Preparing a Maxwell 2D or 3D Transient model for a link to Twin Builder

The following steps outline the process for preparing and using a Maxwell 2D or 3D Transient component in a Twin Builder Transient simulation.

1. Open a Maxwell project or create a new project using the Maxwell Desktop.
2. Right-click the design name in the Project Manager pane and select Solution Type. The Solution Type dialog box appears.
3. Select the Transient radio button in the Magnetic section and click OK.
4. Right-click the design name in the Project Manager pane and select Design Settings.
   1. If necessary, select the Symmetry Multiplier tab and type the appropriate symmetry value.
   2. Select the Advanced Product Coupling tab and select the Enable transient link with Twin Builder check box.
   3. If a 2D design is involved, select the Model Depth tab and enter a value, and the appropriate units, to represent the length of the device.
   4. Click OK to accept the changes and close the dialog box.
5. Transient-Transient coupling requires a motion setup in Maxwell as follows:

1. Right-click Model in the Project Manager pane and select Motion Setup/Assign Band....
2. Choose the Type tab within the Motion Setup dialog box and set the desired Motion Type and the corresponding Moving Vector.
3. Click OK.
   Note:

   You do not need to define an initial position since the initial condition is established by the Twin Builder simulator.

6. Define the appropriate boundary conditions on the Maxwell2D/Boundaries menu.
7. Define the model excitation on the Maxwell2D/Excitations menu. The Maxwell model must have at least one external winding as follows:

1. When assigning the coil excitation, enter the coil Name, the Number of Conductors, and the appropriate Polarity and click OK. This step must be performed for each coil definition.
2. When assigning a Winding configuration for a selected Coil Excitation, the Winding Type should be External as either Solid or Stranded. Define the number of parallel branches and click OK.
   Note:

   You do not need to define an initial current since the initial condition will be established by Twin Builder simulator.

8. Add a solution setup under Analysis.
   Note:

   The Maxwell simulation end time (Tend) must be greater than or equal to that of Twin Builder. All the other options within the solve setup are optional as far the Twin Builder coupling task is concerned.

9. Save the Maxwell Project. If you exit the Maxwell simulator, Twin Builder will launch it again in a non-graphical “Extractor” mode to establish the link. If you leave Maxwell open, the link is established with the open Maxwell Desktop and you will be able to monitor the solution process in Maxwell as well as any messages that displays during the simulation process.

For more information regarding motion setup, boundaries, excitations, or solution setup in Maxwell, consult the Maxwell documentation.