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碰撞式微型压电风能采集器实验研究(英文).docx

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碰撞式微型压电风能采集器实验研究(英文) Title:ExperimentalStudyonCollision-TypeMicro-PiezoelectricWindEnergyHarvesting Abstract:Thispaperpresentsanexperimentalstudyonthecollision-typemicro-piezoelectricwindenergyharvesting,whichconvertswindenergyintoelectricalenergythroughthevibrationofpiezoelectricmaterials.Aprototypeofthemicro-piezoelectricwindenergyharvesterisdesignedandfabricated,anditsperformanceisevaluatedundervariouswindspeeds.Theexperimentalresultsdemonstratethattheproposedwindenergyharvestercangenerateamaximumpoweroutputof15.4mWwhenexposedtoawindspeedof3.5m/s.Furthermore,theeffectsofthenumberofpiezoelectricelements,thesizeofthepiezoelectricelements,andthesizeoftheairgapontheperformanceofthewindenergyharvesterareinvestigated,andtheexperimentalresultsareanalyzed. Introduction:Inrecentyears,renewableenergysources,suchaswindenergy,solarenergy,andhydroenergy,havereceivedincreasingattentionduetothegrowingconcernsaboutclimatechange,environmentalpollution,andenergysecurity.Windenergy,whichisabundant,clean,andrenewable,hasbeenwidelyadoptedforpowergeneration.However,theefficiencyoftraditionalwindturbinesislimitedbytheirhighcost,largesize,andlowpoweroutput.Therefore,itisnecessarytodevelopnewtechnologiesforwindenergyharvesting,suchasmicro-piezoelectricwindenergyharvesting,whichcancapturewindenergyatlowwindspeedswithhighefficiencyandlowcost. Methods:Thecollision-typemicro-piezoelectricwindenergyharvesterconsistsofacantileverbeam,amassblock,andpiezoelectricelements.Whenexposedtowind,thecantileverbeamvibrates,andthemassblockcollideswiththepiezoelectricelements,generatinganelectricchargeduetothepiezoelectriceffect.Theprototypeofthemicro-piezoelectricwindenergyharvesterisfabricatedusingmicro-electro-mechanicalsystems(MEMS)technologywithsiliconandmetallayers.Thedimensionsofthecantileverbeam,themassblock,andthepiezoelectricelementsareoptimizedthroughnumericalsimulationsusingthefiniteelementmethod(FEM)tomaximizethepoweroutputandminimizethesizeandweightofthewindenergyharvester. Results:Theexperim