科技文献中英文翻译.docx
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科技文献中英文翻译.docx
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科技文献中英文翻译
IntelligentPowerSupply
英文
Withtherapiddevelopmentofelectronictechnology,applicationfieldofelectronicsystemismoreandmoreextensive,electronicequipment,therearemoreandmorepeopleworkwithelectronicequipment,lifeisincreasinglycloserelationship.Anyelectronicequipmentareinseparablefromreliablepowersupplyforpowerrequirements,theymoreandmoreisalsohigh.Electronicequipmentminiaturizedandlowcostinthepoweroflightandthin,smallandefficientfordevelopmentdirection.Thetraditionaltransistorsseriesadjustmentmanostatiscontinuouscontrollinearmanostat.Thistraditionalmanostattechnologymoremature,andtherehasbeenalargenumberofintegratedlinearmanostatmodule,hasthestableperformanceisgood,outputripplevoltagesmall,reliableoperation,etc.Butusuallyneedarebulkyandheavyindustrialfrequencytransformerandbulkandweightarebigfilter.
Inthe1950s,NASAtominiaturization,lightweightasthegoal,forarocketcarryingtheswitchpowerdevelopment.Inalmosthalfacenturyofdevelopmentprocess,switchpowerbecauseofissmallvolume,lightweight,highefficiency,widerange,voltageadvantagesinelectric,control,computer,andmanyotherareasofelectronicequipmenthasbeenwidelyused.Inthe1980s,acomputerismadeupofallofswitchpowersupply,thefirstcompletecomputerpowergeneration.Throughoutthe1990s,switchingpowersupplyinelectronics,electricalequipment,intotherapiddevelopment.Inaddition,largescaleintegratedcircuittechnology,andtherapiddevelopmentofswitchpowersupplywithaqualitativeleap,raisedhighfrequencypowerproductsof,miniaturization,modulartide.
Powerswitchtube,PWMcontrollerandhigh-frequencytransformerisanindispensablepartoftheswitchpowersupply.Thetraditionalswitchpowersupplyisnormallymadebyusinghighfrequencypowerswitchtubedivisionandthepins,suchasusingPWMintegratedcontrollerUC3842+MOSFETisdomesticsmallpowerswitchpowersupply,thedesignmethodofamorepopularity.
Sincethe1970s,emergedinmanyfunctioncompleteintegratedcontrolcircuit,switchpowersupplycircuitincreasinglysimplified,workingfrequencyenhancesunceasingly,improvingefficiency,andforpowerminiaturizationprovidesthebroadprospect.Threeendoff-linepulsewidthmodulationmonolithicintegratedcircuitTOP(ThreeswitchLine)willTerminalOffwithpowerswitchMOSFETPWMcontrolleronepackagetogether,hasbecomethemainstreamofswitchpowerlCdevelopment.AdoptTOPswitchlCdesignswitchpower,canmakethecircuit
simplified,volumefurthernarrowing,costalsoisdecreasedobviousiy.
Monolithicswitchingpowersupplyhasthemonolithicintegrated,theminimalistperipheralcircuit,bestperformanceindex,noworkfrequencytransformercanconstituteasignificantadvantageswitchingpowersupply,etc.AmericanPl(with)companyinPowerinthemid1990sfirstlaunchedthenewhighfrequencyswitchingPowersupplychip,knownasthe"topswitchPower",withlowcost,simplecircuit,higherefficiency.Thefirstgenerationofproductslaunchedin1994representedTOP100/200series,thesecondgenerationproductistheTOPSwitch-debutedin1997П.Theaboveproductsonceappearedshowedstrongvitalityandhegreatlysimplifiesthedesignof150Wfollowingswitchingpowersupplyandthedevelopmentofnewproductsforthenewjob,also,highefficiencyandlowcostswitchpowersupplypromotionandpopularizationcreatedgoodcondition,whichcanbewidelyusedininstrumentation,notebookcomputers,mobilephones,TV,VCDandDVD,perturbationVCR,mobilephonebatterychargers,poweramplifierandotherfields,andformvariousminiaturization,density,onpricecancompetewiththelinearmanostatAC/DCpowertransformationmodule.
Switchingpowersupplytointegrateddirectionoffuturedevelopmentwillbethemaintrend,powerdensitywillmoreandmorebig,toprocessrequirementswillincreasinglyhigh.Insemiconductordevicesandmagneticmaterials,nonewbreakthroughtechnologyprogressbeforemajormightfindithardtoachieve,technologyinnovationwillfocusonhowtoimprovetheefficiencyandfocusonreducingweight.Therefore,craftlevelwillbeinthepositionofpowersupplymanufacturinghigherin.Inaddition,theapplicationofdigitalcontrolICisthefuturedirectionofthedevelopmentofaswitchpower.ThistrustinDSPforspeedandanti-interferencetechnologyunceasingenhancement.Asforadvancedcontrolmethod,nowtheindividualfeelshaven'tseenpracticabilityofthemethodappearsparticularlystrong,perhapswiththepopularityofdigitalcontrol,andtherearesomenewcontroltheoryintoswitchingpowersupply.
(1)Thetechnology:
withhighfrequencyswitchingfrequenciesincrease,switchconvertervolumealsodecrease,powerdensityhasalsobeenboosted,dynamicresponseimproved.SmallpowerDC-DCconverterswitchfrequencywillrisetoMHz.Butastheswitchfrequencyunceasingenhancement,switchcomponentsandpassivecomponentslossincreases,high-frequencyparasiticparametersandhigh-frequencyEMIandsoonthenewissueswillalsobecaused.
(2)Softswitchingtechnologies:
inordertoimprovetheefficiencyofnon-linearityofvarioussoftswitch,commutationtechnicalapplicationandhygiene,representativeofsoftswitchtechnologyispassiveandactivesoftswitchtechnology,mainlyincludingzerovoltageswitch/zerocurrentswitch(ZVS/ZCS)resonance,quasiresonant,zerovoltage/zerocurrentpulsewidthmodulationtechnology(ZVS/ZCS-PWM)andzerovoltagetransition/zerocurrenttransitionpulsewidthmodulation(PWM)ZVT/ZCT-technical,etc.Bymeansofsoftswitchtechnologycaneffectivelyreduceswitchlossandswitchstress,helpconvertertransformationefficiency.
(3)Powerfactorcorrectiontechnology(ICsimplifiesPFC).AtpresentmainlydividedintoICsimplifiesPFCtechnologypassiveandactiveICsimplifiesPFCtechnologyusingICsimplifiesPFCtechnologytwokindsbig,IGsimplifiesPFCtechnologycanimproveAC-DCchangedeviceinputpowerfactor,reducetheharmonicpollutionofpowergrid.
(4)Modulartechnology.Modulartechnologycanmeettheneedsofthedistributedpowersystem,enhancethesystemreliability.
(5)Lowoutputvoltagetechnology.Withthecontinuousdevelopmentofsemiconductormanufacturingtechnology,microprocessorandportableelectronicdevicesworkmoreandmorelow,thisrequiresfutureDC-DGconvertercanprovidelowoutputvoltagetoadaptmicroprocessorandpowersupplyrequirementofportableelectronicdevices
Peopleinswitchingpowersupplytechnicalfieldsareedgedevelopingrelatedpowerelectronicsdevice,thesideoffrequencyconversiontechnology,developmentofswitchbetweenmutualpromotionpushswitchpowersupplywithmorethantwoyeargrowthtowardlight,digitalsmall,thin,lownoiseandhighreliability,anti-interferencedirection.SwitchingpowersupplycanbedividedintotheAC/DCandDC/DCtwokindsbig,alsohaveAC/ACDC/ACasinverterDC/DCconverterisnowrealizemodular,anddesigntechnologyandproductionprocessathomeandabroad,arematureandstandardization,andhasapprovedbyusers,buttheAC/DCmodular,becauseofitsowncharacteristicsintheprocessofmakingmodular,meetmorecomplextechnologyandcraftmanufactureproblems.Thefollowingtwotypesofswitchpowersupplyrespectivelyonthestructureandpropertiesofthis.
Switchingpowersupplyisthedevelopmentdirectionofhighfrequency,highreliability,lowconsumption,lownoise,anti-jammingandmodular.Becauselightswitchpower,small,thinkeytechniquesarechanged,sohighoverseaseachbigswitchpowersupplymanufactureraredevotedtothedevelopmentofnewhighintelligentsynchronousrectifier,especiallytheimprovementofsecondarydevicesofthedevice,andpowerlossofZnferrite(Mn)material?
Byincreasingscientificandtechnologicalinnovation,toenhanceinhighfrequencyandlargermagneticfluxdensity(Bs)cangethighmagneticundertheminiaturizationof,andcapacitorisakeytechnology.SMTtechnologyapplicationmakesswitchingpowersupplyhasmadeconsiderableprogress,bothsidesinthecircuitboardtoensurethatdecoratecomponentsofswitchpowersupplylight,small,thin.ThehighfrequencyswitchingpowersupplyofthetraditionalPWMmustinnovateswitchtechnology,torealizetheZCSZVS,softswitchtechnologyhasbecomethemainstreamofswitchpowersupplytechnical,andgreatlyimprovetheefficiencyofswitchpower.Forhighreliabilityindex,America'sswitchpowerproducers,reducebyloweringoperatingcurrentmeasuressuchasjunctiontemperatureofthedevice,inordertoreducestressthereliabilityofproductsmadegreatlyincreased.
Modularityisofthegeneraldevelopmentofswitchpowersupplytrendcanbemodularpowercomponentdistributedpowersystem,canbedesignedtoN+1redundantsystem,andrealizethecapacityexpansionparallel.Accordingtoswitchpowerrunninglargenoisethisonedefect,ifseparatethepursuitofhighfrequencynoisewillincreaseitswiththepartialresonance,andtransformcircuittechnology,highfrequencycanberealizedintheoryandcanreducethenoise,butpartofthepracticalapplicationofresonantconversiontechnologystillhaveatechnicalproblem,sointhisareastillneedtocarryoutalotofwork,inordertomakethetechnologytopractionalutilization.
Powerelectronictechnologyunceasinginnovation,switchpowersupplyindustryhasbroadprospectsfordevelopment.TospeedupthedevelopmentofswitchpowerindustryinChina,wemustwalkspeedoftechnologicalinnovationroad,combinationwithChinesecharacteristicsinthejointdevelopmentpath,for
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