基于DSP的全数字直接转矩控制系统的研制与开发

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1、河北工业大学硕士学位论文基于DSP的全数字直接转矩控制系统的研制与开发姓名：张欣申请学位级别：硕士专业：控制理论与控制工程指导教师：王宏文20050301基于DSP的全数字直接转矩控制系统的研制与开发RESEARCHANDDEVELoPMENTOFDIRECTTORQUECONTROLSYSTEMBASEDoNDSPABSTRACTInthefieldofACmachinescontr01．astrategycalled．variablefrequencycontr01ismostlyused．Asahighperformanceandnewmachinesco

2、ntrolstrategydevelopedin1980’s．directtorquecontr01solvestheproblemsthatcomputationinvectortrailsfotinationcontroliscomplex，thecontrolcharactersareeasilyaffectedbythechangesinmachinesparameters，realresultsoftheexperimentscan’tachievemelevelofthetheoreticalanalysis．InthisPapetconsidere

3、dthedevelopingactualitythatmoretheoreticalresearchbutlesssystematicrealizationliesinthefieldofdirecttorquecontrolsystem，weputtheemphasisonthebasicrealization，anddesignasetofintegratesystemincludingsoftwareandhardware，whichcallrealizedirectcontroltheory．Firstly,accordingtothemathemati

4、calmodelofasynchronousmachinesandtheprincipleofvariablefrequencycontrol，fromsimpletocomplication，wedebugthepartofthehardwiredconnectionbymeansofSPWMmethodeasilyrealized．Secondly,accordingtothetraditionaltheoryofDTC．weanalyzetheapproximateroundfluxtheoryofDTCintheexperiment．Usingmetho

5、dofvoltagevectorselection，wecanselectthepropervoltagevectorbythepositionandmagnitudeofstatorfluxaswellasthemagnitudeoftorqHe．BecausedirecttorquecontrolrequiresveryhighpeffomaanceofReal-time，thepopularmicrocomputercoreDSPiSusedascontrollerinthedesignofhardware．Itshighspeedofrtmningiss

6、uitablefortlleexperiment．Inthemaincircuit．thereisahighlyintegratedpowerelement：IPMasinverter,whichincludessevenIGBT’hashighswitchfrequencyandfaultdiagnosisfunction．IPMgreatlydecreasesthebulkofsystemKEYWORDS：directtorquecontrol，voltagevector，approximateroundflux，SPWM，DSP,IPM基于DSP的全数字直

7、接转矩控制系统的研制与开发符号说明DSR，DTC——直接转矩控制。DSP--数字信号处理器。IPM——智能功率模块。PwM——脉宽调制。G1D——可关断品闸管。IGBT_一绝缘栅双极品体管。PI——比例积分。A，D——模拟／数字。I／o～输入，输出。Ev——事件管理器。SVPwM一空间矢量脉宽调制。M——电动机。R。、R，——电机定、转子电阻，欧姆(Q)。‰、屯、i，。、f。、“、j。——分别为定子和转子的A、B、C坐标系下相电流分量，安培(A)。％、以。、U、吒、％、‰一分别为定子和转子的A、B、C坐标系下相电压分量，伏特(V)。‘。、k、f，。、k——分别为

8、定子和转子电流的d、口坐