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1、ARTICLEINPRESSSolarEnergyMaterials&SolarCells87(2005)49–59www.elsevier.com/locate/solmatAsimplephoto-voltaictrackingsystema,bcdKh.S.Karimov,M.A.Saqib,P.Akhter,M.M.Ahmed,ddJ.A.Chattha,S.A.YousafzaiaPhysicalTechnicalInstituteofAcademyofSciences,RudakiAv
2、e,33,Dushanbe734025,TajikistanbG.I.K.InstituteofEngineeringSciencesandTechnology,Topi(DistrictSwab)23460,NWFP,PakistancPakistanCouncilofRenewableEnergyTechnologies,25,H-9,Islamabad,PakistandG.I.K.InstituteofEngineeringSciencesandTechnology,Topi(Distric
3、tSwai)23460,NWFP,PakistanReceived15May2004;receivedinrevisedform10August2004;accepted13August2004AbstractThispaperdescribesasimplephoto-voltaic(PV)trackingsystemwhichhasbeendesignedandmanufacturedusingapyramidalstandasabase.Arotatingunitconsistingoftwo
4、pairsofmodulesfixedatanangleof1701betweenthemwasinstalledattheupperedgeofthestand.ThefourmodulesandaDCmotorwereconnectedtoabridgecircuitmakingthesystemsensitivetosolartracking.ThePVtrackerhasaDC–DC(24/2V)converter,DC–AC(24/220V)inverterandabattery.Themo
5、dulesareabletoprovideamaximumpowerof100W,whichfeedstheconverter,inverterandDCmotor.Windresistanceofthetrackerisquitelow.2Thetotalareaofthefourmodulesis1.26m.Theinclinationanglebetweenthemodulesandthehorizontalplaneisadjustable(3417111)andthetrackingan
6、gleis1201.Thesystemcantracksolarmotionwithanerrorof7101.ThedesignedPVtrackingsystem,withmodulesfixedatanangleof1701tofeedtheloadaswellastheDCmotor,exhibitedittobeanefficientenergy-conversionsystem.Thefabricatedsystemofferslowwindresistance.Thecostanalysi
7、sdatarevealedthattheproposeddesignwasveryeconomicalandcosteffective.r2004ElsevierB.V.Allrightsreserved.Keywords:Photo-voltaicpowersystems;PVmodules;TrackingsystemsCorrespondingauthor.E-mailaddresses:khasan@giki.edu.pk(Kh.S.Karimov),saqib@giki.edu.pk(M
8、.A.Saqib),shamsi@isb.comsats.net.pk(P.Akhter).0927-0248/$-seefrontmatterr2004ElsevierB.V.Allrightsreserved.doi:10.1016/j.solmat.2004.08.010ARTICLEINPRESS50Kh.S.Karimovetal./SolarEnergyMaterials&SolarCells87(2005)49–591.IntroductionThere
