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1、萬方數(shù)據(jù)AbstractInthecontextofglobalenvironmentaldegradationandaincreasingshortageofenergy,thedeansolarenergyhasreceivedextensiveattention,andthephotovoltaicindustryhasrapidlydeveloped.Miniaturephotovoltaicsystemhasbeendevelopingrapidly。Inthephotovoltaicp
2、owergenerationsystem,duetotheproblemssuchasthephotocrackandshadowofthephotovoltaicpanels,outputofSinglepieceofphotovoltaicmoduleswillbeaffected.Andthiswillcauseaseriousdeclineintheefficiencyofphotovoltaicpowergenerationsystems.Therefore,thepowergenera
3、tionequipmentwhichisconnectingmicroinverterwithasinglephotovoltaicmodulestogetherandisequippedwithMPPTcontroltechnologycanachievemaximizesolarpowergeneration.MicroPVsystemcanbeproducemodular,flexiblesystemexpansion,easytomaintain,withgoodpotentialford
4、evelopment.Theinterleavedflybackmicroinvertersastheresearchobjectinthispaper,studytheworkingprinciple,controltechnique,MPPTandislandingdetectiontechnology.Firstly,analyzetheflybackconverterandinterleavedflybackcircuitstructureandworkingprinciple,useth
5、eactiveclampcircuittosolvetheproblemoftransformerleakageenergyproblem,thenanalyzetheworkingprocessofactiveclampconverterandlastselecttheactiveclampstaggeredflybackcircuittopologyasthemainarticle.BasedonthecurrentPIcontrollerandnetworkcontrolstrategy,t
6、hecontrolissimpleandreliableandcanoutputhighqualityelectriccurrent.Basedoncomprehensiveconsideration,thedisturbanceobservermethodisusedtodothemaximumpowerPOinttrackingsystemtoenlargetheoutputpower.Anti-islandingstrategyistoBSeactiveislandingdetectionB
7、equencyshiftmethodtoensurepowersupplyandequipmentsafety.Usingmaflabtoestablishcontrolsystemsimulationmodeltoverifythecorrectnessofthetheory.Atlast,designthehardwarecircuitofthemicroinverter,calculateandselecttheparameterofflybacktransformerandmastersw
8、itchtubesandothercomponentsandfmishthesoftwaredesign.Figure【39】table【1】reference【54】Keywords:PV;microinverters;interleavedflybacktransform:ActiveClampChinesebookscatalog:TM615;Ⅲ萬方數(shù)據(jù)目錄摘要?????????????????????????????????IAbstract.......?........