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1、1ANewControlMethodofPermanentMagnetGeneratorforMaximumPowerTrackinginWindTurbineApplicationR.Esmaili,StudentMember,IEEE,andL.Xu,Fellow,IEEEandD.K.Nichols,Member,IEEEInavariablespeedPMGsystem,avectorcontrolapproachisAbstract—Thispaperdiscussesanewandsimplecontro
2、loftenemployedtoachievenearlydecoupledactiveandmethodformaximumpowertrackinginavariablespeedwindreactivepowercontrolonthesupplysidepowerconverter,turbinebyusingastep-updc-dcconverter.Theoutputvoltageofwhichisacurrentregulatedvoltagesourceinverter.Inthispermanen
3、tmagnetgeneratorisconnectedtoafixeddc-linkthroughathree-phaserectifierandthedc-dcconverter.Away,thepowerconvertermaintainsthedc-linkvoltageandmaximumpower-trackingalgorithmcalculatesthespeedimprovespowerfactorofthesystem[4][5][9].Differentcommandthatcorresponds
4、tomaximumpoweroutputofthecontrolmethodsformaximumpowertrackinginvariableturbine.Thedc-dcconverterusesthisspeedcommandtocontrolspeedwindturbinegeneratorshavebeendiscussedintheoutputpowerofthepermanentmagnetgenerator,suchthat[5][6][7].thespeedofgeneratortracksthe
5、commandspeed.AcurrentregulatedPWMvoltagesourceinvertermaintainstheoutputThisstudypresentsanewcontrolapproachandtherelatedvoltageofdc-dcconverteratafixedvaluebybalancingtheinputpowerconvertertopologytotrackthemaximumpowerandoutputpowertothedc-link.Inaddition,the
6、invertercanwithoutmeasuringwindorgeneratorspeed,whichisofgreatimprovepowerfactorandinjectacurrentwithverylowimportanceforsmallsizeandlowcostwindturbines.Usingharmonicdistortionintotheutilitygrid.Thegeneratingsystemhaspotentialsofhighefficiency,goodflexibility,a
7、ndlowcost.PSIMsoftwaresimulation,thecircuittopologyandcontrolmethodofthewindpowergeneratingsystemisinvestigatedIndexTerms—dc-dcconverter,Maximumpowertracking,withaPMGandaback-to-backac-dc-acpowerconverter.Permanentmagnetgenerator,PWMinverter,Speedcontrol,Alsoin
8、cludedintheinvestigationisthewindturbine’sVariablespeedwindturbine.dynamics.Thepaperisorganizedasfollows:insectionIIaerodynamiccharacteristicsofturbineandprinciplesofI.INTRO