Inquiry Regarding Edge Saturation in 3D Axial Flux Motor Example

Amina

Dear Support Team,

I recently reviewed the 3D “Axial flux motor” example provided in the Altair Flux v.2025 to familiarize myself with the steps of 3D simulation. As a follow-up exercise, I created a custom 3D axial flux model with a different number of slots, poles, and winding configuration. The output waveforms aligned well with my expectations.

However, I noticed some ambiguities in the flux density map. Specifically, my model exhibits significant magnetic flux saturation at the edges of the stator teeth. To investigate further, I revisited the example model provided in the Altair Flux and observed that the same saturation appears there as well, as shown in the attached images.

My question is:

Is this edge saturation a result of a design flaw or the use of suboptimal materials, requiring a revision of the model? Or is this kind of localized saturation typical and not something to be concerned about? I would appreciate any clarification regarding the cause of this saturation at the stator tooth edges.

Thank you in advance for your support.

Best regards,

Lavanya Vadamodala_20519

Hi Amina,

The tip of the stator tooth is experiencing concentration of magnetic flux due to sharp corner. This can be mitigated by introducing Fillet on the corner.

It is not a quantity to be concerned about unless the saturated area is large and is showing impact on Torque and core losses.

In the picture, looks like it is concentrated in very small area compared to area of tooth. So nothing to be concerned.

Thank you,

Lavanya