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1、AbridgmentofTheReactancesofSynchronousMachines1BYR.H.PARK*andB.L.ROBERTSONAssociate,A.I.E.E.Associate,A.I.E.E.Synopsis,—Untilsomewhatrecently,synchronousmachinereactanceandthevariationinthislatterquantity,dependingupontheoryhasbeensatisfiedwitharelativelyfewcharacteris
2、ticconstants,whethercurrentorvoltageisimpressedonthemachine.Animorreactances,intermsofwhichthebehaviorofmachineshasbeenportantaspectofthedivisionofsynchronousreactanceintoarmaturecalculated.Presenttheory,however,requiresmanymoreco-reactionandleakagereactanceisdiscussed
3、.Transientreactanceisefficients.Therearenowgenerallyrecognizedtwovalueseachofshowntobethedifferencebetweensynchronousreactanceandtheleakage,synchronous,andtransientreactance,whichcorrespondratioofthemutualreactancebetweenarmatureandfieldandthetotaltothetwosymmetricalax
4、eso]magnetizationofthearmaturecurrentfieldreactance.Calculationsareincludedtoshowthattheshort-andwhichrefertobalancedoperation.Negativeandzerophase-circuitandopen-circuittimeconstantsarerelatedtoeachotherinasequencereactancesarealsoemployedtodetermineoperationundersimp
5、lemanner.unbalancedconditions,anditispossibleanddesirabletodistinguishTheappendixescoverthefollowingsubjects:otherreactances.Inviewoftheincreasingcomplexityofthesubjecta.ApplicationofthePrincipleofSuperpositiontoSynchronousitisfeltthatacriticalsurveyofitisinorderandthe
6、objectoftheMachineAnalysis.paperhasbeentoprovidethatsurvey.b.ReplacingtheEffectofInducedFieldCurrentsbyEmployingThepaperhasbeendividedintotwoparts.PartIdescribesandTransientInsteadofSynchronousReactances.treatsofthesubjectwithregardtothosefactorswhichareimportantc.Sign
7、ificantRotorCircuitsinAdditiontotheMainFieldtoapplicationoroperatingengineers,andtodesigners.InparticWinding(whicheffecttransientreactances).ular,themajortypesofreactanceswhichincludethesynchronous,d.TheNegativePhase-SequenceReactanceofaSynchronoustransient,andphase-se
8、quencereactances,arediscussed.TheseMachinewithNegativePhase-SequenceVoltageImpressed.quantitiesaredefinedandtheirmeth
