无刷双馈电动机标量控制系统研究

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1、ABSTRACTBrushlessDoubly-FedMachine(BDFM)isanewACmotorwhichhasthecommonfeaturesofbothasynchronousandsynchronousmotors.BDFMnotonlyhastheruggedconstruction,highreliabilityandsimplemaintenancework,butalsocanachievethedoublyfedoperationinbrushlessconditions.BDFMhasabroadapplicationp

2、rospectinvariablefrequencydrivesystemandvariablespeedconstantfrequencypowersystemwhichhasadvantagesofadjustablepowerfactor,smallinvertercapacity,lowsystemcostandsoon.ThemainworkforthestudyofBDFMcompletedinthispaperisasfollows:Firstly,basicresearchhasbeendonethroughtheacquaintan

3、ceofthedevelopmenthistoryofBDFMandtherelatedliterature.ThestructuralcharacteristicofdifferentrotorBDFMhasbeenanalyzedandcomparedinthispart,whichhasalsopresentedtheprinciplesofvariablespeed.Theformulaofmotorspeedandtheassociationbetweenthepowerfrequencyandthepowerflowofpowerwind

4、ingandcontrolwindingunderdifferentworkingconditionshavebeenderived.Secondly,amath-modelofBDFMunderthestaticabccoordinatesystemhasbeensetupbasedonthemotortheory.Themodelhasbeenfurthersimplifiedandthetwo-phasedqmodelinrotor-speedrotationcoordinatesystemhasbeenderivedbyusingthecoo

5、rdinatetransformation,whichlaysthebasisforthesubsequentsimulationwork.Byfrequencyconversion,thecurrentfrequenciesinallwindingshavebeenunifiedintopower-windingfrequency.Ithasacquiredthesteadystateequivalentcircuitandphasor-diagramofBDFMundersteadystate.Allabovesetsupthetheoretic

6、albasisforscalarcontrolstrategyofBDFM.Finally,thescalarcontrolstrategyforBDFMhasbeenpresented・Itexpatiatestheprincipleofscalarcontrolalgorithmindetailandpresentsthediagramofthesystem.ThesimulationmodelofthecontrolsystemhasbeenbuiltupbyusingtheMATLAB/Simulinktoolbox.Thecontrolal

7、gorithmforBDFMhasbeenverifiedanditpresentstheresultsofsimulationunderdifferentoperationconditions-Inaddition,thehardwaredesignrelatedtothecontrolsystemhasbeendoneandthedebuggingworkofhighfrequencyPWMrectifierhasbeenfinished,andrelatedwaveformresultshasbeenpresentedinthelastpart

8、.Keywords：BrushlessDoubly-FedMachine(BDFM)adjustablesp