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1、2011SecondInternationalConferenceonIntelligentSystemDesignandEngineeringApplication2012InternationalConferenceonIntelligentSystemsDesignandEngineeringApplicationApplicationofFuzzyControlinHarmonicDetectingandCurrentControlofAPFLiuXinyang,WangJie,YaoGangShanghaiJ
2、iaoTongUniversityofElectricalEngineering,Shanghai,200240,Chinalxysomeday.sr@gmail.comAbstract—Theactivepowerfilter(APF)iswellknownasavaluesofthecurrentareevaluatedbysimulationtoolharmonicsuppressorandreactivepowercompensatorwithMatlab/Simulink.Finally,Section6co
3、ncludesthispaper.thebestperformanceinthepowersystemrecently.Basedonfuzzycontrollogic,thispaperpresentsavariablestep-sizeII.THESTRUCTUREANDBASICPRINCIPLEOFAPFdigitallow-passfilteralgorithmwithfuzzyself-tuningfactor,aswellasanovelhysteresiscurrentcontrolstrategywi
4、thfuzzyA.TheStructureofAPFbandwidth.Asforharmonicdetectingcircuit,thefuzzyThestructurediagramofactivepowerfilterisshowninregulatorusingnon-uniformquantizationruleistakenFig.1.TheAPFisconnectedtopowergridatthepointofadvantagestoonlineadjustLPF’sstepparameters,sot
5、hatcommoncoupling(PCC)throughthreephaseinductors.constantlychangecut-offfrequency;andforcurrentcontroliunit,aninternalfuzzycontrollerisdesignedtodynamicallysEsiLadjusttheloopwidthofhysteresiscomparatordeviceinorderNon-lineartolimitingtheswitchingfrequencyofpower
6、switches.Finally,loadstheharmoniccompensatingefficiencytothetypicalnon-linearicloadsoftheapproachpresentedisfurtherverifiedbythesimulationresultsinthispaper.HarmonicMaindetectingKeywords-activepowerfilter;fuzzycontrollogic;digitallow-electriccircuitcircuitpassfi
7、lter;hysteresis*icAPFI.INTRODUCTIONDrivecircuitCurrentcontrolunitInrecentyears,powerqualityproblemshavereceivedconsiderableattentioninelectricdistributionsystems,asaresult,manypowerqualitystandardswereproposed,suchasFigure1.ThestructureofAPFtheIEEE519-1992,IEEES
8、td.141-1993,IEEEStd.1159-1995andIEC1000-3-2,etc.(1-3).AmongallofthepowerThegeneralperformanceofAPFismainlydeterminedqualityproblems,harmoniccontaminationandreactiveby
