该变压器模型采用EE型铁芯,通入单向交流电,通过maxwell的3D模型构建为两层,分为初级和次级同轴绕制。1.建模(Model)ProjectInsertMaxwell3DDesignFileSaveastransformer选择求解器类型:MaxwellSolutionTypeMagnetostatic创建变压器铁芯框架DrawBoxPosition:(-5.5,-15,0)Box尺寸:(XSize,YSize,ZSize)(11,30,26)DrawBoxPosition:(-5.5,5.5,5)Box尺寸:(XSize,YSize,ZSize)(11,4.5,16)选中Box2EditDuplicateAroundAxisAxis:ZAngle:180degTotalnumber:2选中Box1,Box2,Box2_1ModelerBooleanSubtractBlankParts:Box1ToolParts:Box2,Box2_1不要选:“Clonetoolobjectsbeforesubtracting”DrawBox(创建Gap(缺口))Position:(-5.5,15,12.98)Box尺寸:(XSize,YSize,ZSize)(11,30,0.04)选中Box1,Box3ModelerBooleanSubtractBlankParts:Box1ToolParts:Box3不要选:“Clonetoolobjectsbeforesubtracting”选中Box1ModelerBooleanSeparateBodies将分离后的模型分别重命名为:“Core_up”(原Box1)和“Core_down”将两者的材料重设为:“ferrite”为铁氧体的材料属性。创建线圈初级绕组ModelerGridPlaneYZDrawRectanglePosition:(0,6,5.5)Box尺寸:(XSize,YSize,ZSize)(0,1,15)ModelerGridPlaneXYDrawRectanglePosition:(-6,-6,13)Box尺寸:(XSize,YSize,ZSize)(12,12,0)选中Rectangle2ModelerDeleteLastOperation(形成Rectangle1围绕的轨迹)选中Rectangle1,Rectangle2DrawSweepAlongPath(可以形成环形线圈)Angleoftwist:0degDraftAngle:0degDrafttype:Round次级绕组ModelerGridPlaneYZDrawRectanglePosition:(0,7.5,5.5)Box尺寸:(XSize,YSize,ZSize)(0,2,15)ModelerGridPlaneXYDrawRectanglePosition:(-7.5,-7.5,13)Box尺寸:(XSize,YSize,ZSize)(15,15,0)选中Rectangle4ModelerDeleteLastOperation选中Rectangle3,Rectangle4DrawSweepAlongPathAngleoftwist:0degDraftAngle:0degDrafttype:Round将Rectangle2和Rectangle4重命名为:Coil_in,Coil_out将所有Coil的材料改为Copper创建激励电流加载面(CreateSection)选中所有线圈ModelerSurfaceSection选中YZ平面ModelerBooleanSeparateBodiesEditDelete(删除多余的面)将生成的截面重命名为:Section1,Section2创建计算区域(Region)DrawRegion2.设置激励(AssignExcitation)选中内层线圈截面:Section1Maxwell3DExcitationsAssignCurrentName:chujiValue:10AType:Stranded选外层线圈截面:Section2Maxwell3DExcitationsAssignCurrentName:次级Value:15AType:Stranded3.设置自适应计算参数(CreateAnalysisSetup)Maxwell3DAnalysisSetupAddSolutionSetup最大迭代次数:Maximumnumberofpasses:10误差要求:PercentError:1%每次迭代加密剖分单元比例:RefinementperPass:30%设置非线性残差:nonlinearresidual:0.0014.设置计算参数(AssignExecutiveParameter)MaxwellParametersAssignMatrix弹出Matrix窗口在Setup子菜单下,include栏中确认打钩在PostProcessing子菜单下,Turns栏中初级对应的改为30Turns栏中次级对应的改为300设置参数ForceMaxwellParametersAssignForce点击OK。网格剖分的话,由于模型简单,用软件自己剖分就好了。5.Check&Run6.查看结果Maxwell3D/result/solutiondata线圈受力。电感信息选中物体,执行Maxwell3D/Fields/Plotmesh命令,可以图形显示变压器模型剖分情况。选中物体,执行Maxwell3D/Fields/Fields/B,选中Object,点击Done