上海交大 DSP2812矢量控制系统研究

1、–77–DSP:DigitalSignalProccesor;ADC:Analog-to-DigitalConverterDMA:DirectMemoryAccessMAC:MultiplyandADDCalculateSPI:SerialPeripheralInterfaceCPU:CentralProcessingUnitSCI:SerialCommunicationInterfacePLL:PhaseLockedLogicIPM:IntelligentPowerModuleSPWM:SinePulseWidthModulationSVPWM:SpaceVectorPulseWidthModulationAPI:ApplicationProgrammingInterfaceIDE:IntegratedDesignEnvironmentTI:TexasInstrumentsIR:InternationalRectifierIGBT:InsulatedGateBipolarTransistorVVVF:VariableVoltageVariableFrequencyVC:Vector。

2、ControlDTC:DirectTorqueControl20071182007118–2–TMS320F2812SVPWMSPWM(DSP)(IPM)(SVPWM)DSPPWMCSVPWM–3––4–TheACServoMotorControllerBasedOnTMS320F2812ABSTRACTBecauseofadvancesinnewtypepowerdevicesandpowerfulmicro-processors,variablespeedACinductionmotorspoweredbyswitchingpowerconvertersarebecomingmoreandmorepopular.Newswitchingpowerconverters,alongwithanadvancedmotorcontrolprinciple,offeraneasywaytoregulateboththefrequencyandmagnitudeofthevoltageandcurrentappliedtoamotor.Asaresultmuchhigherefficiency。

3、andperformancecanbeachievedbythesemotordriverswithlessgeneratednoises.ThemostpopularprincipleofthiskindisthespacevectorPWM.SpacevectorPWMreferstoaspecialswitchingschemeofthesixpowertransistorsofa3-phasepowerconverter.Itgeneratesminimumharmonicdistortiontothecurrentsinthewindingsofa3-phaseACmotor.Italsoprovidesmoreefficientuseofsupplyvoltageincomparisonwiththesinusoidalmodulation.ThisdesigndescribesaprototypeofACservomotorcontrollerbasedonpowerfuldigitalsignalprocessor(DSP)andintegratedpowermodul。

4、e(IPM)andSpaceVectorPWMcontrolarithmetic.Thedesignincludeshardwarepartandsoftwarepart.ThehardwareresearchreferstotheDSP–5–signalcollectionandthePWMregulationandthedataprocessing,alongwiththeswitchingpowerinverterof3-phaseACmotorbasedonIPM,whichissuitableformotorcontrol.Astosoftware,theprojectincludesspacevectorPWMprincipleandcurrent-loopfeedbackcontroloftheentiresystem,IdevelopthecorrespondingCcodeanditworksonthesystemproperly.Atlast,thisdesignaccomplishswiththespeedcontroloftheACmotor,andattemp。

5、ttooptimizetheSVPWMprincipleintheory.Inaword,thisdesigntreatsACmotorandpower-supplyasawhole,andfocusesonhowtogenerateroundedmagneticfieldwithinvariablerangeinthemotorwinds.Asaresult,itcanreceivebettercontroleffect.MoreoverthismethodcanimprovetheefficiencyofDCvoltageandminishcurrentharmonic,atthesametimereducetorquedisturbance.Thedesignresultsshowsthatthisprototypeisworkableanduseful.KEYWORDSSVPWM,DSP,IPM,ACinductionmotor–8–1.1[6]DSPPWMSVPWMPWMemP1PSP1emsem(1)PsPPsP=−=(1-1)[6]1.2.–9–3.()()1.22.2.。

6、1[6]200516.81-11-12005[6]()13.21922.615.532.112.541.810.851.58.861.48.370.95.483.319.716.8100–10–[6]67.94%201013002000[6]2.2.21-2–11–1-2[6]3.118.51.710.11.58.91.37.81.27.21.16.50.84.86.136.216.81002.518%25%–12–2.2.3[6]11-3200620072325201-3[6]200516.820200620.723200725.825–13–1.3DSPIPMSVPWM500IPMDSPACIR21363IGBTPWMAD0AD1JTAGMAX232CAPIR2175IR2175100IGBT(6)PCHALLA,B,C(3)EcodeA,B,C(3)1-2Figure1-2ThehardwarestructureofTheSystem1-41-4HCPQ13DSPTMS320F2812TexasInstrumentsIPMIRAMS06UP60BInternationalRect。

7、ifierIR2175InternationalRectifierA4504AgilentC–14–2DSPIPM1-3Figure1-3ThehardwarestructureofTheSystemIRIPMIPMIPMDSPDSPLF2407ASVPWMSPWMSVPWMSVPWM–15–1.41)DSP2PCBPCB2)IPM2PCBPCB3)2AD4)SVPWMPCB312–16–2.1PWMPWM(PulseWidthModulation)PWM62.1.1SPWMut2-1SPWMFigure2-1:ThewaveformofSPWMSPWM(SinusoidalPWM)PWMSPWMPWMSPWMSPWMSPWMEPSUPSSPWM–17–2.1.2SVPWMPWM6PWM3PWM1PWM5PWM2PWM4T1PWMCMPR1CMPR2CMPR3CMPR1CMPR2CMPR3t(001)(011)(101)(100)(110)(010)(000)(111)UUUout6002-2SVPWMFigure2-2:ThewaveformofSVPWMSVPWMPWMSVPWM2。

8、-26PWM2.1.3PWM70805kHzPWMPWM()IGBTPWMPWM[10]–18–2.1.4(VVVF)VVVF(VariableVoltageVariableFrequency)PWMVVVFVVVF2.1.5VCImIt(ImIt).2.1.6(DTC)1985Depenbrock(DirectTorqueControlDTC)Band-BandPWM–19–ABBDTC5[14]2.1.72-12-1SPWMSVPWMPWMVVVFDSP–20–VC1:10006DTCPI13PWMSVPWMSVPWMSVPWM–21–2.2PWMSpaceVectorPWMSVPWMSVMSVPWMPWMSVPWM2.2.1SVPWM/d-qIaIbIc/Ia1Ib1Im1It1(Im1It1)SVPWMDSP2-3VaVbVcQ1Q2…Q66IGBTabca′b′c′Q1Q2aa′abc8–22–dcUaVbVcVQ1Q5Q3Q2Q4Q6abc′a′b′c2-3Figure2-3:3-phasepowersupplyinverter82-286260U0U120U180U240。

9、U300U(001)(011)(101)(100)(110)(010)000O(000)111O(111)qd1U2UoutU2-4:Figure2-4:VoltagespacevectorsxU60xU±000OoutU1T2T0TPWMTPWM–23–16020000****xoutPWMxUTUTOTUT±++=2-1120PWMTTTT++=2-2SVPWMU(001)U(011)2-5,PWM1PWM3PWM5PWM5PWM3PWM1U(000)U(001)U(011)U(111)U(111)U(011)U(001)U(000)0T/40T/40T/40T/41T/21T/22T/22T/22-5:SVPWMFigure2-5:ThewaveformofSVPWMSVPWMPWM2-6SPWMUVU-V2-6:Figure2-6:Thewaveformofoutputvoltage–24–[abc][caabbcVVV]2-1dcVabbcdccaV1-10aV=V01-1bV-101c(2-1)[abc][acbV。

10、VV]2-2abdccV2-1-1a1V=V-12-1b3V-1-12c(2-2)2-2a,b,cabcabcabbccaVVVVVV00010011001001100110111100010-101-1-110-1010-111-100000000002/3-1/3-1/31/31/3-2/3-1/32/3-1/3-2/31/31/3-1/3-1/32/31/3-2/31/32-2[abc]8dcVaV=2/3aV=2/3dcV(SPWM)(SVPWM)dcV–25–32-1112211332233222233022abcdqababcbccT−−−−−−(2-3)2-7620U60U120U180U240U320U000O111O660860U0U120U180U240U300U(001)(011)(101)(100)(110)(010)000O(000)111O(111)qd1U2UoutU1162203203−1162。