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)wheretheSRGsystemoperatesatsuf?cientlyhighspeedTheSRMproducestorquethroughexcitationthatissynchro-thatitoperatesinthesin

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

4、erationistodevelopaneasilyimplementablecontrolalgorithmthatabovebasedspeed,currentregulationisnotpossibleandθonautomaticallymaintainsthemostef?cientexcitationanglesinandθo?aretheonlytwocontrolparametersthatprescribetheproducingtherequiredamountofelectricpower.Theworkiscurrentwaveform.A

5、controlalgorithmwouldtypicallyusethefocusedon?ndingthemostef?cientexcitationanglesandchar-sameexcitationparametersforeachphase,implementedwithacterizingthemforeasyimplementionunderclosedloopcon-thespatialshiftconsistentwiththesymmetricallydisplacedtrol.ThroughmodelingofanexperimentalSR

6、Gandextensivephasestructure.Controloftheexcitationanglesresultsinei-simulation,itcanbeseenthattheoptimal-ef?ciencyturn-offtherpositivenettorqueformotoring,ornegativenettorqueforanglescanbecharacterizedasafunctionofpowerandspeedgenerating.level.Withintheclosed-looppowercontroller,theopt

7、imal-ControloftheSRMismorecomplicatedforgeneratoroperationef?ciencyturn-offangleisdeterminedfromananalyticcurvethanitisformotoroperation.Operatingasamotor,theturn-?t.Theturn-onangleisthenusedasthedegreeoffreedomnec-onanglecanbeusedtodirectlycontrolthepeakphasecurrent,essarytoregulate