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1、JournalofMagnetismandMagneticMaterials242–245(2002)212–215Newlydevelopedelectricalsteelforhigh-frequencyuseM.Komatsubara,K.Sadahiro,O.Kondo,T.Takamiya*,A.HondaElectricalSteelResearchDepartment,TechnicalResearchDivision,KawasakiSteelCorporation,Mizushima
2、,Kawasakidori1-chrome,Kurashiki712-8511,JapanAbstractForhigh-frequencyappliances,anewmagneticmaterialwasdeveloped,anditspropertieswereinvestigatedandcomparedwithconventionalelectricalsteeland6.5%Sisteel.Thenewmaterialhasextremelylowironlossathighfrequen
3、ciesover5kHzaswellas6.5%Sisteel,whichwasobtainedbyincreasingelectricresistivity,orbyreducingitseddycurrentloss.Generally,increasingresistivitymakessteelsbrittleanddeterioratestheirworkability.However,thedevelopedmaterialshowedagoodworkabilitywiththeeffe
4、ctofCraddition.Thismaterialhasagoodpropertyofpulseresponse,andalsoshowedanexcellentperformanceforpowerelectronicsdeviceusinganactive?lteroperatedat15kHz.r2002ElsevierScienceB.V.Allrightsreserved.Keywords:Siliconsteel;Device-motors;Magneticloss;Eddycurre
5、nts-loss;Electricresistivity;Transformers1.Introductionproperties,however,itshardnessistoolargetobewellworked.ProgresstowardhigherfrequenciesofelectricalRecently,anewelectricalsteelforhigh-frequencyapplianceswithmotorsisremarkable.Forexample,usehasbeend
6、evelopedintheKawasakiSteelCor-motorsinstalledincomputers,etc.,aredrivenathigherporation[2],itspropertiesaretobereportedinthisspeed,andhighprecisionandlowdissipationofpowerpaper.arerequired.Thereareanotherappliances,suchasswitchingsources,transformersand
7、reactorsinpowerelectronicsdemandinghigh-frequencymagneticmateri-als.Thus,theeffortfordevelopingnewmaterialsfor2.Experimentalmethodhigh-frequencyuseismadeinawide?eldofmaterials.Thestrongdemandexistsinelectricappliancesfor2.1.Specimensusedinthisexperiment
8、softmagneticmaterialsusedathighfrequenciesof1toseveraltensofkHz.Inthis?eld,therearegoodToreducehigh-frequencyironloss,onemethodistomaterialslikesoftferriteandamorphousmetal.How-increaseelectricresistivity,byincreasingcontentssuch
