ANSYS-Workbench-电磁场分析例子

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Winding Tool Example
Winding 1 highlighted with rotor
Complete DC Motor model
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Winding Options
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Contents
Workbench Electromagnetics
– Workbench Emag Roadmap
– Design Modeler
• Enclosure Symmetry • Winding bodies • Winding Tool
– Design Modeler
• Enclosure Symmetry • Winding Bodies • Winding Tool
– Simulation
© 2004 ANSYS, Inc.
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Workbench Emag Roadmap
• LF Emag capability will be exposed over several release cycles: – 3D Magnetostatics (9.0) – 3D Current conduction (10.0) – 3D Electrostatics Circuit elements – Time transient & 2D
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Fill Feature
• The Fill feature create a new frozen body to fill the space occupied by a hole or cavity.
• Useful for interior cavity electromagnetic applications.
Winding cross-section displayed
© 2004 ANSYS, Inc.
A line body can be promoted to a winding body. Turns and cross-section (CS) dimensions are entered
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– Simulation
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Enclosure & Fill Tools
Design Modeler (DM) includes two features to allow a user to create a volumetric “field” body associated with a solid model.
• Coils may have different radii between IN & OUT slots • Multiple coils may be stacked in the same slot
© 2004 ANSYS, Inc.
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Winding Options - Skew
• Workbench Emag capability is mapped to & accessed via:
– ANSYS Emag (stand alone or enabled task) – ANSYS Multiphysics license keys.
© 2004 ANSYS, Inc.
ANSYS Workbench 9.0 Electromagnetics
Paul Lethbridge
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Contents
Workbench Electromagnetics
– Workbench Emag Roadmap
– Upon “attach to Simulation”, Winding Bodies are assigned as Conductor 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.
© 2004 ANSYS, Inc.
Winding Bodies
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Winding Table File
• Each 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
• Fill Tool: Released at 9.0 (Beta at 8.1). Similar function to enclosure, but only fills interior cavities.
© 2004 ANSYS, Inc.
Example of a hemispherical enclosure around an electromagnet
– Simulation
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Winding Bodies & Tool
• Feature: Design Modeler (DM) includes two new tools to allow a user to easily create current carrying coils:
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Winding Table File
• The Winding Table File can be exported to or imported from a text file.
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Workbench Emag Markets
Target markets: • Solenoid actuators • Permanent magnet devices • Sensors • Rotating Electric machines
– Synchronous machines – DC machines – Permanent magnet machines
Winding Tool
Complex coil windings may be created using the Winding Tool: • The Winding Tool inserts a “Winding#” into the model tree. • A “Details” view is used for geometric placement.
– 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.
– Open Domain – Symmetry Plane
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Contents
Workbench Electromagnetics
– Workbench Emag Roadmap
– Design Modeler
• Enclosure Symmetry • Winding bodies • Winding Tool
• Benefits: Very easy to use, rapid creation of coil windings.
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Winding Bodies
Tangent orientation vector (blue arrow) defines direction of current.
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Winding Tool
Each Winding consists a number of related Winding Bodies. The related Winding Bodies are shown in the Parts/Bodies branch:
• Workbench v9.0 is the first release with electromagnetic analysis capability. – Support solid and stranded (wound) conductors – Automated computations of force, torque, inductance, and coil flux linkage. – Easily set up simulations to compute results as a function of current, stroke, or rotor angle.
• A skew angle may be identified for the coil winding slots • Many motor designs employ a skewed coil form.
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Winding Slot Clash Detection
• 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.
© 2004 ANSYS, Inc.
ANSYS, Inc. Proprietary
Enclosure Symmetry
•Feature: The Enclosure 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 forms two kinds of named selections: