1、廣東工業(yè)大學(xué)碩士學(xué)位論文無刷雙饋電機(jī)變結(jié)構(gòu)直接轉(zhuǎn)矩控制姓名：劉遠(yuǎn)濤申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：控制理論與控制工程指導(dǎo)教師：楊俊華20100601ABSTRACTABSTRACTTheBrushlessDoublyFedMachine(BDFM)isasingleframe，selfcascadedinductionmachinecapableofoperatinginboththeinductionandtheasynchronousmod

2、eBDFMhastherobustmechanicalcharacteristicstogetherwithcontrollablepowerfactorgoodspeedcharacteristics，alowpowerconverteranddiversiformrunmodeThereforeitisespeciallysuitablefortheACdrivesystemandgeneratingsystemofwindpowe

3、randwaterpowerFirstly，theoperationprinciple，variousoperatingmodeandsteadystateequationarestudied，thenpowerflowsareanalyzedbaseonsteadystateequationDerivationdqmathematicalmodelSimulationmodelofBDFMfortheopen—loopsystemis

4、establishedunderMatlab／SimulinkLaboratoryexperimentalsystemunderopenloopverifydifferentoperationmode’SdynamicperformanceforBDFMSecondly，DirectTorqueControl(DTC)，whichhasbeendevelopedaftervectorcontrolinrecentyears，isanew

5、technologyindomainofACdriversWeightedmodeliSdesignedunderthreeestimationmodelsofthestatorfluxThesimulationmodelofBDFMDTCsystembasedonuifluxmodeIiSbuildbetterperformanceofBDFMDTCsystemisverifiedbyobservingwaveformUsingswi

6、tchingcharacteristicwhichcausesthesystem“structure”tochangewithtime，slidingmodelvariablestructure(SMVS)controlstrategyforBDFMwasproposedteducethefluxandtorquerippleofBDFMbasedondirecttorquecontrolsystemTwohysteresisregul

7、atorsintheconventionalDTCsystemweresubstitutedbythefluxandtorqueSMVScontrollerTheoutputofSMVScontrollersmakesspacevectorPWMmodulation，whichensuresinverterswitchingfrequencytobefixedAccordingSlidingmodelvariablestructurec

8、ontroltheorytOestablishedsimulationmodelofDTCunderMatlab／SimulinkThesimulationresultsshowedthatcontrolmethodcanreducethetorqueandstatorflux，thestabilityandrobustperformanceofthesystemcanbeenhancedFinally，Thedecoupledcont

9、rolofactivepowerandreactivepowerinBDFMisakeytechnologyofvariablespeedconstantfrequency(VSCF)windenergygenerationsystemByanalyzingthefield—orientedcontrolscheme，slidingmodecontrol(SMC)andproportional—integral(PI)controlar