交错反激式光伏并网微逆变器的分析

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1、万方数据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万方数据目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IAbstract．．．．．．．⋯．．．．．．．．