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光伏发电系统外文翻译--光伏发电系统的新型控制方案.pdf

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英文1300单词，7000英文字符，中文2150汉字 出处：KhatibTTN,MohamedA,AminN.Anewcontrollerschemeforphotovoltaicspower generationsystems[J].EuropeanJournalofScientificResearch,2009,33(3):515-524. 外文文献： ANewControllerSchemeforPhotovoltaicsPower GenerationSystems KhatibTTN,MohamedA,AminN Abstract Thispaperpresentsanewcontrollerschemeforphotovoltaic(PV)power generationsystems.TheproposedPVcontrollerschemecontrolsboththeboost converterandthebatterychargerbyusingamicrocontrollerinordertoextract 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,maximumpowerpointtracking(MPPT)techniquesare neededtomaintai