Learning Forum

[Lee seyeon]

 

Hi, I simulate coils to study, but it has errors

 

Excitation 'Current7' : Active design doesn't support phase in excitation.

Then when I add another coil, another error occur

error in calculating the conduction paths. The most likely reason is that the mesh of the source conductor is wrong.

why these errors occur? and how can I solve it?

[GLUO]

Hi,

Are you using 2023R1 version? It seems the solver is not happy with the geomtry/mesh. Please try in 2024R1, the newest version of Maxwell, has some improvement on mesh method for Parasolid kernel geometries introduced in 2023R1 version.

GL

[Lee seyeon]

Thank you for your response.

I use student electronic free software, so I can't use 2024R1. Can I solve it in 2023R2?

 

thank you.

[GLUO]

I would recommend go to model to purge the history for all objects, then export them as STEP file, and re-import them to reformat the geometry. But before doing this, please double check if the issure is from other aspect, you can follow these steps:

1. Verify the conduction path and ensure that the excitation terminal perfectly covers the conductor cross-section. This is especially important if the conductor has a complex geometry that is challenging to mesh [1]. URL: [1] /forum/forums/topic/maxwell-eddy-current-solver-simulations-execution-error-current-leaks-in-air/

2. If the issue persists, you can force a recalculation of the conduction paths. This can be done by using the Maxwell>Excitations>Conduction Paths>Recalculate Conduction Paths command. This command recalculates every time, even if there are no changes that influence the conduction paths [2]. URL: [2] https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/Electronics/v232/en/home.htm%23../Subsystems/Maxwell/Content/RecalculatingConductionPaths.htm?TocPath=Maxwell%257CMaxwell%2520Help%257CAssigning%2520Boundaries%2520and%2520Excitations%2520for%25203D%2520Designs%257CShowing%2520and%2520Verifying%2520Conduction%2520Paths%257C_____1

3. If the error is due to a low material conduction, you can manually adjust the material threshold to a suitable value that considers the conductivity of the material [3]. URL: [3] /forum/forums/topic/fatal-error-in-a-dc-conduction-model-when-material-conduction-is-too-low/

4. In some cases, configuring the winding type as stranded can resolve the issue [4]. URL: [4] /forum/forums/topic/how-to-do-the-winding-excitation-for-maxwell3d-transient-design/