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外文翻译--恒压供水变频器.DOC

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外文翻译--恒压供水变频器.DOC

ConstantpressurewatersupplyfrequencychangerThetransistorfrequencychangernotonlyovercamehasformerlyexchangedvelocitymodulationmanyshortcomings,moreoverthevelocitymodulationperformancemightcomparefavorablywiththedirectcurrentmotorvelocitymodulationperformance.Thethreephaseasynchronousmotorhastheservicetobeconvenient,meritandsoonpricesmalladvantage,powerandrotationalspeedadaptbreadth,itsfrequencyconversionvelocitymodulationtechnologyintheminiaturization,thelowcostandtheredundantreliableaspectholdstheobvioussuperiority.Totheendofthe80s,thealternatingcurrentmachinefrequencyconversionvelocitymodulationtechnologyrapidlydevelopsintoamaturetechnology,itwillsupplythealternatingcurrentmachinethelaborfrequencyalternatingcurrentsupplytoturndirectcurrentafterthedioderectification,againbycomponentandsoonIGBTorGTRmodulecounterwillturnthealternatingcurrentsupplywhichthefrequencymightmove,willdrivetheelectricalmachinerybythispowersourcetomoveunderthespeedchangecondition,andautomaticsuitablestrainloadcondition.Afteritchangedinthetraditionalindustrytheelectricalmachinerytostartonlycanbytheratedpower,decidetherotationalspeedthesolemovementway,thusachievedtheenergyconservationgoal.Themodernfrequencyconversionvelocitymodulationtechnologyappliesintheelectricpowerwaterpumpwatersupplysystem.Becausethefrequencyconversionvelocitymodulationhasthevelocitymodulationthephysicalcharacteristicswell,efficiencyhigh,velocitymodulationscopewide,precisionhigh,adjustingcharactercurvesmooth,maycontinualrealize,thesteadyvelocitymodulation,thevolumesmall,themaintenancesimpleisconvenient,theautomatedlevelhigheraseriesofprominentmeritsbuttimepeoplesfavor.Whenitappliesespeciallyintheairblower,thewaterpumpandsoonthelargecapacityload,mayobtaintheenergyconservationeffectwhichothervelocitymodulationwaysisunabletocompare.Thefrequencyconversionvelocitymodulationsystemmainequipmentisprovidesthefrequencyconversionpowersourcethefrequencychanger,thefrequencychangermaydivideintoexchangedirectcurrenttoexchangethefrequencychangerandtheexchangeexchangesthefrequencychangertwobigkinds,atpresentdomesticmostlyuseshandsoverisstraighthandsoverthefrequencychanger.Hasbeenpublishedsincethegeneralfrequencychanger,thefrequencyconversionvelocitymodulationtechnologyobtainedthewidespreadapplicationineachdomain.Thefrequencyconversionmodulatesvelocitythepermanentwaterlevelfeedwaterequipmentbyitsenergyconservation,security,highqualitymeritandsoonwatersupplyquality,causedourcountrytosupplywatertheprofessiontechnicalequipleveltostartfromthebeginningofthe90stoexperiencealeap.Theconstantpressure,thepermanentwaterlevelwatersupplyvelocitymodulationsystemrealizationwaterpumpelectricalmachinerysteplessspeedregulation,restsonwiththewaterlevelchangeregulatorsystemmovementparameter,inthewaterconsumptionchangeregulatorsystemmovementparameter,changeswhenthewaterconsumptionmaintainsthehydraulicpressuretobeconstantandthewaterlevelconstantlybysatisfiesthewaterusedrequest,isnowmostadvanced,thereasonableenergyconservationwatersupplysystem.Obtainedtheverybigdevelopmentinthepracticalapplication.Alongwiththeelectricpowerelectronictechnologyrapiddevelopment,thefrequencychangerfunctionmoreandmoreisalsostrong.Fullyuseseachkindoffunctionwhichinthefrequencychangersets,tothereasonabledesignfrequencyconversionvelocitymodulationconstantpressurefeedwaterequipment,reducesthecost,guaranteedaspectandsoonproductqualityhastheextremelyvitalsignificance.Intheshortseveralyears,thefrequencyconversionvelocitymodulationconstantpressurewatersupplysystemexperiencedthedevelopingprocesswhichconsummatedgradually,theearlytimehaspumpedthevelocitymodulationconstantpressuresystemtopumponlythevelocitymodulationsystemtoreplacegradually.Althoughonlypumpsthevelocitymodulationsystemdesignsimplereliable,butbecauseonlypumpstheelectricalmachinerydepthvelocitymodulationtocreatethewaterpump,theelectricalmachineryoperatingefficiencylowly,butpumpsthevelocitymodulationsysteminvestmentmoretosave,theoperatingefficiencyishigh,bytheactualproofisthemostsuperiorsystemdesign,veryquicklydevelopsintotheleadingproduct.TheSemensfrequencychangerdesignlevelcompareswithvariousbrandsfrequencychanger,thefunctionisformidable,impeccableIfagaincanfromthedesignconsiderwillserviceconvenienttothefuture,Thenatureandenhancedthecomponentsinthemanufactureselectionthequalityismostideal.TheSemensfrequencychangerrectificationunitpressureresistanceis1200V.Ifcanusepressureresistance1600Vtherectificationunit,Ithoughtcanenhancethestabilitygreatlyandreducethefailurerate.Guardsagainstthedisturbancethemeasuretowaitforstrengthens,SemensfrequencychangersometimescanbutcontrolbecauseofthedisturbancequestionthehosttheboardorI/TheOportburnt.Theconstantpressurewatersupplyseriesfrequencyconversionvoltmetersisfortheairblower,pumpskind,currentcapacityandthespecialpurposefrequencyconversionvoltmetersthepressurecontrolcharacteristicspeciallyandsoonaircompressorwhichbutdevelops.Thisaircrafttypehasthegeneralfrequencychangerthebasicfunction.Thisproductdesignhadmainlyconsideredtheenergyconservationandtheautomatedrequest,insetsattheautomaticenergyconservation,PID,simplePLCandfunctionandsoonRS485communicationconnection,mayfacilitateandPLC,thecomputerorthemainlinecarriesonthecommunication,theconvenientcustomeroperationandthemonitoring,atthesametimethiscompanyalsospeciallydevelopedonekindtoprocesstheconstantpressurewatersupplyspeciallythecontrolpanel,mightconvenientlybeusedtogetherwiththefarbiographypressuregauge.First,frequencyconversionconstantpressurewatersupplycharacteristic1st,thefrequencyconversionconstantpressureforthehydroenergyautomatic24hourmaintenancesconstantpressure,andautomaticallystartstherelaypumpaccordingtothepressuresignal,thesteplessadjustmentpressure,thewatersupplyqualityisgood,compareswiththetraditionalwatersupply,cannotcreatethepipenetworktoburstandthewatercockresonanceeffect.2nd,thestartissmooth,reducestheelectricalmachinerywaterpumptheimpact,lengthenedtheelectricalmachineryandthewaterpumpservicelife,hasavoidedinthetraditionalwatersupplyimpingementphenomenon.3rd,usesthefrequencyconversionconstantpressurewatersupplyprotectionfunctioncompletely,themovementisreliable,hasowespresses,haspressed,hasflowed,protectionfunctionandsoontheheat.5th,mayaccordingtotheuserneed,chooseeachkindofattachmentfunction,forexampleTheelectricalmachineryfixedtimetakesturns,functionandsoondormancy.Second,principleofworkThefrequencyconversionconstantpressurewatersupplysystemusesapotentiometerhypothesispressurealsotobepossibletousekneadingboardinteriorhypothesispressure,usesapressuretransmitterfeedbackis420mAexaminesinthepipenetworkthepressure,thepressuretransmittersendsinthesignalthefrequencychangerPIDreturnroute,afterPIDreturnrouteprocessing,sendsoutawatervolumetoincreaseorthereducedsignal,controlsthemotorrotationalspeed.Likeincertaindelaytime,pressureinsufficiencyoroversized,thendoesworkthefrequencythroughPLC/Thefrequencyconversioncut,causestheactualpipenetworkpressuretobeconsistentwiththehypothesispressure.Moreover,alongwiththewaterconsumptionreduction,thefrequencychangerautomaticreductionoutputfrequency,hasachievedtheenergyconservationgoal.Third,applicablescopeUsesthefrequencyconversionconstantpressurewatersupply,hasthehighlyeffectiveenergyconservation,thepressurestable,movementreliable,operationsimple,installmentconvenient,occupyingalandareaoffew,thenoiseislow,doesnothavethepollution,investslowly,benefithighermerit.Issuitablespeciallyfor1.Placetheandsoonguesthouse,office,apartment,inhabitantplotlifegivestheheatofhydrationwaterheatingsystem.2.Thehighriseconstruction,thelargescalecivilconstructionfirepreventiongivestheaqueoussystem.3.Industryandminingproductionenterprise.4.Eachkindofrunningwaterfactory.

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