机械英文外文翻译现代电力电子及电源技术的发展.docx
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机械英文外文翻译现代电力电子及电源技术的发展.docx
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机械英文外文翻译现代电力电子及电源技术的发展
Developmentofmodernelectricelectronandpowertechnology
Modernpowertechnologytouseelectricandelectronicsemiconductordevice,utomaticallycontrolsynthetically,computer(microprocessor)technologyandelectromagneticmulti-disciplinaryedgeoftechnologypayandtechnology.Playakeyroleinthepowerofvariouskindsofhighquality,high-efficient,highdependability,itistheconcreteapplicationofthemodernelectricandelectronictechnology.Atpresent,theelectricelectronisregardedasenergy-conservation,festivaljust,automation,intelligent,foundationthattheelectromechanicsisintegrated,developinhighfrequencyofapplicationtechnology,hardwarestructuremodule,greendirectionofpropertiesofproduct.Inthenearfuture,,economy,practicalthatelectricandelectronictechnologywillmakethetechnologyofthepowerriper,realizethatwithhighefficiencyandcombiningtogetherhigh-qualitilywiththeelectricity.
Developmenttrendofthehigh-frequencyswitchpower
Intheapplicationinelectricandelectronictechnologyandvariouskindsofpowersystems,thepowertechnologyoftheswitchisinthekeyposition.Astoelectroplatingthepowerlarge-scalyandelectrolytically,thetraditionalcircuitisveryhugeandcumbersome,ifitishightoadoptswitchpowertechnologyonce,itsvolumeandweightwillalldropbyalargemargin,andcanimprovetheutilizationefficiencyofthepower,savematerials,loweringcostsgreatly.Intheelectricautomobileandfrequencyconversionaretransmitted,itisduetothepowertechnologyoftheswitchevenmore,changepowerconsumingfrequencythroughtheswitchpower,thusreachalmostidealloadandmatchanddrivecontrolling.Powertechnologyofthehigh-frequencyswitch,itisthekeytechnologyofvariouskindsofhigh-powerswitchpower(goagainstandturnintowelder,communicationpower,highfrequencyandheatthepower,laserinstrumentpower,electricoperatingpoweretc.)evenmore.
Communicationusesthehigh-frequencyswitchpower.Therapiddevelopmentofcommunicationindustryhaspromotedthedevelopmentofcommunicationpowergreatly.Theswitchpowerandtechnologyofhigh-frequencyminiaturizationhavealreadybecomethemainstreamoftheelectricpowersystemofmoderncommunication.Amongcommunicationfield,callrectifieronepowerusually,anddirectcurrent-directcurrent(DC/DC)changercallthepower2times.Onefunctionofpowersingle-phaseorthreephasesexchangeelectricwirenettingisitmarkpersonwhoclaimfordirectcurrentsourceof48Vtovary.Inoncepowerthattheprogram-controlexchangerusesatpresent,
Traditionalowntoreplacehigh-frequencyswitchpowersteadyvoltageplugofaccusingofetc.,high-frequencyswitchpower(callswitchrectifierSMRtoo)workthroughMOSFETorhighfrequencyofIGBT,thefrequencyoftheswitchisgenerallycontrolledwithintherangeof50-100kHz,realizethehighefficiencyandminiaturization.Inrecentyears,thecapacityofpoweroftheswitchrectifierisexpandingconstantly,theunitisownfrom48V/12incapacity.5A,48V/20Aareexpandedto48V/200A,48V/400A.
Becauseintegratedcircuitsusedarevariousinstyleinthecommunicationequipment,itsvoltageofpowerhasnothingincommonwitheachother,adopthigh-frequencyDC-DCofthedensityofhighpowertoisolatethepowermoduleinthecommunicationelectricpowersystem,variouskindsofdirectcurrentsneededarepressedtovaryfromvoltageofmiddlebusbar(generallyfor48Vdirectcurrent),inthisway,canreduceandloss,convenientsafeguardinggreatly,anditisveryconvenienttoinstall,increase.Generallymountedoncontrolpanelofthestandarddirectly,therequisitionforpowertwotimesisthedensityofhighpower.Becausetheconstantincreaseofthecapacityofcommunication,thecapacityofthecommunicationpowerwillincreaseconstantly.
1.Highfrequency
Theorybetweenanalysisandpracticalexperienceindicateelectricvoltagetransformer,inductance,volumeofelectriccapacityofproductweightininverseproportiontosquarerootofpowersupplyfrequency.So50Hzbring20kHzuptofrequentlyfromworkerfrequencyasus,raisetimeof,volumeweight,powerconsumingofequipmentdropto5thattheworkerdesignedsol0%frequently.Nomattergoagainstthebecomingtyperectificationwelder,ortheswitchtyperectifierthatthecommunicationpowerused,allonthebasisofthisprinciple.Same,tradition"rectificationtrade"electroplate,electrolytic,electricmachining,charge,isitchargetofloat,,electricityshutfloodgatecangoonthetransformationwith,etc.variouskindsofdirectcurrentpoweraccordingtothisprincipletoo,becoming"theswitchvaryingtypepower",itsmainmaterialcaneconomize90%orhigher,canalsoeconomizeonelectricityby30%ormore.Becausethegradualimprovementoftheelectronicdeviceoperatingfrequencyupperlimitofthepower,impelalotoftraditionalhigh-frequencyequipmentsolidstatethatadoptedtheelectrontubeoriginally,bringremarkableenergy-conservation,economizeonwater,economizingtheeconomicbenefitsofthematerial,canreflectthevalueofthetechnologicalcontentevenmore.
2.Module
Themodulehasmeaningoftworespects,firstrefertothemoduleofthepowerdevice,secondrefertothemoduleoftheunitofthepower.Ourcommondevicemodule,containbetweenEntranceone,Entrancetwo,EntrancesixandEntranceseven,includingthedeviceoftheswitchandthediodehasflowedwithitsparallelinsteadonecontinuouslyingisallthepowermodule(SPM)of"standard"infact.Inrecentyears,somecompaniesprotectthedriveofthedeviceoftheswitchthecircuitisputintothepowermoduletoo,havingformed"intelligentpowermodule(IPM)",notonlyhasnarrowedthevolumeofthecompletemachine,furthermorehashelpedthedesignofthecompletemachinemake.Infact,becausefrequencyconstanttoraise,causeleadwireparasiticinductance,dependontohavemoreseriousinfluenceselectriccapacityforaliving,leadtothefactheavyelectricstresstodevice(showastheovervoltage,theelectriccurrentburrpasses).Forimprovesystematicdependability,somemanufacturerdevelop"special-purposeuserhave"powermodule(ASPM),itallhardwaresinstallreachapieceofmoduleintheformofchipnearlyonecompletemachine,makethecomponentsandpartsnolongerhavetraditionalleadwirethatisjoined,suchmodule,throughthedesignofstrict,rationalhot,electricity,machinery,reachandoptimizetheperfectcondition.Special-purposeintegratedcircuitofuserthatitissimilartoinmicroelectronicses(ASIC).Solongaswritecontrollingthesoftwareintothemicroprocessorchipinthismodule,andthenfixthewholemoduleoncorrespondingradiator,formanew-typeswitchpowerdevice.Therefore,themodulepurposenotmerelyliesinbeingeasytouse,narrowthewholeorganismtoaccumulate,themoreimportantthingisthatcancelsthetraditionalline,itisminimumtobringtheparasiticparameterdownto,thusitislowesttodroptheelectricstressthatthedevicebearsto,improvesystematicdependability.Inaddition,theswitchpowerofhigh-power,becauseofthelimitationsofcapacityofthedevicewithincreasingtheredundantconsiderationwhichimprovesdependability,generallyadoptalotofindependentmoduleunitstoconnectinparallelandwork,adoptandflowtechnologically,allmodulesharetheloadcurrenttogether,onceacertainmodulelosesefficiencyamongthem,othermodulesharestheloadcurrentequally.Inthisway,notonlyhasimprovedthecapacityofpower,hasrespondedtotherequestthatthelargeelectriccurrentisexportedincaseoflimitedcapacityofdevice,andpassandincreasetheredundantpowermoduleverysmallinpowerastowholesystem,thegreatsystematicdependabilityofimprovement,evenincasethetroubleofthesinglemoduleappears,willnotinfluencethenormalworkofthesystemeither,andofferabundanttimeforrepairing.
1.3Digitization
Intheelectronictechnologyofthetraditionalpower,controlandisdesignedandworkedaccordingtotheanalogsignalpartly.Insix,theseventies,electricandelectronictechnologyistotallysetuponthebasisofimitatingthecircuit.However,thedigitalsignal,digitalcircuitseemmoreandmoreimportantnow,thetreatmenttechnologyofthedigitalsignalisperfecteddaybydayriply,demonstratemoreandmoreadvantages:
Theconvenientcomputerdealswithandcontrols,preventfromdistortionofanalogsignaldistortedreducingstrayinterference(improveanti-interferenceability),convenientsoftwarepackagedebuggingandtelemeteringmeasurementdistanttoadjustremotesensingofsignal,benefittechnologyofdiagnose,fault-tolerantbyoneselfingetc.toplantintotoo.So,ineight,the1990s,tothedesignsofallkindsofcircuitandsystem,simulationtechnologyisstilluseful,especially:
PrintButut,electromagneticgettingcompatibleproblemandpowerfactorpersonwhorevisesettlementofproblemthatmakeaplate,itisduetotheknowledgeofthesimulationtechnology,buttotheintelligentswitchpower,needleavingindigitizedtechnologywhenthecomputercontrol.
1.4Green
Thegreenofthepowersystemhasmeaningoftwolayers:
Economizeonelectricitynotablyatfirst,thisisitgenerateelectricitythriftofcapacitytomean,isitcauseimportantreasonofenvironmentalpollutiontogenerateelectricity,soeconomizingonelectricitycanreducethepollutionoftheenvironment;Itissecondlythepowercan(ornotthelittle)tolastingpollutionelectricwirenetting,makeInternational
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