ANSYSWorkbench電磁場分析例子課件

1、ANSYS Workbench 9.0 ElectromagneticsPaul Lethbridge第1頁，共37頁。ContentsWorkbench ElectromagneticsWorkbench Emag RoadmapDesign ModelerEnclosure SymmetryWinding BodiesWinding ToolSimulation第2頁，共37頁。Workbench Emag Roadmap LF Emag capability will be exposed over several release cycles:3D Magnetostatics (9.

2、0)3D Current conduction (10.0)3D Electrostatics Circuit elementsTime transient & 2DWorkbench v9.0 is the first release with electromagnetic analysis capability. Support solid and stranded (wound) conductorsAutomated computations of force, torque, inductance, and coil flux linkage.Easily set up simul

3、ations to compute results as a function of current, stroke, or rotor angle.Workbench Emag capability is mapped to & accessed via: ANSYS Emag (stand alone or enabled task) ANSYS Multiphysics license keys.第3頁，共37頁。Workbench Emag Markets Target markets: Solenoid actuatorsPermanent magnet devicesSensors

4、Rotating Electric machinesSynchronous machinesDC machinesPermanent magnet machines第4頁，共37頁。ContentsWorkbench ElectromagneticsWorkbench Emag RoadmapDesign ModelerEnclosure SymmetryWinding bodiesWinding ToolSimulation第5頁，共37頁。Enclosure & Fill ToolsDesign Modeler (DM) includes two features to allow a u

5、ser to create a volumetric “field” body associated with a solid model. Enclosure tool: Released at 8.0. This tool is used to completely enclose the bodies of a model in a material typically required for an Emag analysis. Fill Tool: Released at 9.0 (Beta at 8.1). Similar function to enclosure, but on

6、ly fills interior cavities. Example of a hemispherical enclosure around an electromagnet第6頁，共37頁。The Fill feature create a new frozen body to fill the space occupied by a hole or cavity. Useful for interior cavity electromagnetic applications. Fill Feature第7頁，共37頁。Enclosure SymmetryFeature: The Encl

7、osure feature now supports symmetry models when the enclosure shape is a box or a cylinder: Up to 3 three symmetry planes can be specified. Full or partial models can be included in the Enclosure. During the model transfer from DesignModeler to Simulation, the enclosure feature with symmetry planes

8、forms two kinds of named selections: Open Domain Symmetry Plane第8頁，共37頁。ContentsWorkbench ElectromagneticsWorkbench Emag RoadmapDesign ModelerEnclosure SymmetryWinding bodiesWinding ToolSimulation第9頁，共37頁。Winding Bodies & Tool Feature: Design Modeler (DM) includes two new tools to allow a user to ea

9、sily create current carrying coils:Winding Bodies: Used to represent wound coils for source excitation. The advantage of these bodies is that they are not 3D CAD objects, and hence simplify modeling/meshing of winding structures. Upon “attach to Simulation”, Winding Bodies are assigned as Conductor

10、bodies.Winding Tool: Used to create more complex coils for motor windings. The Winding Tool uses a Worksheet table format to drive the creation of multiply connected Winding Bodies. Or a user can read in a text file created by MSExcel. Benefits: Very easy to use, rapid creation of coil windings. 第10

11、頁，共37頁。Winding BodiesA line body can be promoted to a winding body. Turns and cross-section (CS) dimensions are enteredWinding cross-section displayedTangent orientation vector (blue arrow) defines direction of current. 第11頁，共37頁。Winding ToolComplex coil windings may be created using the Winding Too

12、l: The Winding Tool inserts a “Winding#” into the model tree. A “Details” view is used for geometric placement.第12頁，共37頁。Winding ToolEach Winding consists a number of related Winding Bodies.The related Winding Bodies are shown in the Parts/Bodies branch:Winding Bodies第13頁，共37頁。Winding Table File Eac

13、h Winding has a Winding Table File associated with it. The Winding Table File can be created directly in DM The Winding Table File can be exported to or imported from a text file. Each row corresponds to a created Winding Body 第14頁，共37頁。Winding Table File The Winding Table File can be exported to or

14、 imported from a text file. 第15頁，共37頁。Winding Tool Example Winding 1 highlighted with rotor Complete DC Motor model第16頁，共37頁。Winding Options Coils may have different radii between IN & OUT slots Multiple coils may be stacked in the same slot第17頁，共37頁。Winding Options - Skew A skew angle may be identi

15、fied for the coil winding slots Many motor designs employ a skewed coil form.第18頁，共37頁。Winding Slot Clash DetectionWinding Tool automatically detects if the coil clashed with another part and warns the user第19頁，共37頁。ContentsWorkbench ElectromagneticsWorkbench Emag RoadmapDesign ModelerEnclosure Symm

16、etryWinding bodiesWinding ToolSimulationTools LayoutWinding bodiesMaterial PropertiesAir Gap Mesh SizingConductorsSolution第20頁，共37頁。Simulation Tools LayoutElectromagnetic ToolbarSimulation Environment:Emag boundary conditionsConductor source excitationSolution ResultsVoltageCurrent DensityFieldForce

17、TorqueInductance Flux linkage第21頁，共37頁。Emag Simulation Wizard Interactively walks a user through required analysis steps.第22頁，共37頁。Winding Body Transfer in SimulationWinding bodies are automatically assigned to conductor bodies. From the Winding Tool, each Phase Winding is assigned as a unique condu

18、ctor.In this example, Conductor A consists of 2 winding bodies. 第23頁，共37頁。Material Property SupportBoth linear & nonlinear Emag materials are supported by Engineering Data: Soft materials (Steel, iron, etc.)Constant (isotropic)Laminated (orthotropic)Linear/nonlinear (single B-H curve) Hard materials

19、 (NdFeB, SmCo, Alnico)LinearNonlinear Library of 35 BH curves provided 35 common materials第24頁，共37頁。Materials BH Curve Library 第25頁，共37頁。Materials User BH Curves BH curves with up to 500 data points are supported第26頁，共37頁。Materials - Permanent MagnetsCoordinate systems are used to align the polariza

20、tion axis of a magnet. Cartesian and Radial Magnetization are supported.第27頁，共37頁。Air Gap Mesh SizingRequirement: . In an electromagnetics analysis models typically include narrow gaps between parts such as rotors and stators. It is important to have a refined mesh in these gaps. Feature: Air Gap Me

21、sh sizing. As for other mesh controls, air gaps are assigned under Advanced Controls in the Mesh Detail. Benefits: Easy to use mesh refinement, resulting in more accurate analysis results.第28頁，共37頁。Air Gap Mesh Sizing第29頁，共37頁。Conductor Objects identify conductors for excitation, inductance, and Post processing. Can be scoped to solid bodies (solid conductors), or Winding Bodies (wound coils)Excitation: Supports voltage and current loading for solid conductors. Current and phase angle are supported for