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1、河南理工大学万方科技学院本科毕业论文河南理工大学万方科技学院电气与自动化工程系2012届毕业生英文文献专业：电气工程及其自动化班级：08电气6班学号：0828100023姓名：叶国印时间：2012年5月31日13河南理工大学万方科技学院本科毕业论文外文资料与中文翻译外文资料：Converterreferencedesign(1)ConverterSelection:Selectiontodeterminethefrequencyconverterwhenthefollowingpoints:1)Thepu
2、rposeofavariablefrequency;constantpressuretocontrolorconstantcurrentcontrol.2)theloadconvertertypessuchasleavesorpumpvolumepumps,withspecialattentiontoloadtheperformancecurve,theperformancecurveofthedecisionofthewaysandmeans.3)thefrequencyconverterandload
3、matchingVoltagematch:aratedvoltageconverterwitharatedvoltagelinewiththeload.Currentmatches:ordinarypump,theratedcurrentinverterandmotorratedcurrentmatch.Forspecialloadsuchasdeep-waterpumps,andsoonneedtorefertotheelectricalperformanceparameterstodeterminet
4、hemostcurrentinvertercurrentandGuozainengli.Torquematch:inthiscaseconstanttorqueloadorslowdownwhenthedevicemayhaveoccurred.4)theuseofhigh-speedmotordriveinverter,becauseofthehigh-speedmotor,anti-small,highharmonicsleadtoincreasedoutputcurrentvalueincrease
5、s.Soforhigh-speedmotorinverterSelection,itscapacitytobeslightlylargerthantheordinarymotorselection.5)Ifthefrequencyconvertertoalongcablerun,thistimetotakemeasurestocurbthelongcabletotheimpactofcapacitivecoupling,inadequateeffortstoavoidconverter,sointhisc
6、ase,thedrivetoenlargethecapacityofafileortheconverterOutputinstalledoutputreactor.6)Fortheapplicationofsomespecialoccasions,suchashightemperatures,highaltitude,atthistimewouldcausethedownconvertercapacity,thedrivetoenlargethecapacityofablock.13河南理工大学万方科技学
7、院本科毕业论文(2)invertercontrolschematicdesign:1)FirstconfirmationoftheinstallationenvironmentConverterOperatingtemperature:high-powerconverteristheinternalelectroniccomponents,vulnerabletotheeffectsoftemperature,productgeneralrequirementsfor0~55℃,butinordertoe
8、nsurethesafe,reliable,theuseofroomtobetakenintoaccount,thebestcontrolin40℃below.Inthecontrolbox,theconverterboxshouldgenerallybeinstalledintheupperandstrictlycomplywiththeManualofinstallationrequirements,absolutelyn
