Initial conditions solve fail to converge in a trivial model

Hi

I am trying to build a model of a simple microgrid using SimPowerSystems elements. The microgrid contains two synchronous generators in parallel connected to a substation which feed a synchronous motor. I see this error every time I run the simulation: "Initial conditions solve fail to converge" and a detailed report of the equations of various elements which may have caused the problem (and I don't know how these errors could be solved)

Then I simplified the model, incrementally building it, and I saw this error at the very beginning. (File is attached) This model has a Sync generator, a step-up transformer and two three phase loads, delta: RC & Y: R.

Anyone has encountered the same problem, or have an idea? P.S: I reduced the consistency tolerance to 5e-6 (as suggested in Simulin help), but the problem didn't resolve.

[Sergey Kasyanov]

You should check parameters of the transformer and the generator. Read help for the each model.

Answer 1

[kia Na]

For those who encounter the same problem, Synchronous generator output is modeled as a current source. Thus, connecting a transformer is not allowed as it has a leakage inductance. I connected a high-impedance load in parallel to the transformer and the problem was solved. However, I used the elements in the following library for convenience: SimPowerSystem/Fundamental Blocks