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Dr.SchützeIDTM2005-09Page1IPOSIM6IPOSIM6IIGBTGBTPOPOwerwerSIMSIMulationulationTheactualprogramversionisavailableon(Products&Solutions/SimulationTools)Dr.SchützeIDTM2005-09Page2IPOSIMDimensioningprogramIPOSIMforlossandthermalcalculationofeupecmodules¾IPOSIMperformsanapproximatecalculationofswitchingandconductionlossesforIGBTsandfree-wheelingdiodesinathreephaseinverterconfiguration.¾IPOSIMworksundertheassumptionofasinusoidaloutputcurrentanduseslinearapproximation¾IPOSIMisaquickselectiontoolforeupecIGBTmodulesDr.SchützeIDTM2005-09Page3IPOSIMinputparametersDr.SchützeIDTM2005-09Page4IPOSIMoutputThecalculationresultsindiagramswhichareshowinganestimationof¾theaveragepowerlossesversustheRMSphaselegcurrentatsinusoidalcurrents¾thetemperaturedistributionbetweenjunctionandambient¾lossdistribution(staticanddynamiclosses)¾calculationofcompleteloadcyclesThermallimitsofIGBTanddiodepartofthemoduleareconsidered.IPOSIMappliesaneasytouse,fastandatthesametimerelativelyexactmethodundersinusoidaloutputconditions.ThisfulfilstheengineersneedforfirstestimationsonlossesandthermallimitsoftheconsideredIGBTmodule.Dr.SchützeIDTM2005-09Page5IPOSIMinputparameterfieldson„autom.selection“3:selectoneofthepre-selectedmodules1:chooseparameters2:watchthelimits…and/orselectoneoftheavailablehousingsDr.SchützeIDTM2005-09Page6IPOSIMinputparameterfieldson„selectedmodule“thebeforeselectedmoduleisactiv1:chooseparameters2:watchthelimitsDr.SchützeIDTM2005-09Page7IPOSIMdiagramphaselegcurrentvs.averagelosseshighestallowedIGBT(ordiode)RMSphaselegcurrentatthegivenoperationconditions.Thecrosspointbetweentheblue(orred)solidlineandtheblue(orred)dottedlinedeliversthehowtoreadthediagram:phaselegcurrent[Arms]diagrambasedontypicaldevicedata@Tj=125°Caveragelossesforsinusoidaloutputcurrentat2000HzswitchingfrequencyBSM50GB170DN2averagelossesPav[W]thermallimitdiodethermallimitIGBTaveragelossesofIGBTordiodeinverterphase-legcurrent(RMS)calculateddiodelossescalculatedIGBTlossesDr.SchützeIDTM2005-09Page8IPOSIMsheet„temperaturedistibution“2:specifycoolingconditions1:chooseIGBTordiodepre-selectedoperationpointmax.currentforTj=125°CDr.SchützeIDTM2005-09Page9IPOSIMdiagram“temperaturedistribution”junctionambientRthjcRthchRthhaTjmaxTaDr.SchützeIDTM2005-09Page10IPOSIMdiagram„temperatureripple“shapeoflosses(sinusoidal)junctiontemperaturewithrippleDr.SchützeIDTM2005-09Page11IPOSIMsheet„temperatureripple“junctionambientRthjcRthchRthhaTjTcThDr.SchützeIDTM2005-09Page1205010015020025001020304050607080totallosses(IGBT)/Wstaticlosses(IGBT)/Wdynamiclosses(IGBT)/Wtotallosses(diode)/Wstaticlosses(diode)/Wdynamiclosses(diode)/WIPOSIMdiagram“lossdistribution”distributionofdynamicandstaticlossesforIGBTanddiodevs.phaselegcurrentphaselegcurrent(Arms)averagelosses(W)totallossesandthesplitinto…staticsharedynamicshareDr.SchützeIDTM2005-09Page13IPOSIMsheet„results“useabovecellforcalculationofintermediatecurrentvalues!Dr.SchützeIDTM2005-09Page14IPOSIMsheet„loadcyclecalculation“enterupto50setsofdataforaloadcycleenteratimeconstantfortheheatsinkDr.SchützeIDTM2005-09Page15IPOSIMsheet„loadcyclediagrams“voltagesandcurrentslossestemperaturesDr.SchützeIDTM2005-09Page16SummaryIPOSIMisaneasytouseEXCELbasedprogramwhichallowsthecustomertomakeafirstestimationoflossesandselectmodulesaccordingly.IPOSIM6-0a.xlsIPOSIMloadcycles.xlsIPOSIM6.pdfDr.SchützeIDTM2005-09Page17IPOSIMdisclaimerIPOSIMdevicedataarebasedonvaluesgivenintherespectiveIGBTmoduledatasheet.TheproductdataaswellasthedatausedinIPOSIMmaybesubjecttochanges,improvementsorcorrectionswithoutpriornotice.Calculationsarebasedonlinearapproximations.Detailedinformationonthecalculationaregivenonthefollowingpages.OperatingconditionsmaydifferfromsimulationassumptionsinseveralaspectslikelevelofDC-link,appliedgatevoltageandgateresistor,caseandjunctiontemperatureaswellasthepowercircuitstrayinductance.Thereforedeviationsofparametersandassumptionsusedforthesimulationandtherealapplicationmayexist.eupeccannottakeanyresponsibilityorliabilityfortheexactnessorvalidityoftheprogramsresult.Theprogramcannotreplaceadetailedreflectionofthecustomersapplicationwithallofitsoperatingconditions!