Maxwell-Intro_17.0_WS5.1_PMSM_example

1©2016ANSYS,Inc.April26,2016Workshop5.1:PMSMExampleIntroductiontoANSYSMaxwell17.0Release2©2016ANSYS,Inc.April26,2016•PMSMExample–ThisworkshopwilldiscusshowtouseRMxprtinconnectiontoMaxwellinordertodevelopacompleteanalysisofaPMSM(PermanentMagnetSynchronousMachine).–Thefollowingtaskswillbeperformed:•CreatetheRMxprtmodel•RMxprtResultsAnalysis•CreatetheMaxwell2DModelfromRMxprt•Analyzethemodel•Review/Post-processMaxwell2Dresults•CreatetheMaxwell3DModelfromRMxprt•Analyzethemodelandmodifyexcitationstosavesimulationtime•AnalyzeMaxwell3DresultsOverview3©2016ANSYS,Inc.April26,2016•OpentheElectronicsDesktop2016•OpentheRMxprtexampleassm1.aedtunderFileOpenExamplesRMxprtassmassm1.aedtRMxprtModelSettings•SavetheFileinadifferentfolder,inordernottomodifythedefaultexample4©2016ANSYS,Inc.April26,2016•Themodelhassmalldimensionsand0.5kWratedpower–Inordertoincreasemachinepower,modifythesettingsasshowninthefollowingpictures,scrollingthemachineitems/menusfromuptodownRMxprtModelSettingsN.ofPoles:6Ref.Speed:1000rpmControlType:PWMMod.Index:0.8CarrierFreq.:100OuterDiam:340mmInnerDiam:225mmLength:100mmN.ofSlots:365©2016ANSYS,Inc.April26,2016RMxprtModelSettingsOuterDiam:224mmInnerDiam:35mmLength:100mmEmbrace:0.85Mag.Thickn.:6mmRatedOutput:224mmRatedVolt.:138mmRatedspeed:1000rpmCond.PerSlot:14CoilPitch:2N.ofStrands:11Limit.Fill.Fact.:0.99Hs0:1mmHs1:2mmHs2:30mmBs0:4mmBs1:10mmBs2:15mm6©2016ANSYS,Inc.April26,2016RMxprtModelSettings–Thefinalmachineandthewindingsetupshouldlookliketheonesdescribedinthefollowingpictures7©2016ANSYS,Inc.April26,2016AnalysisandResults–InProjectmanagerwindowRMBonSetup1Analyzetorunthesimulation–InProjectmanagerwindowRMBonSetup1Curvetoanalyzeresults8©2016ANSYS,Inc.April26,2016AnalysisandResults•InProjectmanagerwindowRMBonSetup1Performancetoanalyzeresults•AtFullLoadOperationthemostimportantdataare:–PeakLineInducedVoltage:139.6V–RMSPhaseCurrent:226.2A–Iron-CoreLoss:114.2W–ArmatureCopperLoss:4627W–TotalLoss:5973.4W–OutputPower:17421.9W–InputPower:23395.3W–Efficiency74.47%–TorqueAngle:78deg–MaximumOutputPower:17421.9WNotethatefficiencyconsidersalsothelossesindrivingconverterRMxprtsuggeststhat17.4kWisthemaximumpowerpossibletobeobtainedwiththatmachine9©2016ANSYS,Inc.April26,2016MaxwellDesignCreation•InProjectmanagerwindowRMBonSetup1CreateMaxwellDesign…•Createboththe2Dandthe3DModelNotethateverytimeamodeliscreated,alsotherelativeexternalcircuitisautomaticallycreated10©2016ANSYS,Inc.April26,2016Maxwell2DDesignInspection•Independentlyfrom2Dor3D,thesettingsaremostlyidentical–Expandthetreeforthe2Ddesignandscrollitfromuptodowntoinspectthesettings–DoubleclickonMotionSetup1andverifythespeedisconstantat1000rpm,startingpositionis-10degandmotiontypeissettoRotation–InspectBoundaries:VectorPotential1shouldbesetontheexternalstatorside,whileMasterandSlavearesetonthetwocutsides.–SlavemustbeBs=-BmMaster11©2016ANSYS,Inc.April26,2016Maxwell2DDesignInspection–DoubleclickonPhaseA,PhaseBandPhaseCWindingsandverifythesourcesaresettoExternalandconductorstoStranded–Thewindingselectionhighlightsthebelongingconductors12©2016ANSYS,Inc.April26,2016Maxwell2DDesignInspection–ClickoneachMeshoperationanverifythesettingsareasshowninthefollowingpictures–RMBoneachmeshoperationSelectAssignmenthighlightsthecorrespondingobjects13©2016ANSYS,Inc.April26,2016Maxwell2DDesignInspection–DoubleClickonSetup1anverifythesettingsareasshowninthefollowingpictures.InSolverTabmodifytheNonlinearResidualto1e-6–Maxwell2DExcitationsSetCoreLoss–ActivateCoreLosscalculationforStatorandRotorObjects–Maxwell2DExcitationsSetEddyEffects–Makesurenoobjectischecked14©2016ANSYS,Inc.April26,2016ExternalcircuitInspection–DoubleClickonMaxCir1toshowtheschematicusedfor2DdesignPWMControlLinktoMaxwellWindingsPhaseResistanceandLeakageInductance3-phaseInverterDiodesandswitchesmodels15©2016ANSYS,Inc.April26,2016Maxwell3DDesignInspection–Expandthetreeforthe3Ddesign–MotionSetup1isidenticalto2Ddesign–VectorPotentialBCisnotanymorepresent,duetodefault3Dsettings–MasterandSlavearesetonthetwocutSurfaces.–SlavemustbeHs=-HmMasterSlave16©2016ANSYS,Inc.April26,2016Maxwell3DDesignInspection–modifyExcitation–DoubleclickonPhaseA,PhaseBandPhaseCwindingsandmodifythesourcesfromExternaltoVoltage–Resistance:0.0301525W–Inductance:6.289e-5H–VoltagePhaseA:55*sin(2*pi*50*time+78deg)–VoltagePhaseB:55*sin(2*pi*50*time+78deg-120deg)–VoltagePhaseC:55*sin(2*pi*50*time+78deg-240deg)Notethat78degisthetorqueanglecalculatedinRMxprt17©2016ANSYS,Inc.April26,2016Maxwell3DDesignInspection–Meshoperationsaresimilarto2D(evenifvaluesaredifferent)andinaddictionthereisaCylindricalGaptreatmentfortheBandandaSurfPriorityfortheCoils18©2016ANSYS,Inc.April26,2016Maxwell3DDesignInspection–Setup1issimilarto2DDesign.InGeneralTagmodifyStoptimeto0.12secandTimestepto0.0005sec.InSolverTabmodifytheNonlinearResidualto1e-4–RMBonExcitationsSetCoreLoss–ActivateCoreLosscalculationforStatorandRotorObjects–RMBonExcitationsSetEddyEffects–Makesurenoobjectischecked19©2016ANSYS,Inc.April26,20162DModelResultsAnalysis–OutputmechanicalpowerOutputmechanicalPow