在电力电子领域的磁技术-iv

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1、DPECTrainingCourseDeltaPowerElectronicsCenterMagneticsIntegrationTechniqueofPowerElectronicsByWeiChen,Dr.DeltaPowerElectronicsCenter,ShanghaiApril,2001BasicConceptofIntegratedMagnetics(IM)vWhatisIntegratedMagneticsvStructuralandFunctionalIntegrationvSomeExamplesofIMvIntegrate

2、dEMIFilter1WhatIsMagneticsIntegrationMagneticsIntegrationTointegrateseveralmagneticscomponentsononecorestructure.TointegratedifferentfunctionsofmagneticsintoonecorestructureBenefits1)Smallersize,2)lowercost,3)lesspartcount,4)efficiencyimprovementand5)newtopologyClassification

3、ofMagneticsIntegrationIntegratedMagnetics(IM)StructuralFunctionalIntegrationintegrationPCBPCBMagneticsForward+FlybackL+TXL+Lwindingcorecombination2WindingIntegrationwithPCBMagneticsPCBTransformersecondaryOutputinductorTransformerprimaryFilterchokeHybriddesignwithplanarmagneti

4、csIICbyPhilipsPowerinductorTransformer(4:2)PowerinductorCMchoke32-ModuleInterleavedQSWVRML1IL110IoIL2Load2L2IL1IL2T/2IoIntegratedSchemeforTwoInductorsF1F2TwodiscreteI1I2L2inductorsL1F1F0F2F1TwoinductorsI1I2puttogetherF2T/2L1L2FoF1F0F2TwoinductorI1I2de-coupledL1L2vTwoinductors

5、arede-coupledduetonoair-gapincentrallegvAreaofcentrallegisaboutthesameasthatinoutsidelegvCorelossincentrallegisreducedwithfluxripplecancellation4IntegratedStructureforTwoinductorsIL110IoIL2Load2120SimpleExamplesofFunctionalIntegrationFlybackTX/InductorTXwithlargeleakage(Lm+TX

6、)(Lk+TX)TXTX*Lk**Lm*CoupledInductorsML+L=>3LL1-ML2-M**L1L2MDecoupling5IntegratedCMandDMInductorLCMLDMCM:High-m,Lowsaturation(NoDCbias)DM:Low-m,Highsaturation(LargeDCbias)CommonwindingShortestcommonwindingShortestcommonwindingIndependentcorePartialcommoncoreShortestcommoncoreI

7、ndependentwindingIndependentcoreCMandDMInductancewithCaseICMFluxDMFluxPatentofMotorolaLighting(1994)81.27CMINDU1DMINDU60.8540.6Turns:70+7030.4fs:40K2CMINDU(mH)0.210000.20.40.60.811.2CURRENT(A)6CMandDMInductancewithCaseIICMANDDMINDUCTANCE2520Gap(0.48mm)15Gap(0.4mm)Gap(0.32mm)1

8、0Gap(0.24mm)CMINDU(mH)5Gap(0.16mm)Gap(0.08mm)000.10.20.30.40.50.60.7