workbench电机电磁场有限元分析

10/1/2004
9.0 New Features
3
ANSYS v9.0
Motor Analysis in the Workbench Environment
Workshop
1) Bring up the enclosure tool as shown at right. This will be used to automatically create a mesh of the magnetic domain between and surrounding the imported geometry 2) Note the details that appear in the lower left pane after this selection is made. We will edit these default values.
Workshop
Setting clash detection to “yes” will bring up another row called “Bodies for Clash Detection” in the winding details pane. Click the cell to the right, highlight “rotor” in the tree, and click Apply. This will trigger a check for interference between the defined windings and the rotor stack.
Workshop
2
10/1/2004
9.0 New Features
7
ANSYS v9.0
Motor Analysis in the Workbench Environment
Use the Winding Tool Editor to bring up the “winding details” and “winding table” panes shown in the red boxes at right.
Workshop
2
10/1/2004
9.0 New Features
14
ANSYS v9.0
Motor Analysis in the Workbench Environment
Once the geometry is successfully attached in Design Simulation, define the current and phase angles for conductors A, B, and C as shown at right: Conductor A: 55 A 0 Conductor B: 55 A 120 Conductor C: 55 A 240 1
Workshop
1
2
10/1/2004
9.0 New Features
8
ANSYS v9.0
Motor Analysis in the Workbench Environment
In the winding details pane, click on the cell to the right of “Center Plane”, then select Plane6 from the tree, then click apply (step 3 at right). This positions/orients the windings so that predefined plane6 is the winding midplane. 2
Workshop
10/1/2004
9.0 New Features
12
ANSYS v9.0
Motor Analysis in the Workbench Environment
One nice way to visualize the windings is to right click on rotor in the tree and choose “Hide All Other Bodies” in the drop down list. Then, in the tree, click on any of the 6 individual coils comprising the winding (A.1, A.2, B.1, B.2, C.1, C.2). For example, the location of coil A.1 is shown below.
5
ANSYS v9.0
Motor Analysis in the Workbench Environment
After editing the details, right click on “Air” in the tree. In the drop down list that appears, left click on “Generate”. This will create a cylindrical volume of magnetic domain in which to immerse the imported parts.
Workshop
1
3 2
10/1/2004
9.0 New Features
13
ANSYS v9.0
Motor Analysis in the Workbench Environment
Now click on the Project tab and choose “New Simulation” 1
Workshop
3: Click “Apply”
1
10/1/2004
9.0 New Features
9
ANSYS v9.0
Motor Analysis in the Workbench Environment
A winding table text file containing information describing the rotor coils (winding.txt) is in the local working directory. Read the table as shown at right. Click the cell to the right of “winding Table File” in the winding details pane and click on “…” to browse for the file.
Workshop
2
10/1/2004
9.0 New Features
15
ANSYS v9.0
Motor Analysis in the Workbench Environment
Prepare to define magnetic flux parallel boundaries on the exterior of the modeled domain as shown at right.
1
2
10/1/2004
9.0 New Features
2
ANSYS v9.0
Motor Analysis in the Workbench Environment
Workshop
You should see an end view of the motor geometry. Using the left mouse button (LMB) click on the blue dot adjacent to the triad in the lower right corner of the plot. This should result in the isometric view shown at right.
9.0 New Features
Work Bench Environment
Low Frequency Electromagnetic Analysis of Motors
ANSYS v9.0
Motor Analysis in the Workbench Environment
Workshop
Upon entering the workbench environment, read in the design modeler geometry stored in motor2_base.agdb.
Workshop
2
3
1
10/1/2004
9.0 New Features
10
ANSYS v9.0
Motor Analysis in the Workbench Environment
Once the file is read in, make the following additional changes in the winding details pane: • • FD2: Slot Angle => 22.5 Clash Detection? => Yes
1
2
10/1/2004
9.0 New Features
4
ANSYS v9.0
Motor Analysis in the Workbench Environment
Click on the individual entries in the right hand column of the details pane and edit them as shown below.

The image can be dynamically rotated as follows: 1) Position the mouse cursor on the display 2) Hold down the middle mouse button (MMB) 3) Move the mouse cursor