资源描述：
《趋肤效应英文论文》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、EffectsoftheskinOne.Definition(skineffect)©I<—XLIncalculatingthewireresistanceandinduetanee,assuminghiscurrentisevenlydistributedinthecrosssection.Strictlyspeaking,thisassumptiononlyintheconductor'scurrentrateofchange(di/dt)iszerowhenestablished.Anotherargumentisthatcablethroughadirectcurrent(de
2、),canensurethatthecurrentdensityisuniform.Butaslongasthecurrentrateofchangeisverysmall,currentdistributionisstillconsideredtobeuniform.Forworkinlow-frequencythinwire,thepaperstillbeconfident.However,inhigh-frequencycircuits,thecurrentrateofchangeisverylarge,veryseriousstateofunevendistribution.H
3、igh・frequencycurrentinthewireinthemagneticfieldproducedbythecenterareaofthewireinducedthegreatestforce.Electromotiveforceinducedintheclosedcircuitinducedcurrent,inducedcurrentinthewirecenterofthemaximum.Becausetheinducedcurrentisalwaysreducedtheoriginaldirectionofthecurrent,forcingthecurrentisli
4、mitedtotheexternalsurfaceneartheconductor.Thisshouldenabletheconductorskineffecttypetransmissionlineathighfrequency(microwave),theefficiencyisverylow,becausethesignalalongitstransmission,theattenuationlarge.Thesurfaceofmetalpartsforhigh-frequencyhardening,theskineffectisappliedinindustryexamples
5、・IntroductionSkineffectisalsoknownastheHskineffect.11Alternatingcurrent(alternatingelectriccurrent,AC)throughaconductor,theroleoftheinductioncausedbynorvuniformcurrentdistributionontheconductorcrosssection,themorethesurfacecurrentdensityneartheconductor.Thisphenomenoniscalled"skineffect.HConduct
6、orskineffectsothattheeffectiveresistaneeincreases・Thehigherthefrequencytheskineffectismoresignificant.Whenhighfrequencycurrentthroughawire,thewirecanbeconsideredcurrentonlyathinlayeronthesurfaceofthemid-stream,thisisequivalenttotheconductorcross-sectiondecreases,resistaneeincreases.Sincethecentr
7、alpartofthewirealmostnocurrentflowthroughthiscentersectioncanberemovedinordertosavematerial.Therefore,inthehigh-frequencycircuitscanbeusedhollowconductorsinsteadofsolidwire.Inaddition,toreduceskineffect,inthehigh-frequencyci
