机械英文外文翻译现代电力电子及电源技术的发展.docx

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