Closed loop control of excitation parameters for high speed switched reluctance generators

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1、ClosedLoopControlofExcitationParametersforHighSpeedSwitched-ReluctanceGeneratorsYilmazSozerDavidA.TorreyAdvancedEnergyConversion,LLC31OntarioStreetCohoes,NY12047USAAbstractenergyapplicationischaracterizedbylowspeed,hightorqueoperation.Standardreferencesontheswitched-reluctancema-chine(

2、SRM)aregivenin[9,10];controloftheSRGisdis-Thispaperpresentsanewapproachtotheautomaticcontrolcussedin[11].ofexcitationparametersfortheswitched-reluctancegenerator(SRG)wheretheSRGsystemoperatesatsufficientlyhighspeedTheSRMproducestorquethroughexcitationthatissynchro-thatitoperatesinthesin

3、glepulsemode.Theturn-onandturn-nizedtorotorposition.Theexcitationisgenerallydescribedoffanglesarethetwoparametersthroughwhichwecancon-bythreeexcitationparameters:theturn-onangleθon,theturn-troltheelectricpowergeneration.Theobjectiveoftheworkoffangleθoff,andthereferencecurrentIref.Withop

4、erationistodevelopaneasilyimplementablecontrolalgorithmthatabovebasedspeed,currentregulationisnotpossibleandθonautomaticallymaintainsthemostefficientexcitationanglesinandθoffaretheonlytwocontrolparametersthatprescribetheproducingtherequiredamountofelectricpower.Theworkiscurrentwaveform.A

5、controlalgorithmwouldtypicallyusethefocusedonfindingthemostefficientexcitationanglesandchar-sameexcitationparametersforeachphase,implementedwithacterizingthemforeasyimplementionunderclosedloopcon-thespatialshiftconsistentwiththesymmetricallydisplacedtrol.ThroughmodelingofanexperimentalSR

6、Gandextensivephasestructure.Controloftheexcitationanglesresultsinei-simulation,itcanbeseenthattheoptimal-efficiencyturn-offtherpositivenettorqueformotoring,ornegativenettorqueforanglescanbecharacterizedasafunctionofpowerandspeedgenerating.level.Withintheclosed-looppowercontroller,theopt

7、imal-ControloftheSRMismorecomplicatedforgeneratoroperationefficiencyturn-offangleisdeterminedfromananalyticcurvethanitisformotoroperation.Operatingasamotor,theturn-fit.Theturn-onangleisthenusedasthedegreeoffreedomnec-onanglecanbeusedtodirectlycontrolthepeakphasecurrent,essarytoregulate