独立运行的风力发电系统.ppt

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1、TheResearchofStand-aloneDFIGSystemsandIt'sControlStratagyOutlineApplicableoccasionsandsystemcomponentsTheresearchoffixed-pitchwindturbineVectorcontrolstrategiesbasedonstator-fluxorientationSimulationApplicableoccasionsandsystemcomponentsApplicableoccasions:Stand-alonewindpowersystemsar

2、egenerallyusedinremoteareaswherearenotcoveredbytheconventionalpowergrid.Inadditiontoregulargrid,weshouldpromotestand-alonewindpowersystemsvigorouslyandsupplythepowerofdailylivesandproductionforremotearearesidents(suchasremoterural,pastoralarea,islandandsoon).remoteruralApplicableoccasi

3、onsandsystemcomponentsAdvantagescomparedwithgeneralwindpowergeneration:Highmobility;b.Diversificationofenergyuse;c.Easyinstallation.IslandpastoralareaApplicableoccasionsandsystemcomponentssystemcomponentsDuetothecharacteristicsofthewindenergyinstability,forthestablepowersupplytotheregi

4、onalload,windpowergenerationsystemisoftencombinedwithotherformsofenergysuchassolarenergy,fuel,oraddingenergystoragedevices(batteries,flywheelsandsoon),whichcanstoreupthewindenergy.Whenwindenergyisinsufficient,energystoragedevicessupplytotheloadstogetherwithwindpowergenerationsystem.sto

5、ragebatteryCominedenergysupplysystemsApplicableoccasionsandsystemcomponentsStructureofstand-aloneDFIGsystemsoffgridTheresearchoffixed-pitchwindturbineWindturbinesaretheprimaryenergyconversionpartsinwindpowergenerationsystemi.Itsusedtointercepttheairflowingwiththekineticenergy,andthepar

6、tofthekineticenergyofwindturbinebladeswindsweptareaisconvertedintomechanicalenergy.Itnotonlydeterminestheeffectiveoutputpowerofthewindpowergenerationsystem,butalsodirectlyaffectingthesafetyofthecrewandstableoperation,whichisoneofthekeycomponentsinthewindpowergenerationsystem.Accordingt

7、otheaerodynamics,theinputpowerofthewindturbine::airdensity:airflowthroughthecross-sectionalareaofthewindwheelinunittime:windSpeedTipspeedratio:ω：bladerotationangularspeedTheresearchoffixed-pitchwindturbineMechanicalpoweroutputofthewindturbine:R：bladeradiusCp：Windenergyutilizationfact