Transcription of Sensored 3-Phase BLDC Motor Control Using …
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ApplicationReportSLAA503 July2011 Sensored3-PhaseBLDCM otorControlUsingMSP430 BhargaviNisarga, ( bldc )motorsareelectronicallycommutatedm otorsthatoffermanyadvantagesoverbrushedD Cmotorsand,therefore, sensored3- phasebldc motorcontrolsolutionusingMSP430 : (OneElectricalCycle)..44 Flowchart (PIController)..119 Flowchart C a ,ExcelareregisteredtrademarksofMicrosoft Corporationin July2011 Sensored3-PhaseBLDCM otorControlUsingMSP430 SubmitDocumentationFeedbackCopyright 2011,TexasInstrumentsIncorporatedSpeed ControlInputMSP 430 Open Loop ControlMotor (rotor)anda fixedarmature(stator).Anelectroniccontro lleris usedformotorcommutationinsteadofthebrush edcommutationusedin ,whichincludeincreasedspeedvstorqueeffic iency,longerlife(asnobrushesareused),noi selessoperation,andincreasedefficiencyin convertingelectricalpowertomechanicalpow er(especiallybecausetherearenoelectrical andfrictionallossesduetobrushedcommutati on).Themotorcommutationin bldc motorsis implementedbyanelectroniccontrollerand,t odeterminetherotorpositionandtoknowwhent ocommutate,eitherHallsensors(sensoredcom mutation)orthebackEMFgeneratedin thestatorwindingsofthemotor(sensorlessco mmutation) ,asnobackEMFis presentwhenthemotorisstationary;thisis workedaroundbystartingthemotorfromanarbi traryposition;however, , bldc motorsareavailablein 1-phase,2-phase, typicalHallsensored3- phasebldc motorcontrolis discussedin a simplecontrolsystemin whichthesystemdoesnottrackt
Application Report SLAA503–July 2011 Sensored 3-PhaseBLDC Motor Control Using MSP430 Bhargavi Nisarga, Daniel Torres.....
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