ti 数字电机控制解决方案演示new

《ti 数字电机控制解决方案演示new》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、TIDigitalMotorControlSolutionsTIDigitalMotorControlSolutions©TexasInstrumentsIncorporated2005NoreproductionpermittedwithoutpriorauthorizationfromTexasInstruments.SPRB167A1H2004–Slide1AgendaTimeline•MotorControlFundamentals25min–ACInductionandPermanentMagnetMotors–Scal

2、arandVectorControl•Applications:Smartercontrollers,highperformance,lowercost15min•ControllerSelection10min•MotorControlCollateralOverview25min–DevelopmentToolsOverview:FasterHW+SWDevelopment–ModularSoftwareLibraries:DevelopmentAccelerators–IncrementalBuildTechnology:E

3、asyDeployment•Completingthesignalchain:TIAnalogandCommunications25min•GetStartedTodaywithTI!5min•QuestionandAnswers10min1H2004–Slide2ThreePhaseMachineFundamentalsConceptualPractical•Threephasemachineshavethreewindings,separatedinphaseby120°-athirdofarotation.1H2004–Sl

4、ide3ThreePhaseMachineFundamentalsiaA`Fc•ThethreephasewindingCBproducesthreemagneticfields,whicharespaced120°FaCapartphysically.FbB``•WhenexcitedwiththreesineAwavesthatarea120°apartinPhasecurrentsphase,therearethree1.50iaibicpulsatingmagneticfields.1.000.500.00ωt•There

5、sultantofthethree124477093116139162185208231254277300323346-0.50magneticfieldsisarotating-1.00-1.50magneticfield.1H2004–Slide4ThreePhaseMachineFundamentalsq(imaginary)120fSpeed(inr.p.m.)=PiaA`f=ACsupplyfrequency,andP=#ofpolesforthemotor,perphaseCFcBωd(real)FaForinstan

6、ce,a3phaseFsmachine,with:C`60HzThreePhaseFbFF$=.ejtωSupply;and4polesperB`ssphasewillhaveaAFF$=+jFsynchronousspeedofsdq1800r.p.m.oooFF$=+sin(t).ei0Fsin(t+oi).e120+Fsin(t+oi).e240ωω120ω240sabc1H2004–Slide5PermanentMagnetMotorOperationRotorfieldA`φBackFCEMFNt(v)BStatortC

7、`CurrentSStatorfieldF(Is)B`A•Theinteractionbetweentherotatingstatorflux,andtherotorfluxproducesatorquewhichwillcausethemotortorotate.•Therotationoftherotorinthiscasewillbeatthesameexactfrequencyastheappliedexcitationtotherotor.•ThisisanexampleofSynchronousoperation.1H

8、2004–Slide6InternalView:InductionMotorRotor1H2004–Slide7ACIOperationFundamentalsiaA`Phasecurrents1.50iaibic1.00ImCB0.50~FωIC