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1、ACTIVE-POWER-FILTER-FOR-POWER-COMPENSATION：电力有源电力滤波器补偿-PPT课件ACTIVE-POWER-FILTER-FOR-POWER-InthisPresentation,anewActivePowerFilter(APF)controlschemehasproposedtoimprove the performance of the APF. This presentation presents a new technique withinstantaneouspowertheory(P-Qtheory)inordertocontrolofAPF
2、undernon-idealmainsvoltage conditions. Performance of the proposed scheme has been found feasible andexcellenttothatoftheinstantaneousreactivepoweralgorithmsundervariousnon-idealmainstestscenarios.MATLAB/SIMULINKpowersystemtoolboxisusedtosimulatetheproposedsystem.Theproposedmethodsperformanceiscompa
3、redwithconventionalinstantaneouspower (P-Q) theory. The simulation results are presented and discussed showing theeffectivenessofthecontrolalgorithm.InthisPresentation,aINTRODUCTIONPOWERQUALTITYINPOWERDISTRIBUTIONSYSTEMSSOLUTIONSTOPOWERQUALITYPROBLEMSBASICPRINCIPLEOFACTIVEPOWERFILTERSTYPESOFTHEACTIV
4、EPOWERFILTERSINSTANTANEOUSPOWERTHEORYTHEPROPOSEDMETHODSHUNTACITVEPOWERFILTER3-PHASE4-WIRESHUNTACIVEPOWERFILTERWITHRENEWABLEENERGYINTERFACESIMULATIONRESULTSCONCLUSIONREFERENCEINTRODUCTIONCONTENTSInamodernpowersystem,increasingofloadsandnon-linearequipmentshavebeendemandingthecompensationofthedisturba
5、ncescausedforthem.Thesenonlinearloadsmaycausepoorpowerfactorandhighdegreeofharmonics.ActivePowerFilter(APF)cansolveproblemsofharmonicandreactivepowersimultaneously.APFhavetheabilitytoadjusttheamplitudeofthesynthesizedacvoltageoftheinvertersbymeansofpulsewidthmodulationorbycontrolofthedc-linkvoltage,
6、thusdrawingeitherleadingorlaggingreactivepowerfromthesupply.ShuntAPFsallowthecompensationofcurrentharmonicsandunbalance,togetherwithpowerfactorcorrectionINTRODUCTIONInamodernpowerPowerQualitycanbedefinedasthephysicalphysicalcharacteristicsoftheelectricalsupplyprovidedundernormaloperatingconditionsth
7、atdonotdisturbthecustomersprocess.PowerQualityproblemexistsduetochangeinvoltage,currentorfrequencydeviationresultsinafailureorinabadoperationoftheequipment.PowerQualityproblemsareduetoNaturalPhenomenaSwitchingPhenomenaConnectionofhighpowernonlinearloadsVoltageSagsPowerQualitycanbedefinedaTherearetwo
8、approachestothemitigationofpowerqualityproblems.LoadConditioningLineConditioningAflexible andversatile solution tovoltagequality problems isoffered byActive Power Filters.ShuntactivepowerfiltersoperateasacontrollablecurrentsourceseriesactivepowerfiltersoperatesasacontrollablevoltagesourceActive Filt
9、er ConnectionLoad on AC SupplyAC Supply On LoadShuntCurrentHarmonicFiltering.Reactivecurrentcompensation.Currentunbalance.VoltageFlickerSeriesCurrentHarmonicFiltering.Reactivecurrentcompensation.Currentunbalance.VoltageFlickerVoltageUnbalanceVoltageSag/Swell.VoltageUnbalance.VoltageDistortion.Voltag
10、eInterruption.VoltageFlickerandnotching.Therearetwoapproachestoth3phaseuncontrolleddiodebridgerectifierwithresistiveloadingUsingtheswitchingmodepowerconvertertoperformtheharmoniccurrentelimination.Thepowerconverteriscontrolledtogenerateacompensationcurrent,whichisequalbutoppositetheharmonicandreacti
11、vecurrentsgeneratedfromthenonlinearload.AvoltagesourceinverterhavingIGBTswitchesandanenergystoragecapacitoronDCbusisimplementedasashuntAPF.Fig.BlockDiagramofAPF3phaseuncontrolleddiodebrid1.Shunt Active Power Filters:Itcompensatecurrentharmonicsbyinjectingequal-but-oppositeharmoniccompensatingcurrent
12、.Itoperatesasacurrentsourceinjectingtheharmoniccomponentsgeneratedbytheloadbutphaseshiftedby180deg.Fig. Compensation characteristics of a shunt active power filter ShuntActivePowerFilters:TYP2.Series Active Power Filters:Fig.SeriesactivepowerfiltertopologyItcompensatecurrentsystemdistortioncausedbyn
13、on-linearloads.ThehighimpedanceimposedbytheseriesAPFiscreatedbygeneratingavoltageofthesamefrequencythatthecurrentharmoniccomponentthatneedstobeeliminated.Voltageunbalanceiscorrectedbycompensatingthefundamentalfrequencynegativeandzerosequencevoltagecomponentsofthesystem.2.SeriesActivePowerFilte3.Hybr
14、id Active Power Filters:Fig.HybridActivepowerfilterBy controlling the amplitude of the voltage fundamental component across the couplingtransformer,thePFofthepowerdistributionsystemcanbeadjusted.Thecontroloftheloadpowerfactorimposedahighervoltageacrossthefiltercapacitor.Thistypeofconfigurationisvery
15、convenientforcompensationofhighpowermediumvoltagenonlinearloadsHybridActivePowerFilters:FiInthree-phasecircuits,instantaneouscurrentsandvoltagesareconvertedtoinstantaneousspacevectors.Three-phasecurrentsandvoltagesarecalculatedasfollowingequationsInthree-phaseconventionalinstantaneouspoweriscalculat
16、edasfollows:P=e.i+e.iInfact,activepower(p)isequaltofollowingequation:P=ea.ia+eb.ib+ec.ic andareorthogonalcoordinates.Inthree-phasecircuits,instaInstantaneousrealandimaginerpowersarecalculatedasequationTheaboveequationcanbewrittenasFromaboveinstantaneouscompensatingcurrentasandCoordinatesaregivenbelo
17、w InstantaneousrealandimagineItmustbeusedwhenthevoltagesaredistortedorunbalancedandsinusoidalcurrentsaredesired.Inproposedmethod,instantaneousvoltagesarefirstconvertedto-coordinatesandthentostationaryd-qcoordinates.Theproducedd-qcomponentsofvoltagesarefilteredandreverseconverted-coordinates.Thesefil
18、tered-componentsofvoltagesareusedinconventionalinstantaneouspowertheory.PROPOSEDMETHODItmustbeuseSCHEMATICDIAGRAMOFSHUNTAPF3-Phase4-WireShuntActivePoBLOCKDIAGRAMOFSHUNTAPFWITSIMULATIONRESULTSAnewAPFcontrolschemehasbeenproposedtoimprovetheperformanceofAPFundernon-idealmainsvoltagescenarios.Experiment
19、alresultsinascaled-downlaboratoryprototypewillbedoneandreportedinfuturepaper. APF,basedontheproposedtheory,givesatisfactoryoperationevenwhenthesystemphasevoltagesareunsymmetricalanddistorted,becausenodistortionappearsinthelinecurrents.TheAPFisfoundeffectivetomeetIEEE519standardrecommendationsonharmo
20、nicslevelsinallofthenon-idealvoltageconditions.Theswitchingfrequencyandalsoswitchinglossesarereduced%23inproposedmethodAnewAPFcontrolscheEnginzdemir,Member, IEEE, Murat Kale, Sule zdemir., “ActivePowerFilterforPowerCompensationUnderNon-IdealMainsVoltages”LuisA.Morn,JuanW.Dixon.,-“Usingactivepowerfil
21、terstoimprovepowerquality”Akagi,H.,Kanazawa,Y.,andNabae,A.,“Instantaneousreactivepowercompensatorscomprisingswitchingdeviceswithoutenergystoragecomponents.IEEE Transactions on Industrial Applications, Vol.20, pp. 625- 630, 1984.Singh,B.,HaddadK.,Chandra,A.,“ANewControlApproachtoThree-PhaseActiveFilterforHarmonicsandReactivePowerCompensation,IEEE Trans. on Power Systems, Vol.13, No.1, pp. 133-138, 2019.Enginzdemir,Member,IEEE,MTHANKYOU感谢聆听
