论文正文.DOC

毕业设计(论文)-软启动装置在盘车电机控制系统中的应用

收藏

压缩包内文档预览:(预览前20页/共39页)
预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图
编号:9744391    类型:共享资源    大小:4.82MB    格式:RAR    上传时间:2018-03-24 上传人:好资料QQ****51605 IP属地:江苏
45
积分
关 键 词:
启动 装置 电机 机电 控制系统 中的 应用 利用 运用
资源描述:
毕业设计(论文)-软启动装置在盘车电机控制系统中的应用,启动,装置,电机,机电,控制系统,中的,应用,利用,运用
内容简介:
西安文理学院本科毕业设计(论文)中期检查表题目软启动装置在盘车电机控制系统中的应用学生姓名蒲莹学号08102080242专业名称机械设计制造及其自动化指导教师韩希煜检查时间2012410班级08机械(2)班毕业设计(论文)进展情况通过对该课题的了解与学习,现将完成任务总结如下(1)完成了开题报告与任务书的撰写;(2)了解了盘车的结构及目的,掌握了其工作原理;(3)了解了离合器的结构,掌握了其工作原理;(4)了解了电机的各种启动方式及其原理,比较各种启动方式的优劣;(5)掌握了星三角启动方式的原理;(6)掌握了软启动的启动方式及其工作原理;(7)了解了ABB软起动器的安装与调试;(8)完成了英文文献的翻译。指导教师意见签字年月日教研室意见签字年月日西安文理学院本科毕业设计(论文)任务书题目软启动装置在盘车电机控制系统中的应用学生姓名蒲莹学号08102080242专业班级机械设计制造及其自动化08机械2班指导教师韩希煜职称工程师教研室机械毕业设计(论文)任务与要求任务1掌握软启动装置的工作原理与盘车的结构;2分析电机的各种启动方式,总结其特点;3选择一软启动装置对其构造原理进行深入细致的分析研究;4设计盘车电机的软启动控制系统;5对设计的控制系统进行研究测试。要求1、收集并整理关于软启动装置与盘车电机控制系统的相关资料,学习相关理论;2、确定设计方案,编写控制系统的相关程序;3、完成相关图文表达,撰写毕业论文。毕业设计(论文)工作进程起止时间工作内容第12周第3周第4周第56周第78周第9周第10周第11周第12周查阅与课题相关的技术文献,并完成一篇英文文献的翻译,在完成文献查阅之后,写出较为详细的开题报告。了解电机的各种启动方式,总结其原理和异同。查阅相关资料,了解盘车的结构及盘车电机选用软启动装置启动的优点。深入研究软启动装置的相关资料,理解其工作原理并选择一种型号的软启动装置对其结构原理进行分析。选择一固定的盘车电机用软启动装置对其实现控制,分析其控制原理,并向导师提供详细的分析设计报告。编写控制程序,对程序进行验证测试并撰写毕业论文。论文定稿。整理资料准备答辩。答辩。开始日期2012110完成日期2012511教研室主任(签字)系主任(签字)西安文理学院本科毕业设计(论文)第1页SOFTSTARTINGOFINDUCTIONMOTORWITHTORQUECONTROLADEMIRNIED,MEMBER,IEEE,JOSDEOLIVEIRA,RAFAELDEFARIASCAMPOS,ROGRIOPINHODIAS,ANDLUIZCARLOSDESOUZAMARQUESABSTRACTTHISPAPERPRESENTSASIMPLETECHNIQUEBASEDONSTATORFLUXESTIMATIONTOCONTROLTHEELECTROMAGNETICTORQUEOFINDUCTIONMOTORSIMSDURINGSOFTSTARTINGTHEINHERENTPROBLEMSRELATEDTOPUREINTEGRATIONOFTHEBACKELECTROMAGNETICFORCETOESTIMATETHESTATORFLUXAREMINIMIZEDUSINGTHELOWPASSFLLTERAPPROACHTHEEXPERIMENTALRESULTSAREDEALTWITHANDCOMPAREDWITHTHEUSUALCURRENTCONTROLTECHNIQUETHERESULTSOBTAINEDVALIDATETHEPROPOSEDTECHNIQUE,SHOWINGITSVIABILITYINAPPLICATIONSWHERETHEOBJECTIVEISTOFITTHEIMTORQUEPROFILEDURINGSTARTINGORSTOPPINGACCORDINGTOTHELOADTORQUEINDEXTERMSINDUCTIONMOTORIM,SOFTSTARTER,TORQUECONTROLIINTRODUCTIONTHEACMOTORSTARTERSEMPLOYINGPOWERSEMICONDUCTORSAREBEINGINCREASINGLYUSEDTOREPLACEELECTROMAGNETICLINESTARTERSANDCONVENTIONALREDUCEDVOLTAGESTARTERSBECAUSEOFTHEIRCONTROLLEDSOFTSTARTINGCAPABILITYWITHLIMITEDSTARTINGCURRENT1THYRISTORBASEDSOFTSTARTERSARECHEAP,SIMPLE,RELIABLE,ANDOCCUPYLESSVOLUME,ANDTHEREFORE,THEIRUSEISAVIABLESOLUTIONTOTHEINDUCTIONMOTORIMSTARTINGPROBLEM2THEANGLERAMPTECHNIQUEISKNOWNASTHEVOLTAGERAMPTECHNIQUEBECAUSEITDOESNOTHAVEAVOLTAGEFEEDBACKAPPLIEDTOTHEMOTORITMEANSTHATTHEIMVOLTAGEISCONTROLLEDTHROUGHAFIRINGANGLERAMPOFTHETHYRISTORSINANOPENLOOPTHISTECHNIQUEISSIMPLE,ANDITISUSEDINLOWCOSTCOMMERCIALSOFTSTARTERSITWILLALWAYSPRODUCEASTARTINGQUADRATICTORQUECURVETHATCANBEAPPLIEDTOSMALLHYDRAULICPUMPSANDSMALLFANSDEPENDINGONTHEINITIALSWITCHINGINSTANTSOFALLTHETHREEPHASESTOTHESUPPLY,ANIMMAYPRODUCESEVEREPULSATIONSONTHEELECTROMECHANICALTORQUE,REGARDLESSOFWHETHERITISCONTROLLEDBYADIRECTONLINESTARTERORASOFTSTARTER3THEELECTROMAGNETICTORQUEPULSATIONSMAYCAUSESHOCKSTOTHEDRIVENEQUIPMENTANDDAMAGETOMECHANICALSYSTEMCOMPONENTS,SUCHASSHAFTS,COUPLINGS,ANDGEARS,IMMEDIATELYPAPER2009IDC024R3,PRESENTEDATTHEINDUSTRYAPPLICATIONSSOCIETYANNUALMEETING,EDMONTON,AB,CANADA,OCTOBER59,ANDAPPROVEDFORPUBLICATIONINTHEIEEETRANSACTIONSONINDUSTRYAPPLICATIONSBYTHEINDUSTRIALDRIVESCOMMITTEEOFTHEIEEEINDUSTRYAPPLICATIONSSOCIETYMANUSCRIPTSUBMITTEDFORREVIEWJANUARY31,2009ANDRELEASEDFORPUBLICATIONOCTOBER30,2009FIRSTPUBLISHEDMARCH25,2010CURRENTVERSIONPUBLISHEDMAY19,2010THISWORKWASSUPPORTEDBYWEGEQUIPAMENTOSELTRICOSANIED,JDEOLIVEIRA,ANDRDEFARIASCAMPOSAREWITHTHEDEPARTMENTOFELECTRICALENGINEERING,UNIVERSIDADEDOESTADODESANTACATARINA,JOINVILLE89223100,BRAZILEMAIL西安文理学院本科毕业设计(论文)第2页DEE2ANJOINVILLEUDESCBRDEE2JOJOINVILLEUDESCBRCAMPOSRAFATERRACOMBRRPDIASISWITHWEGEQUIPAMENTOSELTRICOS,JARAGUDOSUL3000,BRAZILEMAILROGERIOPDWEGNETLCDESOUZAMARQUESISWITHTHEPOWERELECTRONICSANDCONTROLRESEARCHGROUP,UNIVERSIDADEFEDERALDESANTAMARIA,SANTAMARIA97105900,BRAZILEMAILMARQUES_LCSMHOTMAILCOMDIGITALOBJECTIDENTIFIER101109/TIA20102045335IFTHESTRENGTHOFMATERIALSISEXCEEDED,ORINTHELONGTERM,OWINGTOFATIGUE2NUMEROUSATTEMPTSHAVEBEENMADEONTHEPERFORMANCEANALYSISANDCONTROLTECHNIQUESOFATHREEPHASEIMFEDFROMATHYRISTORIZEDVOLTAGECONTROLLER49IN8,ADYNAMICFUNCTIONWASUSEDFORTHETHYRISTORTRIGGERINGANGLEINTHEVOLTAGECONTROLLERPROVINGTOBEASIMPLEANDEFFECTIVEWAYTOIMPROVETRANSIENTPERFORMANCETHERATEATWHICHTHEMAINFIUXBUILDSUPISDECREASED,ANDTHETRANSIENTTORQUEISSMOOTHEDBYEMPLOYINGAPROPERTRIGGERINGFUNCTIONIN1,SOMECONTROLSTRATEGIESAREPROPOSEDTOELIMINATEELECTROMAGNETICTORQUEPULSATIONS,BOTHATSTARTINGANDRECLOSING,ANDTOKEEPTHELINECURRENTNEARLYCONSTANTATAPRESETVALUEOVERTHEENTIRESTARTINGPERIODTHEPROPOSEDCURRENTCONTROLSTRATEGYISCOMPOSEDOFSUCCESSIVECOSINESANDCONSTANTFUNCTIONSEGMENTSOFTHYRISTORTRIGGERINGANGLEIN2,THEPERFORMANCEOFTHEIMDURINGVOLTAGECONTROLLEDSOFTSTARTINGHASBEENOPTIMIZEDBYELIMINATINGTHESUPPLYFREQUENCYTORQUEPULSATIONSUSINGAPULSATINGTORQUEELIMINATIONSTRATEGYAPPLIEDIN10AND11,BYEXTENDINGITTOCOVERALLOFTHEOPERATINGCONDITIONSOFASOFTSTARTER,ANDBYKEEPINGTHELINECURRENTCONSTANTATTHEPRESETVALUEOVERTHEENTIRESOFTSTARTINGPERIODTHUS,IN1AND2,THETECHNIQUEUSEDTOSTARTTHEIMWITHSOFTSTARTERISBASEDONTHECLOSELOOPCONTROLWITHCURRENTLIMITATIONTHISCURRENTCONTROLTECHNIQUECANPROVIDEACONSTANTTORQUEDURINGTHEBEGINNINGANDINTHEMIDDLEOFTHESTARTINGPROCESSHOWEVER,DURINGTHEFINALPERIODOFTHISPROCESS,ONECANVERIFYTHEEXISTENCEOFATORQUEPULSE,INWHICH,FORCERTAINKINDSOFLOADS,ANABRUPTACCELERATIONCANBEGENERATEDTHEREFORE,ITSEEMSTHATAGOODSOLUTIONTOSOLVETHISPROBLEMISTODIRECTLYCONTROLTHEELECTROMAGNETICTORQUEDURINGTHESTARTINGPROCESSINTHISPAPER,ATORQUECONTROLTECHNIQUEISPROPOSEDTOELIMINATETHEELECTROMAGNETICTORQUEPULSATIONSANDTOKEEPTHELINECURRENTNEARLYCONSTANTATAPRESETVALUEOVERTHEENTIRESOFTSTARTINGPERIODTHISSTRATEGYALLOWSTHETORQUETOBECONTROLLEDINSUCHAMANNERTHATACONSTANTTORQUEOREVENATAILOREDTORQUECANBEFOLLOWEDBYTHEIMDURINGSTARTINGORSTOPPINGPROCESSTHEPROPOSEDTECHNIQUE,BESIDESMAKINGTHEBENEFITSOBTAINEDFROMTHECURRENTCONTROLTECHNIQUEPREVIOUSLYCITEDPOSSIBLE,ALSOALLOWSCANCELINGTHETORQUEPULSEANDTHEACCELERATIONVERIFIEDATTHEENDOFTHEIMSTARTINGTHECONTROL,PROTECTION,ANDMONITORINGFUNCTIONSOFTHEPROPOSEDTECHNIQUEAREIMPLEMENTEDINAMICROCONTROLLERTHEORETICALRESULTSAREVERIFLEDEXPERIMENTALLYUSINGACUSTOMDESIGNEDEXPERIMENTAL西安文理学院本科毕业设计(论文)第3页SETUPTHISPAPERISORGANIZEDASFOLLOWSSECTIONIIDESCRIBESTHEPROPOSEDTORQUECONTROLTECHNIQUEANDOPERATIONPRINCIPLESNIEDETALSOFTSTARTINGOFINDUCTIONMOTORWITHTORQUECONTROLFIG1PROPOSEDCONTROLTECHNIQUESCHEMATICDIAGRAMFIG2PROPOSEDCONTROLTECHNIQUEDETAILEDDIAGRAMSECTIONIIISHOWSTHEAPPROACHUSEDTOESTIMATETHEFLUXFROMWHICHTHEELECTROMAGNETICTORQUEWILLBEOBTAINEDSECTIONIVPRESENTSEXPERIMENTALRESULTSOFTHEPROPOSEDTECHNIQUE,ANDFINALLY,CONCLUSIONSAREGIVENINSECTIONVIISYSTEMDESCRIPTIONANDOPERATIONPRINCIPLESTHESCHEMATICDIAGRAMOFTHEIMSOFTSTARTERWITHTHEPROPOSEDTORQUECONTROLTECHNIQUEISGIVENINFIG1THEELECTROMAGNETICTORQUEESTIMATIONISOBTAINEDUSINGALOWPASSFILTERLPFASTHESTATORFLUXESTIMATORWHICHELIMINATESTHEANALOGINPUTOFFSETTHECLOSEDLOOPTORQUECONTROLALLOWSTHE西安文理学院本科毕业设计(论文)第4页PRODUCTIONOFTHEDESIREDSTARTTORQUEPROFILEFROMTHEADOPTEDREFERENCETORQUETREF,ADJUSTINGTHEELECTROMAGNETICTORQUETEMTOTHELOADTORQUEFIG2SHOWSADETAILEDDIAGRAMOFTHEIMSOFTSTARTERWITHTHEPROPOSEDTORQUECONTROLTECHNIQUETHISDIAGRAMISCOMPOSEDOFTHREEPAIRSOFBACKTOBACKCONNECTEDTHYRISTORS,AMICROCONTROLLERBASEDCONTROLANDPROTECTIONCIRCUITRY,RINGANDANALOGINTERFACECIRCUITS,SYNCHRONISM,ANDHUMANMACHINEINTERFACETHEANALOGINTERFACECIRCUITRECEIVESTHETHREELINETOLINEINPUTVOLTAGESIGNALSVRS,VST,ANDVTR,THETHREELINETOLINEOUTPUTVOLTAGESIGNALSVAB,VBC,ANDVCAVIADIFFERENTIALAMPLIERSWITHRESISTIVEDECADES,ANDTHETHREELINECURRENTSIGNALSIA,IB,ANDICVIACURRENTTRANSFORMERSTHEGENERATIONOFTHYRISTORFIRINGPULSESISOBTAINEDBYUSINGTHREESIGNALSTHETORQUEREFERENCESIGNAL,THEESTIMATEDTORQUESIGNAL,ANDTHEINPUTVOLTAGESYNCHRONISMSIGNALSTABLEIDEFINITIONOFOPERATIONMODESFIG3FIRINGSEQUENCEATTHEBEGINNINGOFSTARTINGPROCESS西安文理学院本科毕业设计(论文)第5页FIG4FIRINGSEQUENCEWITHTHREESUPPLYVOLTAGESSTEADYSTATETHEESTIMATEDTORQUESIGNALISCOMPAREDWITHTHETORQUEREFERENCESIGNAL,GENERATINGANERRORSIGNALTHISERRORSIGNALGENERATESAVOLTAGESIGNALATTHEPROPORTIONALINTEGRALPIOUTPUTTHEDEFLNITIONOFTHETHYRISTORTRIGGERINGANGLEISMADETHROUGHAPERCENTRELATIONBETWEENTHEPIOUTPUTANDTHEMAXIMUMSUPPLYVOLTAGEVALUETHATSIGNALISCONVERTEDINTOTIME,TAKINGINTOCONSIDERATIONTHEELECTRICSUPPLYSYSTEMOPERATIONFREQUENCYTHETIMESIGNALGENERATEDISUSEDTOGETHERWITHTHEINPUTVOLTAGESYNCHRONISMSIGNALTOGENERATEADELAYINEACHOFTHEPHASES,WHICHISPROPORTIONALTOTHEERRORSIGNALTHEINSTANTTHESESIGNALSCROSSZEROISUSEDTOGENERATETHESCRSFIRINGPULSESRELATEDTOTHERESPECTIVEPHASESTHEREFORE,ASAFUNCTIONOFTHETORQUEERRORSIGNAL,AVARIATIONOFTHEFIRINGANGLEISOBTAINEDWHICHALLOWSTHECONTROLOFTHEVOLTAGEAPPLIEDTOTHEMOTORAND,CONSEQUENTLY,OFTHEMACHINETORQUEATANYTIME,BYIMPLEMENTINGTHETHYRISTORCONTROLLER,THEIMOPERATESINONEOFTHEOPERATIONMODESDEFINEDINTABLEIMODE0NOSUPPLYVOLTAGE,MODE1,2,AND3TWOSUPPLYVOLTAGES,ANDMODE4THREESUPPLYVOLTAGESFIG5PHASEVOLTAGEANDCURRENTWAVEFORMSADURINGSTARTINGPROCESSANDBDURINGSTEADYSTATE西安文理学院本科毕业设计(论文)第6页FIG6DIAGRAMOFTHEPROPOSEDELECTROMAGNETICTORQUEESTIMATORBASEDONANINTWITHOFFSETMINIMIZATIONCONSIDERINGTHETHYRISTORFIRINGANGLE,THETRAINOFTRIGGERINGPULSESREQUIREDFORTHEWHOLETHREEPHASESYSTEMWILLBESEPARATEDBYANANGLEOF60TOALLOWVARIATIONINTHEVALUEOFWITHTIME,THETRAINOFTHETRIGGERINGPULSESREQUIREDWILLBESEPARATEDBY60TINFIG3THEFIRINGANGLEHASAMAXIMUMVALUE120,IE,MINIMUMVOLTAGE,WITHUNSYMMETRICTWOPHASEOPERATIONMODESFIG4SHOWSTHETHREEPHASEOPERATIONMODETHETHYRISTORSARECONTROLLEDINTHESAMEWAYASINMODES1,2,AND3,BUT,INTHISCASE,ITCANBESEENTHATTHERINGANGLEHASAMINIMUMVALUE60,IE,MAXIMUMVOLTAGETHEIMSUPPLYVOLTAGEANDCURRENTWAVEFORMSDURINGSTARTINGPROCESSANDSTEADYSTATEARESHOWNINFIG5,WHERETHEANGLEHASITSMAXIMUMAANDMINIMUMVALUEBFORNORMALSTEADYSTATEOPERATION,WITHCURRENTCONTINUOUSLYOWINGINTHETHREEPHASES,THETRIGGERINGANGLEIS,WHEREISTHELOADDEPENDENTPHASESHIFTANGLEFOR,THETHYRISTORCONDUCTIONREQUIREMENTSARENOTMET,ANDTHEREFORE,THECONSTRAINTFORTRIGGERINGANGLEISIIIFLUXESTIMATIONAPPROACHTHEIMSTATORFLUXISESTIMATEDTHROUGHTHEINTEGRATIONOFTHEBACKELECTROMOTIVEFORCEASDESCRIBEDBYTHEFOLLOWINGEQUATIONSINTHESTATIONARYREFERENCEFRAME12,13WHEREVSANDISARETHEMEASUREDSTATORSUPPLYVOLTAGESANDCURRENTS,RESPECTIVELY,ANDRSISTHESTATORRESISTANCETHISMETHODWASCHOSENBECAUSEITREQUIRESONLYONEPARAMETER,THESTATORRESISTANCE,WHICHISOBTAINEDFROMKNOWNMETHODSTHEUXMAGNITUDEANDANGLEOFTHEESTIMATEDSTATORUXCANBEWRITTENAS西安文理学院本科毕业设计(论文)第7页THUS,THEIMTORQUECANBECALCULATEDASFOLLOWSWHEREPISTHENUMBEROFPOLESOFTHEIMWHENAPUREINTEGRATORINTISIMPLEMENTEDINTHEDISCRETEFORM,ASINADIGITALSIGNALPROCESSOR,ANERRORCANARISE12,13THISERRORCOMPRISESTHEDRIFTPRODUCEDBYTHEDISCRETEINTANDALSOTHEDRIFTPRODUCEDBYMEASUREMENTOFFSETERRORPRESENTINTHEBACKELECTROMOTIVEFORCEASMALLDCCOMPONENT,NOMATERHOWSMALLITIS,CANDRIVETHEPUREINTINTOSATURATIONTHEINTEGRATIONERRORASSOCIATEDWITHTHEIMPLEMENTATIONOFTHEINTISCONSTANTANDSOMEHOWLOOKSLIKEANOFFSETININITIALINTEGRATEDVALUEFROMTHESIGNALATTHEINPUTOFTHEINT,ITISNOTEASYTOKNOWWHETHERTHEINTEGRATEDSIGNALWILLHAVEANOFFSETORNOTTHEMEASUREMENTOFFSETCANBEREDUCEDTOANACCEPTABLEVALUEBYINTRODUCINGANOFFSETADJUSTMENTATTHEINPUTOFTHEINT12,ORTHISCANBEDONEUSINGAHIGHPASSLTERHPF15THEINTEGRATIONDRIFTPROBLEMDUETODCOFFSETANDMEASUREMENTNOISECANBEAVOIDEDUSINGANLPF13,14THUS,FIG6SHOWSTHEAPPROACHUSEDTOESTIMATETHEIMSTATORUXANDTHEELECTROMAGNETICTORQUETHEPURPOSEOFTHESIXHPFSUSEDAFTERTHESTATORVOLTAGESANDCURRENTANALOGREADINGSISTOELIMINATETHEOFFSETOFTHEANALOGINPUTS,WHILETHEPURPOSEOFTHERSTLPFISTOSUBSTITUTETHEPUREINT,AVOIDINGTHEPROBLEMSREGARDINGTHEUSEOFTHEINTASPREVIOUSLYMENTIONEDTHEINSTANTANEOUSTORQUEINPUTOFTHESECONDLPFPRESENTSPERIODICOSCILLATIONS,BEINGTHEMOSTSIGNICANTONEINTHESUPPLYFREQUENCY16TOELIMINATETHOSEOSCILLATIONS,ANLPFHASBEENUSEDTHESECONDLPFWASDESIGNEDINTHESAMEMANNERASTHEFIRSTLPF,GENERATINGTHEELECTROMAGNETICLTEREDTORQUECURVETEMFTHELTERPROJECTWASBASEDONTHEFOLLOWINGSPECICATIONSDENEDTOTHEPROPOSEDSTATORUXESTIMATOR1THEMOTORSTATORUXESTIMATIONMUSTOPERATEUNDERAFREQUENCYRANGEFROM50HZ15TO60HZ1542TO70HZWITH50OR60HZMOTORSTWO,FOUR,SIX,ANDEIGHTPOLESCURRENTSFROM9TO1400AANDFEEDINGVOLTAGESFROM220TO575V2THERESPONSEDYNAMICSOFTHESTATORUXESTIMATIONMUSTBECOMPATIBLEWITHASEMICYCLEOFTHESUPPLYVOLTAGESINUSOIDALSIGNAL,IE,10MSFOR50HZAND833MSFOR60HZ3THECALCULATIONOFTHEUXMUSTBEDONEWITHINTHESEMICYCLEOFTHESUPPLYVOLTAGE西安文理学院本科毕业设计(论文)第8页SINUSOIDALSIGNAL4ASAMPLINGRATEOF250SMUSTBEUSEDTOCARRYOUTTHEESTIMATIONANDCONTROLROUTINESONCETHESTATORUXESTIMATORSPECICATIONSAREDENED,THELTERPROJECTWASBASEDONTHEUSEOFRSTORDERBUTTERWORTHANALOGLTERSATRST,THEHPFSWEREDESIGNEDWITHXEDCUTOFFFREQUENCY,ONEDECADEBELOWTHEEXCITATIONFREQUENCYTHEEXCITATIONFREQUENCYWASDENEDASTHEAVERAGEOFTHEEXCITATIONFREQUENCYVARIATIONRATE,IE,55HZTHELPFSFOLLOWEDTHESAMEDESIGNCRITERIAUSEDFORTHEHPFSAFTERTHAT,THEANALOGLTERSWEREDISCRETIZEDBYUSINGTHEBILINEARTRANSFORMATIONORTUSTINMETHODWITHASAMPLINGRATEOF250SONECANOBSERVETHATTHESAMPLINGRATERESULTSINANYQUISTFREQUENCYMUCHHIGHERTHANTHEOPERATIONFREQUENCYSPECIEDINITEM1,RESULTINGINVERYLOWDISTORTIONVALUESFORTHEDISCRETIZEDSIGNALSTHEDISCRETIZATIONOFTHEHPFSRESULTEDINTHEFOLLOWINGTRANSFERFUNCTIONFROM6,ONECANOBSERVETHEEXISTENCEOFAZEROONTHEUNITARYCIRCLEANDAPOLETHATDEPENDSONTHEVALUEOF,WHICH,INTURN,DEPENDSONTHECUTOFFFREQUENCYEQUATION6WASIMPLANTEDINTHEMICROCONTROLLERTHEDISCRETIZATIONOFTHELPFSRESULTEDINTHEFOLLOWINGTRANSFERFUNCTION西安文理学院本科毕业设计(论文)第9页TABLEIIIMDATEANDHASTHESAMEVALUEASTHATOF8INTHISCASE,ONECANALSOSEETHEEXISTENCEOFAZEROONTHEUNITARYCIRCLEANDAPOLETHATDEPENDSONTHEVALUEOF,WHICHDEPENDSONTHECUTOFFFREQUENCYEQUATION9WASIMPLEMENTEDINTHEMICROCONTROLLERTHECORRECTIONFACTORCFTAKESINTOCONSIDERATIONTHEDIFFERENCESBETWEENTHEMAGNITUDEANDPHASEVALUESOFTHEPUREINTINRELATIONTOTHELPF,IE,BYTRANSFORMINGTHEVALUESFOUNDFROMPOLARTORECTANGULAR,ONEWILLNDONCETHECFSAREOBTAINED,MULTIPLYTHEMDIRECTLYBYTHEOUTPUTSIGNALSSANDSOFTHERSTLPFTOOBTAINTHECORRECTEDCOMPONENTSOFTHEESTIMATEDSTATORUX,IE,西安文理学院本科毕业设计(论文)第10页INRELATIONTOTHEHPF,ONECANOBSERVETHATTHEMAGNITUDEERRORSINTHERANGEOFTHEDENEDFREQUENCIESAREPRACTICALLYZERO,ANDTHEREFORE,THEREISNONEEDTOCORRECTTHEMINRELATIONTOTHEPHASEDELAYS,THEYAREELIMINATEDTHROUGHTHEUSEOFTHELPFSIVEXPERIMENTALRESULTSEXPERIMENTSWERECARRIEDOUTTOVERIFYTHEFEASIBILITYOFTHEPROPOSEDTORQUECONTROLTECHNIQUETWOWEGSTANDARDIMSWITHDIFFERENTPOWERRATINGSWERETESTEDTABLEIISHOWSTHEMOTORDATAINPHYSICALUNITSFIG7EXPERIMENTALSETUPFORMOTOR1AVIEWOFHARDWAREBVIEWOFCONTROLSYSTEMCOURTESYOFWEGEQUIPAMENTOSELTRICOSFIG8EXPERIMENTALSETUPFORMOTOR2AVIEWOFHARDWAREBVIEWOFCONTROLSYSTEMCOURTESYOFWEGEQUIPAMENTOSELTRICOSFORMOTOR1,THEEXPERIMENTALSETUPSEEFIG7COMPRISEDAWEGSOFTSTARTERMODELSSW06WITHTORQUECONTROL,AMAGTROLDYNAMOMETERPROVIDEDWITHACONTROLLERANDLOADTORQUEINDICATIONOF28NMMAXIMUMVALUE,ANDANOSCILLOSCOPEITISALSOPROVIDEDWITHANELECTROMAGNETICBRAKEWHICH西安文理学院本科毕业设计(论文)第11页IMPOSESALOADTORQUE,APIDCONTROLLERWHICHCANBEADJUSTEDTOOBTAINTHEDESIREDDYNAMICRESPONSE,ANDTWOANALOGPROGRAMMABLEOUTPUTSTHATWEREUSEDTOINDICATETHETORQUEANDSPEEDINREVOLUTIONSPERMINUTEOBTAINEDINANOSCILLOSCOPETHETORQUESENSORUSEDHADANADJUSTABLEBANDWIDTHFROM5KHZTO1HZANDALLOWSTUNINGOFTHETORQUESIGNALFREQUENCYLIMITATIONTHEMOTORWASSUBMITTEDTOASUPPLYFREQUENCYVARIATIONOBTAINEDBYMEANSOFAFREQUENCYINVERTERTHAT,INTURN,FEDTHESOFTSTARTER,ALLOWINGAFREQUENCYVARIATIONFROM40TO70HZANLCLINEFILTERWASCONNECTEDTOTHEINVERTEROUTPUTTOFILTERPULSEWIDTHMODULATIONPWMVOLTAGESUNDERPURESINUSOIDALVOLTAGESTHEEXPERIMENTALRESULTSPRESENTEDINTHISPAPERWEREOBTAINEDUNDER220VAND50HZFORMOTOR2,DUETOTHEHIGHCURRENTANDPOWERVALUES,THEEXPERIMENTALSETUPSEEFIG8COMPRISEDASOFTSTARTERWITHTORQUECONTROLANDRATEDCURRENTOF365A,ADCMACHINE300KWWORKINGASADYNAMOMETER,ANDANOSCILLOSCOPETOTESTTHISMOTOR,DUETOTHEIMPOSSIBILITYOFMEASURINGTHETORQUEBECAUSEOFTHELACKOFPROPEREQUIPMENT,THEMOTORTORQUEWASESTIMATEDBYTHESOFTSTARTERTHROUGHTHEANALOGOUTPUT,THESPEEDWASOBTAINEDTHROUGHATACHOGENERATOR010VANDTHECURRENTWASOBTAINEDTHROUGHTHECURRENTPROBEWITHTHEBANDWIDTHOF10KHZALLSIGNALSWEREOBTAINEDFROMTHEOSCILLOSCOPETHEIMSTARTINGWAVEFORMSOFSPEED,RMSLINECURRENT,ANDSHAFTANDESTIMATEDTORQUEVERSUSTIMEARESHOWNINFIGS914FORACOMPARATIVEASSESSMENTWITHTHETECHNIQUEPROPOSEDINTHISPAPER,FIGS9AND13SHOWSTARTINGPERFORMANCESUSINGTHECURRENTLIMITTECHNIQUEWITHMOTORS1AND2,RESPECTIVELYINADDITION,ITMUSTBENOTEDTHAT,FORALLEXPERIMENTSSHOWNINTHISPAPER,THELOADTORQUETLISCONSTANTINSPITEOFTHEDIFFERENTVALUESASCANBESEENINFIGS9AND13,DESPITETHEFACTTHATTHELINECURRENTISLIMITED,THEREISATORQUEPULSE,IE,THETORQUEISALMOSTCONSTANTEXCEPTATTHEFINALPERIODOFTHESTARTINGPROCESSWHENTHETORQUEINCREASES,ATLEAST,TWOTIMESTHISBEHAVIORISNOTDESIRED,ANDITMAYDAMAGETHEMECHANICALSYSTEMCOMPONENTSTHETORQUECONTROLSTRATEGYPROPOSEDINTHISPAPER,HOWEVER,ELIMINATESTHETORQUEPULSEFIGS1012ANDREDUCESTHESTARTINGTIMEOFTHEMOTORLOADCOMBINATION,ASSHOWNINFIG14FORPURPOSESOFCOMPARISON,FIGS9AND10SHOWTHESOFTSTARTINGCURVESOFMOTOR1USINGTHECURRENTLIMITTECHNIQUEANDTHETORQUECONTROLTECHNIQUE,RESPECTIVELYINBOTHCASES,THELOADTORQUEANDSOFTSTARTINGPERIODARETHESAMECONSIDERINGTHECURRENTCONTROLSTRATEGY,WHENSTARTINGTHEMOTOR,THETHYRISTORTRIGGERANGLEISCONTROLLEDUNTILTHECURRENT西安文理学院本科毕业设计(论文)第12页FIG9STARTINGPERFORMANCEOFTHECURRENTLIMITTECHNIQUEFORMOTOR1RMSLINECURRENTLIMITOFI22INANDLOADTORQUEOFTL01TN,WHERETNISTHERATEDTORQUECH1SPEED,636R/MIN/DIVCH2RMSLINECURRENT,10A/DIVCH3SHAFTTORQUE,02TN/DIVFIG10STARTINGPERFORMANCEOFTHEPROPOSEDTORQUECONTROLTECHNIQUEFORMOTOR1WITHONEPOINTOFREFERENCECONSTANTMOTORTORQUEOFT02TNANDLOADTORQUEOFTL01TNCH1SPEED,636R/MIN/DIVCH2RMSLINECURRENT,10A/DIVCH3SHAFTTORQUE,02TN/DIV西安文理学院本科毕业设计(论文)第13页FIG11STARTINGPERFORMANCEOFTHEPROPOSEDTORQUECONTROLTECHNIQUEFORMOTOR1WITHTWOPOINTSOFREFERENCEINITIALMOTORTORQUEOFT016TN,NALMOTORTORQUEOFT023TN,ANDLOADTORQUEOFTL01TNCH1SPEED,636R/MIN/DIVCH2RMSLINECURRENT,10A/DIVCH3SHAFTTORQUEOF02TN/DIVFIG12STARTINGPERFORMANCEOFTHEPROPOSEDTORQUECONTROLTECHNIQUEFORMOTOR1WITHTHREEPOINTSOFREFERENCEINITIALMOTORTORQUEOFT005TN,INTERMEDIATEMOTORTORQUEOFT024TN,FINALMOTORTORQUEOFT022TN,ANDLOADTORQUEOFTL01TNCH1SPEED,636R/MIN/DIVCH2RMSLINECURRENT,10A/DIVCH3SHAFTTORQUEOF02TN/DIV西安文理学院本科毕业设计(论文)第14页FIG13STARTINGPERFORMANCEOFTHECURRENTLIMITTECHNIQUEFORMOTOR2RMSLINECURRENTLIMITOFI2INANDLOADTORQUEOFTL006TNCH1ESTIMATEDTORQUE005TN/DIVCH2RMSLINECURRENT,200A/DIVCH3SPEED,331R/MIN/DIVFIG14STARTINGPERFORMANCEOFTHEPROPOSEDTORQUECONTROLTECHNIQUEFORMOTOR2WITHTHREEPOINTSOFREFERENCEINITIALMOTORTORQUEOFT01TN,INTERMEDIATEMOTORTORQUEOFT014TN,NALMOTORTORQUEOFT01TN,ANDLOADTORQUEOFTL006TNCH1ESTIMATEDTORQUE005TN/DIVCH2RMSLINECURRENT,200A/DIVCH3SPEED,331R/MIN/DIVLIMITISREACHEDANDREMAINSUNDERTHISLIMITUNTILTHEMOTORREACHESITSRATEDSPEED,WHENTHETHYRISTORTRIGGERANGLEISMINIMUM,IE,THESAMEASTHATOFTHESUPPLYVOLTAGETHECURRENTCANTHUSBEKEPTCONSTANTATAPREDEFINEDVALUEDURINGTHEWHOLEMOTORSTARTINGTIMEHOWEVER,WITHREGARDTOTHETORQUEATTHEMOTORSHAFT,THEEXISTENCEOFATORQUEPULSECLOSETONOMINALROTATIONISDUETOTHETHYRISTORTRIGGERANGLEWHICHBECOMESMINIMUM,IMPOSINGAFEEDINGVOLTAGEANDSUDDENACCELERATIONOFTHEMOTORSIMILARCURRENTBEHAVIORISVERIFIEDFORTHETORQUECONTROLSTRATEGY,WHICHCANBEOBTAINEDBYSETTINGTREFTOACONSTANTVALUE,IE,ONEPOINTOFREFERENCEHOWEVER,INTHISCASE,THEREISNOTORQUEPULSE,THESPEEDISQUITESMOOTH,ANDANABRUPTVARIATIONISNOLONGERRECOGNIZEDOBSERVETHATTHECONTROLISACTINGDIRECTLYONTHETORQUEPROFILEWHICHISDIFFERENTFROMTHECURRENTCONTROLCASE,WHERETHECONTROLDIDNOTACTDIRECTLYONTHETORQUEPROFILEINFIG11,ONECANOBTAINDIFFERENTSTARTINGPER
温馨提示:
1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
提示  人人文库网所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。
关于本文
本文标题:毕业设计(论文)-软启动装置在盘车电机控制系统中的应用
链接地址:https://www.renrendoc.com/p-9744391.html

官方联系方式

2:不支持迅雷下载,请使用浏览器下载   
3:不支持QQ浏览器下载,请用其他浏览器   
4:下载后的文档和图纸-无水印   
5:文档经过压缩,下载后原文更清晰   
关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

网站客服QQ:2881952447     

copyright@ 2020-2024  renrendoc.com 人人文库版权所有   联系电话:400-852-1180

备案号:蜀ICP备2022000484号-2       经营许可证: 川B2-20220663       公网安备川公网安备: 51019002004831号

本站为文档C2C交易模式,即用户上传的文档直接被用户下载,本站只是中间服务平台,本站所有文档下载所得的收益归上传人(含作者)所有。人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。若文档所含内容侵犯了您的版权或隐私,请立即通知人人文库网,我们立即给予删除!