Inductance modelisation: matrix has zero on diagonal

Hi,

I am trying to determine the resonance frequency of a racetrack inductor. I followed the 3d inductor tutorial from the AC/DC library. The stationary study works fine, obtained an inductance of 2.23nH, closed to what I expected. On the other hand, the frequency study does not work:

Failed to find a solution for the initial parameter.
Matrix has zero on diagonal.
Returned solution is not converged.

I checked all steps described in the 3d inductor tutorial, and I have not seen any differences, except for a couple of adjustments required due to difference model.


Thank you,
Vincent Lafage