Issue with Earth Fault Simulation Using Saturable Inductors – Integration Tolerance Error

Dear experts

I am trying to simulated earth faults, with saturatable inductors a get the following error: Unable to meet integration tolerances without reducing step size below smallest value allowed (3.73012e-18). The model give in model: earth_faults_satur_not_grounded_test.plecs with saturatable inductors.

If a do the same simulation without saturable inductors a get no error, the model is: earth_faults_satur_not_grounded_test.plecs

Could somebody give me a model that can do the simulation without getting a error and explain how the problem is resolft, so that i now how to fiks the problem if a happen to get it in a different simulation.

Kind Regards

Milan

Dear experts

I am trying to simulate earth faults using saturable inductors for my filter, but I encounter the following error:

“Unable to meet integration tolerances without reducing step size below the smallest value allowed (3.73012e‑18).”

This happens in the model earth_faults_satur_not_grounded_test.plecs, which uses saturable inductors.

When I run the same simulation without saturable inductors (model: earth_faults_not_satur_not_grounded_test.plecs), I do not get the error.

Could someone please provide a version of the model that runs without this error and explain how the issue was resolved? I would like to understand the cause so I can fix similar problems in future simulations.

earth_faults_satur_not_grounded_test.plecs (47.3 KB)

earth_faults_not_grounded_test.plecs (47.4 KB)

Kind regards
Milan