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一种基于级联回路控制和前馈补偿的高效逆变器.docx

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一种基于级联回路控制和前馈补偿的高效逆变器 Title:AHigh-EfficiencyInverterbasedonCascadedLoopControlandFeedforwardCompensation Abstract: Inrecentyears,thedemandforhigh-efficiencypowerinvertershasbeenincreasingduetotherapidgrowthofrenewableenergysourcesandelectricvehicles.Inthispaper,weproposeanovelhigh-efficiencyinverterdesignthatcombinescascadedloopcontrolandfeedforwardcompensationtechniques.Theinverter'sperformanceisevaluatedthroughsimulations,andtheresultsdemonstrateitssuperiorcharacteristicsintermsofstability,efficiency,andpowerquality. 1.Introduction: Powerinvertersarewidelyusedinvariousapplications,includingrenewableenergysystems,electricvehicles,andindustrialmotordrives.Theefficiencyofaninverterdirectlyaffectstheenergyconversionefficiencyandoverallsystemperformance.Traditionalinverterdesignsoftenfacechallengesinachievingbothhigh-efficiencyandstableoperationundervaryingloadconditions.Thispaperpresentsanewapproachtoaddresstheseissuesbyutilizingcascadedloopcontrolandfeedforwardcompensation. 2.InverterDesign: Theproposedinverterdesignincorporatesacascadedcontrolstructure,consistingofaninnercurrentcontrolloopandanoutervoltagecontrolloop.Theinnercurrentcontrolloopregulatesthecurrentoutput,whiletheoutervoltagecontrolloopensuresthestabilityandaccuracyoftheoutputvoltage.Bydecouplingthecontrolloops,theinverterachievesenhanceddynamicsandimprovedloadregulation. Additionally,thefeedforwardcompensationtechniqueisemployedtofurtherimprovetheinverter'sperformance.Feedforwardcompensationinvolvesmeasuringtheloaddisturbancesinadvanceandintroducingcorrespondingadjustmentstothecontrolsignals.Thisanticipatoryapproachmitigatestheadverseeffectsofloadvariations,resultinginhigherefficiencyandbettertransientresponse. 3.ControlStrategy: Thecascadedcontrolloopsareimplementedusingproportional-integral(PI)controllers.Theinnercurrentcontrolloopprovidesfastandaccuratecurrentregulationthroughfeedbackcontrol.Theoutervoltagecontrolloop,ontheotherhand,ensuresthedesiredvoltagewaveformunderdynamicloadconditions.Thefeedf