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基于LMI的交直流混合微网断面电压非脆弱鲁棒H_∞控制.docx

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基于LMI的交直流混合微网断面电压非脆弱鲁棒H_∞控制 Title:RobustH∞ControlofSectionVoltageofHybridAC/DCMicrogridsbasedonLMI Abstract: Microgridshavegainedsignificantattentionasapromisingsolutionforensuringareliableandefficientpowersupplyinmodernelectricaldistributionsystems.HybridAC/DCmicrogrids,whichintegratebothalternatingcurrent(AC)anddirectcurrent(DC)systems,offeradditionaloperationalflexibilityandimprovedefficiency.However,thedynamicinterconnectionbetweentheseACandDCsystemsposeschallengestothecontrolandstabilityofthemicrogrid.ThispaperpresentsarobustH∞controlstrategybasedonlinearmatrixinequalities(LMI)formanagingthesectionvoltageofhybridAC/DCmicrogrids,enhancingtheirresilienceandstability. Introduction: Theincreasingintegrationofrenewableenergysourcesandthegrowingdemandforefficientandcleanpowersupplyhaveledtothedevelopmentofmicrogridsystems.Microgridsaresmall-scalepowersystemsthatcanoperateindependentlyorinterconnectedwiththemaingrid.HybridAC/DCmicrogrids,whichconsistofACandDCsystems,offerseveraladvantages,includingimprovedresilienceandflexibility.Nevertheless,theinteractionbetweenthesetwosubsystemscanleadtosysteminstabilityandvoltagedeviations.Toaddressthesechallenges,robustcontrolstrategiesarerequiredtoensurestableandreliableoperationofthemicrogrid. LiteratureReview: Previousresearchhasexploredvariouscontrolstrategiesformicrogrids,includingdecentralizedcontrol,droopcontrol,andstatefeedbackcontrol.However,thesestrategiesoftenfailtoproviderobustperformanceinthepresenceofuncertaintiesanddisturbances.H∞control,ontheotherhand,offersrobuststabilityandperformanceguaranteesbyminimizingtheworst-caseeffectofuncertaindisturbances.Linearmatrixinequalities(LMI)provideapowerfulmathematicalframeworkfordesigningandanalyzingH∞controllers. Methodology: ThispaperproposesarobustH∞controlstrategybasedonLMIformanagingthesectionvoltageofhybridAC/DCmicrogrids.Thecontrolobjectiveistoregulatethesectionvoltagewithinspecifiedlimits,whileensuringrobuststabilityandoptimalperformance.TheH∞controlproblemisformulate