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1、西安文理學(xué)院本科畢業(yè)設(shè)計(jì)（論文）第0頁(yè)SoftStartingofInductionMotWithTqueControlAdemirNiedMemberIEEEJosdeOliveiraRafaeldeFariasCamposRogrioPinhoDiasLuizCarlosdeSouzaMarquesAbstract—Thispaperpresentsasimpletechniquebasedonstatfluxestimationt

2、ocontroltheelectromagictqueofinductionmots(IMs)duringsoftstarting.Theinherentproblemsrelatedtopureintegrationofthebackelectromagicfcetoestimatethestatfluxareminimizedusingthelowpassfllterapproach.Theexperimentalresultsar

3、edealtwithcomparedwiththeusualcurrentcontroltechnique.TheresultsobtainedvalidatetheproposedtechniqueshowingitsviabilityinapplicationswheretheobjectiveistofittheIMtqueprofileduringstartingstoppingaccdingtotheloadtque.Inde

4、xTerms—Inductionmot(IM)softstartertquecontrol.I.INTRODUCTIONTHEacmotstartersemployingpowersemiconductsarebeingincreasinglyusedtoreplaceelectromagiclinestartersconventionalreducedvoltagestartersbecauseoftheircontrolledsof

5、tstartingcapabilitywithlimitedstartingcurrent[1].Thyristbasedsoftstartersarecheapsimplereliableoccupylessvolumetherefetheiruseisaviablesolutiontotheinductionmot(IM)startingproblem[2].Theangleramptechniqueisknownasthevolt

6、ageramptechniquebecauseitdoesnothaveavoltagefeedbackappliedtothemot.ItmeansthattheIMvoltageiscontrolledthroughafiringanglerampofthethyristsinanopenloop.Thistechniqueissimpleitisusedinlowcostcommercialsoftstarters.Itwilla

7、lwaysproduceastartingquadratictquecurvethatcanbeappliedtosmallhydraulicpumpssmallfans.DependingontheinitialswitchinginstantsofallthethreephasestothesupplyanIMmayproduceseverepulsationsontheelectromechanicaltqueregardless

8、ofwhetheritiscontrolledbyadirectonlinestarterasoftstarter[3].TheelectromagictquepulsationsmaycauseshockstothedrivenequipmentdamagetomechanicalsystemcomponentssuchasshaftscouplingsgearsimmediatelyPaper2009IDC024.R3present

9、edattheIndustryApplicationsSocietyAnnualMeetingEdmontonABCanadaOctober5–9approvedfpublicationintheIEEETRANSACTIONSONINDUSTRYAPPLICATIONSbytheIndustrialDrivesCommitteeoftheIEEEIndustryApplicationsSociety.Manusubmittedfrev

10、iewJanuary312009releasedfpublicationOctober302009.FirstpublishedMarch252010currentversionpublishedMay192010.ThiswkwassupptedbyWEGEquipamentosEltricos.A.NiedJ.deOliveiraR.deFariasCamposarewiththeDepartmentofElectricalEngi

11、neeringUniversidadedoEstadodeSantaCatarinaJoinville89223100Brazil(email:西安文理學(xué)院本科畢業(yè)設(shè)計(jì)（論文）第2頁(yè)setup.Thispaperisganizedasfollows.SectionIIdescribestheproposedtquecontroltechniqueoperationprinciplesNIEDetal.:SOFTSTARTINGOFIND

12、UCTIONMOTWITHTQUECONTROLFig.1.Proposedcontroltechniqueschematicdiagram.Fig.2.Proposedcontroltechniquedetaileddiagram.SectionIIIshowstheapproachusedtoestimatethefluxfromwhichtheelectromagictquewillbeobtainedSectionIVprese

13、ntsexperimentalresultsoftheproposedtechniquefinallyconclusionsaregiveninSectionV.II.SYSTEMDEIONOPERATIONPRINCIPLESTheschematicdiagramoftheIMsoftstarterwiththeproposedtquecontroltechniqueisgiveninFig.1.Theelectromagictque

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