基于散射參數(shù)的傳導(dǎo)電磁干擾建模方法研究.pdf

1、南京師范大學(xué)碩士學(xué)位論文基于散射參數(shù)的傳導(dǎo)電磁干擾建模方法研究姓名：陸婋泉申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：電工理論與新技術(shù)指導(dǎo)教師：趙陽(yáng)20100508AbstractAbstractAsthedevelopmentoftheelectricalandelectronictechniques，theconductedEMIproblemsarebecomingmoreandmoreseriousHowevertherearestillsomed

2、efectivenessintheexistingconductedEMImodelingmethodsfornoisediagnosisandsuppression，whichareinneedofadditionalequipmentandhavephraseinformationabsenceandlowaccuracyTheconductedEMImodelingmethodsbasedonscatteringparameter

3、(Sparameter)areproposedfornoiseseparatingnetworkcharacterizationmodeling，EMIfilerperformancemodelingandnoisesourceimpedancemodelingMoreoverfurtherstudyontheconductedEMInoisediagnosisandsuppressionmethodsarecompletedthrou

4、ghpracticalapplicationsFirstlythenoiseseparatingnetworkcharacterizationmodelingmethodbaseonSparameterispresentedandcomparedwiththespectrumanalyzermethodboththeoreticallyandexperimentallyThetestresultsofthetwomethodscoinc

5、idewellwitheachotherinamplitude，whichtestifytheeffectivenessoftheSparametermethodInthemeanwhile，thevectornetworkanalyzeristheonlyequipmentneededfortheSparametermethodwhichhastheadvantageofavoidingtheunexpecteddeviationre

6、sultedfromadditionalequipmentMoreoverthephraseofcharacterizationachievedbytheSparametermethodisthesupplementaryinformationfornoiseseparatingnetworkdescriptionSecondlytheEMIfilterperformancemodelingisstudiedbyusingSparame

7、terThecircuitmodelandthemodemodeloftheEMIfilterareconstructedandconnectedwiththeSparametermatrixTheperformanceofEMIfilterCanbederivedfromitsSparametersinproposedmethodforabetterEMIfilterdesignThirdlythenoisesourceimpedan

8、cemodelingbasedonSparameterisproposedtosolvetheimpedancematchingprobleminEMIfilterdesign，andthesetupforcommonmodenoiseandthedifferentialmodenoiseimpedanceextractionarediscussedindetailsrespectivelyTheimpedanceoftheknownr

9、esistance，capacitanceandinductancearetestedbytheproposedmethodandcomparedwiththeimpedanceanalyzertestresultFurthermore，thecommonmodeanddifferentialmodenoiseimpedanceofacommercialswitchmodepowersupplyaretestedforitsEMIfil

10、erdesignAtlast，theapplicationoftheconductedEMInoisediagnosisandsuppressionarestudiedintwocasesIncaseone，theEMInoiseofelectronicsystembasedonsinglechipmachinedescribedandanalyzed，whichshowsthecommonmodenoiseisdominatedThe