2.AmericanElectricPowerTheOhioStateUniversity4001BixbyRoadColumbus,OH43210,USAGrovep

2、ort,OH43125,USAdas.42@osu.eduesmaili.4@osu.eduxu.12@osu.edudknichols@aep.comAbstract–ThispaperproposesahybridenergysystemThispaperdiscussesahybridwind,photovoltaicandfuelconsistingofwind,photovoltaicandfuelcelldesignedtosupplycellgeneratingsystem.Thewindandphotovoltaicareusedcon

3、tinuouspowertotheload.Asimpleandeconomiccontrolasprimaryenergysources,whilethefuelcellisusedaswithdc-dcconverterisusedformaximumpowerpointtrackingsecondaryorback-upenergysource.Asimplecontrolandhencemaximumpowerextractionfromthewindturbinemethodtracksthemaximumpowerfromthewinden

4、ergyandphotovoltaicarray.Duetotheintermittentnatureofbothsourcewithoutmeasuringthewindorgeneratorspeed,whichthewindandphotovoltaicenergysources,afuelcellisaddedtothesystemforthepurposeofensuringcontinuouspowerflow.isveryusefulforactualsmallsizewindturbines.ThesameThefuelcellisth

5、uscontrolledtoprovidethedeficitpowerwhencontrolprincipleisappliedtotrackmaximumpowerpointofthecombinedwindandphotovoltaicsourcescannotmeetthethephotovoltaicsystemwithoutsensingtheirradiancelevelnetpowerdemand.Inworstenvironmentalconditions,whenandtemperature.Thefuelcellisalsocon

6、trolledusingadc-dcthereisnooutputpowerfromthewindorphotovoltaicsources,convertertosupplythedeficitpowerwhentheprimarythefuelcellwilloperateatitsratedpowerof10kW.Hencethisenergysourcescannotmeettheloaddemand.Inthecompletesystemunderanyoperatingconditionwillensureaminimumabsenceof

7、powerfromthewindandphotovoltaicsourcesthepowerflowof10kWtotheload.Thishybridsystemallowsfuelcellsuppliesitsfullratedpowerof10kW.maximumutilizationoffreelyavailablerenewableenergysourceslikewindandphotovoltaicanddemand-basedutilizationofhydrogen-basedfuelcell.TheproposedsystemisT

8、hesystemstudiedinthispapercomprisesofa20kWattra