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1、TheReactancesofSynchronousMachinesBYR.H.PARK1andB.L.ROBERTSON1Associate,A.I.E.E.Associate,A.I.E.E.Synopsis.-Untilsomewhatrecently,synchronousmachinereactance,andthevariationinthislatterquantitydependingupontheoryhasbeensatisfiedwitharelativelyfewcharacteristicco
2、nstants,whethercurrentorvoltageisimpressedonthemachine.Anim-orreactances,intermsofwhichthebehaviorofmachineshasbeenportantaspectofthedivisionofsynchronousreactanceintoarmaturecalculated.Presenttheory,however,reqtiresmanymoreco-reactionandleakagereactanceisdiscus
3、sed.Transientreactanceisefficients.Therearenowgenerallyrecognizedtwovalueseachofshowntobethedifferencebetweensynchronousreactanceandtheleakage,synchronous,andtransientreactancewt,hichcorrespondratioofthemutualreactancebetweenarmatureandfieldandthetotaltothetwosy
4、mmetricalaxesofmagntetizationofthearmaturecurrentfieldreactance.Calcutlationsareincludedtoshowthattheshort-andwhichrefertobalancedoperation.Negativeandzerophase-circuitandopen-circuittime-constantsarerelatedtoeachotherinasequencereactancesarealsoemployedtodeterm
5、ineoperationundersimplemanner.unbalancedconditions,anditispossibleanddesirabletodistinguishTheappendixescoverthefollowtingsubjects:otherreactances.Inviewoftheincreasingcomplexityofthesubjecta.ApplicationofthePrincipleofSuperpositiontoSynchronousitisfeltthatacrit
6、icalsurveyofitisinorderandtheobjectoftheMachineAnalysis.paperhasbeentoprovidethatsurvey.b.ReplacingtheEffectofInducedFieldCurrentsbyEmployingThepaperhasbeendividedintotwoparts.PartIisdescriptive,TransientinsteadofSynchronousReactances.andtreatsthesubjectwithrega
7、rdtothosefactorswhichareimportantc.SignificantRotorCircuitsinAdditiontotheMainFieldtoapplicationoroperatingengineers,andtodesigners.Inpartic-lVinding(whichaffecttransientreactances).ular,themajortypesofreactanceswhichincludethesynchronous,d.TheNegativePhase-Sequ
8、enceReactanceofaSynchronoustransient,andphase-sequencereactances,arediscussed.TheseMachinewithNegativePhase-SequenceVoltageImpressed.quantitiesaredefinedandtheirmetho
