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文献信息: 文献标题:ANewControllerSchemeforPhotovoltaicsPowerGeneration Systems(光伏发电系统的一种新的控制方案) 国外作者:TamerT.N.Khatib,AzahMohamed,NowshadAmin 文献出处:《EuropeanJournalofScientificResearch》,2009,Vol.33No.3, pp515-524 字数统计:英文1337单词,7006字符;中文2149汉字 外文文献: ANewControllerSchemeforPhotovoltaicsPower GenerationSystems Abstract:Thispaperpresentsanewcontrollerschemeforphotovoltaic(PV) powergenerationsystems.TheproposedPVcontrollerschemecontrolsboththe boostconverterandthebatterychargerbyusingamicrocontrollerinordertoextract maximumpowerfromthePVarrayandcontrolthechargingprocessofthebattery. Theobjectiveofthepaperistopresentacosteffectiveboostconverterdesignandan improvedmaximumpowerpointtrackingalgorithmforthePVsystem.AMATLAB basedsimulationmodeloftheproposedstandalonePVsystemhasbeendevelopedto evaluatethefeasibilityofthesysteminensuringmaximumpowerpointoperation. 1.Introduction Recently,theinstallationofPVgenerationsystemsisrapidlygrowingdueto concernsrelatedtoenvironment,globalwarming,energysecurity,technology improvementsanddecreasingcosts.PVgenerationsystemisconsideredasaclean andenvironmentally-friendlysourceofenergy.ThemainapplicationsofPVsystems areineitherstandaloneorgridconnectedconfigurations.StandalonePVgeneration systemsareattractiveasindispensableelectricitysourceforremoteareas.However, PVgenerationsystemshavetwomajorproblemswhicharerelatedtolowconversion efficiencyofabout9to12%especiallyinlowirradiationconditionsandtheamount ofelectricpowergeneratedbyPVarraysvariescontinuouslywithweatherconditions. Therefore,manyresearchworksaredonetoincreasetheefficiencyoftheenergy producedfromthePVarrays. ThesolarcellV-Icharacteristicsisnonlinearandvarieswithirradiationand temperature.ButthereisauniquepointontheV-IandP-Vcurves,calledasthe maximumpowerpoint(MPP),atwhichatthispointthePVsystemissaidtooperate withmaximumefficiencyandproducesitsmaximumpoweroutput.Thelocationof theMPPisnotknownbutcanbetracedbyeitherthroughcalculationmodelsor searchalgorithms.Thus,maximumpowerpointtra