An efficient parallel SSHI rectifier for piezoelectric energy scavenging systems

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1、AnEfficientParallelSSHIRectifierforPiezoelectricEnergyScavengingSystemsXuan-DienDo,Young-HunKo,Huy-HieuNguyen,Huy-BinhLeandSang-GugLeeDepartmentofElectricalEngineering,KoreaAdvancedInstituteofScienceandTechnology,SouthKoreadien207@kaist.ac.kr,gnsstar@kaist.ac.kr,huyhieu@k

2、aist.ac.kr,binh@kaist.ac.kr,sglee@ee.kaist.ac.krAbstract—Todaygreenenergyplaysanimportantroleinpressuresensorsystems.APEtransducerbasedonthePEhumanlife;thus,manymethodshavebeenusedtoharvestgreeneffectistypicallyusedtoconvertmechanicalvibrationenergyenergyfromthesurroundin

3、genvironmentfortheserviceofintoelectricalenergy.Theelectricalenergyattheoutputofhumankind.Oneofthemostpopularmethodsinvolvestheuseofthetransducerisastrongandirregularfunctionoftime;hence,apiezoelectric(PE)materialtoharvestenergyfromvibrationanAC-DCrectifierisneededtoprodu

4、ceaDCsupplysource.sources.APEenergyscavengingsystemhastwofunctionalTheAC-DCrectifierscommonlyusedinPEharvestingsections:atransducer,whichconvertspotentialenergyintosystemsarefull-bridgerectifiersandvoltagedoublerrectifiers.electricalenergy;andanelectricalinterface,whichis

5、usedtomanagethiselectricalenergy.OneofthemostimportantpartsThemainlimitationoftheserectifiersisthelowpoweroftheelectricalinterfaceisarectifier,suchasanAC-DCextraction.Ramadass[1-2]introducedaswitch-onlyrectifierconverter.Thispaperproposesanewcontrolschemeforanthatcanprovi

6、dedoublethepowerextractionefficiencyefficientparallelrectifierbasedonasynchronizedswitchthroughtheadditionofasingleswitch.Furtherimprovementharvestingoninductor(SSHI)process;theinductorisparallelwasachievedwithasynchronizedswitchharvestingonwithanactivefull-bridgerectifie

7、r.Theproposedcontrolschemeinductor(SSHI)technique.TherearetwoSSHIcategories:circuithelpsparallelSSHIrectifiercansignificantlyincreasetheparallelSSHI[1-5]andserialSHHI[4].BothcategoriesareamountofpowerextractedfromPEmaterial.Theparallelbasedonaflippingphenomenon:thatis,are

8、sonantloopisinductorenablesthevoltageacrosstheinternalcapacitorofthecreatedbyaninternalcapacitor