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外文翻译--变频技术.doc

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外文翻译--变频技术.doc

附录一英文文献FREQUENCYVARIATIONSPEEDCONTROL11THEPOPULARITYANDPROSPECTOFFREQUENCYVARIATIONSPEEDCONTROLTHEELECTRICALMACHINERYEXCHANGEFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGYISTHEELECTRICITYSAVING,THEIMPROVEMENTTECHNICALPROCESSIMPROVESTHEPRODUCTQUALITYANDTHEIMPROVEMENTENVIRONMENT,THEIMPETUSTECHNOLOGYADVANCEMENTONEMAINMETHODNOWTHEFREQUENCYCONVERSIONVELOCITYMODULATIONBYITSOUTSTANDINGVELOCITYMODULATIONANDTHEBRAKINGQUALITY,THEHIGHEFFICIENCY,THEHIGHPOWERFACTORANDTHEELECTRICITYSAVINGEFFECT,THEWIDESPREADAPPLICABLESCOPEANDOTHERMANYMERITSBYTHEDOMESTICGRANDFATHERWASTHOUGHTMOSTHASTHEDEVELOPMENTFUTUREVELOCITYMODULATIONWAYTHEELECTRICALTRANSMISSIONCONTROLSYSTEMUSUALLYBYTHEELECTRICMOTOR,THECONTROLDEVICEANDTHEINFORMATIONINSTALLS3PARTSTOBECOMPOSED,THEELECTRICALTRANSMISSIONRELATESUSESTHEELECTRICMOTORBYTOSAVETHEELECTRICALENERGYANDTOCONTROLTHEMACHINERYREASONABLYTHEOPERATINGCONDITION,THEREALIZATIONELECTRICALENERGYMECHANICALENERGYTRANSFORMATION,ACHIEVES,THEHIGHPRODUCTION,THELOWCONSUMPTIONGOALHIGHQUALITYTHEELECTRICALTRANSMISSIONDIVIDESINTODOESNOTMODULATEVELOCITYANDMODULATESVELOCITYTWOBIGKINDS,THEVELOCITYMODULATIONISDIVIDEDTHEEXCHANGETOMODULATEVELOCITYANDTODIRECTCURRENTMODULATESVELOCITYTWOWAYSTHEVARIABLESPEEDMOTORDIRECTLYDOESNOTSUPPLYPOWERBYTHEELECTRICALNETWORKBUTTHEMACHINERYWHICHDOESNOTMODULATEVELOCITYALONGWITHELECTRICPOWERELECTRONICTECHNOLOGYDEVELOPMENTTHISKINDOFORIGINALMANUSCRIPTMOREANDMOREMANYCHANGESTOTHEVELOCITYMODULATIONTRANSMISSIONBYTOSAVETHEELECTRICALENERGYTHEIMPROVEMENTPRODUCTQUALITY,ENHANCESTHEOUTPUTTHEREFORETHEVELOCITYMODULATIONTRANSMISSIONISANIMPORTANTPROFESSION,ALREADYOBTAINEDTHECOUNTRYTOTAKE,ATPRESENTHADCERTAINSCALEINRECENTYEARSEXCHANGEDINTHEVELOCITYMODULATIONMOSTTOBEACTIVE,TODEVELOPQUICKESTISTHEFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGY,THEFREQUENCYCONVERSIONVELOCITYMODULATIONISEXCHANGESTHEVELOCITYMODULATIONFOUNDATIONANDTHEBRANCHCONTENTTHELASTCENTURYTRANSFORMERAPPEARANCECAUSESTHECHANGEVOLTAGETOBECOMEVERYMUCHEASY,THUSHASACCOMPLISHEDAHUGEELECTRICPOWERPROFESSIONSINCELONGAGO,THEALTERNATINGCURRENTFREQUENCYALWAYSISFIXED,THEFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNOLOGYAPPEARANCECAUSESTHEFREQUENCYTOBECOMEMAYTHEFULLUSERESOURCESINTHISRECENT10YEARS,THEFREQUENCYCONVERSIONTECHNOLOGYAPPLICATIONHASTHEVERYBIGDEVELOPMENTINOURCOUNTRY,ANDOBTAINEDTHEGOODEFFECTTOBEPOSSIBLETOSAY,THEFREQUENCYCONVERSIONTECHNOLOGYHASACCEPTEDFORTHEMAJORITYUSERS,BUTHADNOALTERNATIVEBUTTOPOINTOUT,OURCOUNTRYINFREQUENCYCONVERSIONTECHNOLOGYAPPLICATIONASPECT,WITHDEVELOPEDCOUNTRYLEVELSHANGYOUVERYBIGDISPARITYATPRESENT,THEACMOTORSWEAREUSINGNOWUSEFREQUENCYVARIATIONSPEEDCONTROLONLYABOUT6,BUTTHEDEVELOPEDCOUNTRYIS6070,JAPANONAIRBLOWER,WATERPUMPFREQUENCYCONVERSIONVELOCITYMODULATIONUSERATEIS10,BUTOURCOUNTRYISLESSTHAN001,INJAPANAIRCONDITIONERUSINGFREQUENCYVARIATIONTECHNIQUERATEIS70,BUTOURCOUNTRYSONLYTHENJUSTSTARTEDEMBARKSFROMTHISREALITY,FREQUENCYCONVERSIONTECHNOLOGYREMAINHAVETHEVERYBIGDEVELOPMENTSPACE,WESHOULDCOMPLETETHEPROMOTEDAPPLICATIONWORKDOGGEDLYANDWITHTHECONSTANTDEVELOPMENTOFCONTROLTECHNIQUEANDCONTROLAVENUE,FREQUENCYVARIATIONSPEEDCONTROLLEDHASDEVELOPEDTHEVECTORCONTROLLEDFREQUENCYVARIATIONVELOCITYMODULATION,BYCONTROLLINGTHEACMOTORINSIDEACTFORSHUNTDCMOTORFIELDCOPER’SFLUX,TOENHANCETHEPERMANENTTORQUEOUTPUTSCOPEANDSTATICANDDYNAMICCHARACTER,MAKETHEACMOTORFREQUENCYVARIATIONSPEEDCONTROLLEDSYSTEMSUPERIORTODCMOTORVOLTAGEVARIATIONSPEEDCONTROLLEDSYSTEMFORSIMPLIFYINGTHECONTROLSYSTEM,REDUCINGTHEFAULTRATE,THEREHASDEVELOPEDAVECTORCONTROLLEDFREQUENCYVARIATIONSPEEDCONTROLWITHOUTSPEEDSENSORWHICHBASEDONTHEVECTORCONTROLLEDFREQUENCYVARIATIONSPEEDCONTROLINSOMEAPPLICATIONWHICHHAVELOWREQUIRE,VECTORCONTROLLEDFREQUENCYVARIATIONSPEEDCONTROLWITHOUTSPEEDSENSORCOULDCOMPLETELYCOMPAREWITHTHEVECTORCONTROLLEDFREQUENCYVARIATIONSPEEDCONTROLTHATHAVESPEEDSENSORTHEVECTORCONTROLHASTHEEPOCHMAKINGSIGNIFICANCETOTHEACCURRENTMOTORVELOCITYMODULATIONFREQUENCYVARIATIONSPEEDCONTROLISTHEBESTWAYINTHEMOTORSPEEDMODULATION,ITISTHEPERFECTGEARINTHECOMPANY’STECHNICALREFORMANDPRODUCTRENEWAL,ITISTHEESSENTIALCOMPOSITIONINTHEINDUSTRIALAUTOMATICSYSTEM,ITISTHEASSUMPTIONOFREALIZINGTHEAUTOMATICOFPRODUCTPROCEEDANDMANAGEMENT,ITISALSOTHEPRECONDITIONINTHEDEVELOPMENTOFINFORMATIONIZATIONINOURCOUNTRY’STRADITIONALESTATE,USINGTHEDCMOTORSPEEDCONTROLACTUATIONACCOUNTABOUT8590INTHESPEEDCONTROLLEDSYSTEM,BUTTHEACSPEEDCONTROLLEDSYSTEMACCOUNTABOUT1015LOWEFFICIENCY,BADQUALITY,LARGECOST,HIGHFAULTRATEHAVEALREADYBEENTHEBOTTLENECKTHATRESTRAINTHEDEVELOPMENTOFTHECOMPANYSO,WEMUSTPROMOTETHEADVANCEDACFREQUENCYVARIATIONSPEEDCONTROLTECHNIQUEPOSITIVELY,ARMSTHETRADITIONALINDUSTRYWITHTHEADVANCEDEQUIPMENT,PROMOTEAFURTHERDEVELOPMENTINTHEAUTOMATION,THEINDUSTRIALIZATIONANDTHEINFORMATIONIZATION12OURCOUNTRY’SDEVELOPMENTCONDITIONINSPEEDCONTROLLEDTECHNIQUEOURCOUNTRYISADEVELOPINGCOUNTRY,SOMANYPRODUCT’SRESEARCHABILITYHASBEHINDTHEDEVELOPEDCOUNTRIESFROMNOWON,THEPRODUCTOFFREQUENCYVARIATIONSPEEDCONTROLLEDTHATOURSELVESMADEONLYACTFORLASTCENTURY90SINTHEINTERNATIONALWITHTHEREFORMANDOPENING,RAPIDDEVELOPMENTOFECONOMIC,FORMSALARGEMARKET,ITOPENSTOTHECOUNTRYCOMPANIES,ALSOTHEFOREIGNCOMPANIESMANYPRODUCTSAREEXPORTEDFROMTHEDEVELOPEDCOUNTRIES,ANDRUNSWELLINOURCOUNTRY,SATISFIEDOURNEEDINFABRICATIONANDLIVINGMANYCOPARTERSHIPCOMPANIESINOURCOUNTRYMAKETHEINTERNATIONALADVANCEDPRODUCTSTHEDOMESTICCOMPLETEDEPARTMENTINDEPENDENTLYISDESIGNINGTHEMANUFACTUREINTHECOMPLETESETINSTALLMENTTOUSETHEFOREIGNIMPORTCOMPANYANDTHEJOINTVENTURESUPPOSESADVANCEDEACH,OWNDEVELOPTHEAPPLICATIONSOFTWARE,CANPROVIDETHEFIRSTCLASSELECTRICALTRANSMISSIONCONTROLSYSTEMFORTHEDOMESTICANDFOREIGNIMPORTANTENGINEERINGPROJECTALTHOUGHOBTAINSVERYMANYRESULT,BUTSHOULDSEEBECAUSEDOMESTICDEVELOPS,THEPRODUCTIONPRODUCTABILITYVOLUNTARILYISWEAK,ISSERIOUSTOTHEOVERSEASCOMPANYSDEPENDENCEASEARLYASINTHECOUNTRY85TECHNICALATTACKPLAN,THEALTERNATINGVELOCITYMODULATIONTECHNIQUEWASLISTEDASTHEKEYTECHNICALATTACKPROJECT,BUTBECAUSEOURCOUNTRY’SELECTRICPOWERANDELECTRONICDEVICEAGGREGATELEVELISVERYLOW,ALTHOUGHTHEPRODUCTIONOFIGBT、GTOCOMPONENTHASINTRODUCEDTHEOVERSEASTECHNIQUE,ITHASNOTFORMEDTHEECONOMIESOFSCALEBENEFIT,ALMOSTDOESNOTHAVETHEINDEPENDENTDEVELOPMENTABILITYOFNEWFREQUENCYCONVERTERPRODUCTION,THISHASAFFECTEDTHEDOMESTICFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNIQUEDEVELOPMENTINTHECERTAINDEGREEINTHEHIGHEFFICIENCYACACFREQUENCYCONVERTTECHNIQUE、THEMOTORSWITHOUTCOMMUTATORTECHNIQUEANDSOON,THEDOMESTICPRODUCTALSOHASTHESUITABLEDISPARITYINTHEDIGITIZATIONANDTHESYSTEMRELIABLEASPECTCOMPARESWITHTHEOVERSEASLEVEL,INTHEMEDIUMEFFICIENCYFREQUENCYCONVERTTECHNIQUE,NEARLYALLPRODUCTIONSUSEORDINARYV/FCONTROLINLAND,FEWADOPTTHEVECTORCONTROLTECHNIQUE,ANDCANNOTSATISFIEDTHEMARKETREQUIREMENTINTHEVARIETYANDQUALITYBUTINOVERSEAS,THEFREQUENCYCONVERSIONTECHNIQUEOBTAINSTHEFULLDEVELOPMENT,ANDHASOBTAINEDTHEREMARKABLEACHIEVEMENTINEACHASPECTINPOWERCOMPONENTASPECT,HIGHVOLTAGE、THEAPPEARANCEOFSCR、GTO、IGBT、IGCTWITHHIGHCURRENTCAPACITYANDTHEUSINGINSERIESANDPARALLEL,THEHIGHPRESSUREDANDHIGHEFFICIENCYFREQUENCYCONVERTERPRODUCTIONOBTAINSTHEPRODUCTIONANDTHEPROMOTEDAPPLICATIONINMICROELECTRONICTECHNIQUEASPECT,16BITAND32BITHIGHSPEEDMICROPROCESSORSASWELLASTHEFASTDEVELOPMENTOFDSPANDASICTECHNIQUE,PROVIDEDTHEHARDWAREMETHODINREALIZINGTHEFREQUENCYCONVERTERWHICHWITHHIGHACCURACYMULTIPURPOSEINTHEORYASPECT,THEVECTORCONTROL,THEMAGNETICFLUXCONTROL,THETORQUECONTROL,THEINTELLIGENTCONTROL,THENEWCONTROLTHEORYANDSOONHAVEPROVIDEDTHERELATEDRATIONALEFORTHEHIGHPERFORMANCEFREQUENCYCONVERTERDEVELOPMENT,WEMAYSEETHAT,INTHEOVERALL,THEALTERNATINGFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNIQUEINOURCOUNTRYHASBIGDISPARITYCOMPARESWITHINTERNATIONALLEVELTHEREFORE,THEACFREQUENCYVARIATIONSPEEDCONTROLTECHNIQUEHASTHEFOLLOWINGSIDES1THEBASICRESEARCHOFCONTROLSTRATEGYINFREQUENCYCONVERTERHASALARGEGAPCOMPARESWITHTHEFOREIGNLEVEL2THETECHNICALLEVELOFTHEWHOLEMACHINEISLOWINTHEFREQUENCYCONVERTER,ALTHOUGHWEHADINPUTCERTAINLYPEOPLE,MATERIALRESOURCES,BUTBECAUSEOFTHEDISPERSEPOWER,DIDNOTFORMACERTAINLYTECHNIQUEANDPRODUCTIONSCALE3ALLTHESEMICONDUCTORPOWERDEVICEPRODUCTINTHEFREQUENCYCONVERTERISBLANK4CORRELATIVEINDUSTRIESANDRELATIVEINDUSTRIESDROPBEHIND5FEWPRODUCTIONANDSALE,LOWRELIABLEANDTECHNOLOGICALSTANDARDSWITHTHEDEVELOPMENTANDIMPROVEMENTINTHEPOWERELECTRONICTECHNIQUE,POWERDIVERTBASEDONPOWERELECTRONICCIRCUITTECHNIQUEANDVARIOUSCONTROLTECHNIQUE,THEACFREQUENCYVARIATIONSPEEDCONTROLLEDTECHNIQUEISMATUREDAYBYDAY,ANDSURETOBETHEMAINWAYINTHEFUTUREWITHTHECONSTANTDEVELOPMENTOFPOWERELECTRONICTECHNIQUE,RELIABLECHARACTER,WELLADOPTION,CHEAPPRICETHATTHEFREQUENCYCONVERTERHAVEWILLBECOMETRUETHISTECHNIQUEWILLGAINWIDELY,POPULARITYAPPLICATIONATPRESENT,FOREIGNDEVELOPEDCOUNTRIES’FREQUENCYCONVERTTECHNIQUETOWARDSTOTHEMINIATURIZATION,HIGHRELIABILITY,DEFENDWITHHARM,MOREFUNCTION,HIGHCHARACTER,ANDOURCOUNTRYISCOMINGONNOW13FREQUENCYVARIATIONSPEEDCONTROLLEDMODETHEALTERNATINGFREQUENCYCONVERSIONVELOCITYMODULATIONTECHNIQUEOBTAINEDTHERAPIDDEVELOPMENTIN20THCENTURYTHISISRELATEDWITHSOMECRUCIALTECHNICALWHICHGAINUNPRECEDENTEDPROGRESS,THEYAREMOTORVECTORCONTROLTECHNIQUE,DIRECTTORQUECONTROLTECHNIQUE,PWMTECHNIQUE,ENTIRENUMERICALCONTROLTECHNIQUEANDSELFSETTINGTECHNIQUEWHICHBASEDONMICROCOMPUTERANDLARGESCALEINTEGRATEDCIRCUIT,ANDSOON1VECTORCONTROLTECHNIQUEVECTORTRANSFORMATIONCONTROLTECHNIQUEISAONEKINDOFNEWCONTROLTHOUGHTANDCONTROLTHEORYWHICHPOSEDBYSIEMENSCOIN1971ITISREALIZINGTHESTATORCURRENTEXCITATIONCOMPONENTANDTHETORQUECOMPONENTSOLUTIONLOTUSROOTBYROTORMAGNETICFIELDDIRECTIONDETECTION,ANDVECTORTRANSFORMATION,ACHIEVEDTHEGOALTHATSEPARATELYCONTROLTHEMOTORFLUXLINKAGEANDTHEELECTRICCURRENT,ASARESULT,OBTAINFINELYSTATIC,DYNAMICPERFORMANCEUNTILNOW,THEVECTORCONTROLTECHNIQUEHASOBTAINEDTHECONSIDERABLEDEVELOPMENT,ANDALSOOBTAINEDTHEWIDESPREADAPPLICATION2VECTORCONTROLWITHOUTVELOCITYGENERATORTECHNIQUEVECTORCONTROLWITHOUTVELOCITYGENERATORTECHNIQUEABOLISHTHEPROBLEMSTHATTHEENVIRONMENTCOMPATIBILITY、INSTALLANDMAINTENANCEBRINGON,REDUCETHECOST,ENHANCETHESYSTEMRELIABILITY,ATTHESAMETIME,UNIONVECTORCONTROL,HASTHEFINEPERFORMANCEOFVECTORCONTROLTHESPEEDESTIMATEMETHODINVECTORCONTROLTECHNIQUEWITHOUTVELOCITYGENERATOR,BESIDESBASISMATHEMATICALMODELCOMPUTATIONELECTRICMOTORROTATIONALSPEED,ATPRESENTTHEMOREAPPLIEDARETHEMODELTOREFERAUTOADAPTEDMETHODANDEXPANDSTHEKALMANFILTERI

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