永磁同步电动机直接转矩控制技术的研究

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1、哈尔滨理工大学硕士学位论文永磁同步电动机直接转矩控制技术的研究姓名：聂天适申请学位级别：硕士专业：电力电子与电力传动指导教师：高晗璎20080301哈尔滨理工大学T学硕fj学位论文StudyOilDirectTorqueControlTechnologyforPermanentMagnetSynchronousMotorAbstractAsthefastdevelopmentofthemotorproductiontechnology,powerelectronicsandmicroelectronics，ser

2、vocontrolsystemhasbeenusedinthefieldofindustrialcontrolandhouseholdapplianceswidely,andACservocontrolsystemhasbecomeadevelopmenttrendofservocontrolsystem．Therefore，tostudythefull·digitalpermanentmagneticsynchronousACservocontrolsystemwhoseexecutivemotorisperm

3、anentmagneticsynchronousmotor,corecomponentisDSP,andcontrolstrategyisdirecttorquecontrolhasaparticularlyimportantpracticalsignificance．Someresearchandameliorationondirecttorquecontrolsystemofpermanentmagnetsynchronousmotorhasbeendoneinthisdissertation．DirectT

4、orqueControl(DTC)isanoveltechnologyoffrequencyconversionafterthevectorcontrolinthefieldofACdrivesystems．ConventionalDTChassomeadvantages，suchaseasyimplementation，fastresponseandlesseffectofmotorparameters’change，SOabetterdynamicperformancecanbeobtained，butsom

5、elargeripplesoftorquealsoexist．AimingattheshortcomingsofconventionalDTC，basedontheprincipleofspacevectorPWMcontrol，anoveldirecttorquecontrolsystembasedonspace-voltagevectorpulsewidthmodulation(SVPWM)iSproposedinthisdissertation．TheSVPWMcanhelptheinvertertorea

6、lizecontinuousvoltagevectormodulation，decreasethecurrentharmoniccomponent，andrestrainthetorqueripples，SOthecontrolperformanceofthesystemcanberaised，atthesametime，theDCbusvoltageutilizationcanbeimprovedandthespeedrangeofthesystemcanbeexpanded．Basedonthetheoret

7、icalanalysisof3-phasePMSM，amathematicalmodelofPMSMandthesimulationmodelofpermanentsynchronousmotorsystembasedonDTChavebeenbuilt；furthermore，alOtofsimulationresearcheshave．11．哈尔滨理T人学T学硕}j学位论文beendonebasedonthesemodels．Todesignthecontrolsystem，thedigitalsignalp

8、rocessorTMS320F2812producedbyTICompanyisusedaskernelcontrolchip，andplentifulexperimentaltestshavebeendone．Thesimulationandtheexperimentresultsshowthatthepermanentmagnetsynchronousmotorsys