I am trying to simulate a delta source connected to a delta-delta transformer which is connected to a wye load. When I try to simulate multisim comes up with several errors for me (as pictured below). Once I run the convergence assistant it tells me that the issue is unresolved. Any help would be greatly appreciated.
The proper way to do that is to ground the second terminals of the secondary windings of the transformers. The circuit below runs successfully, I just failed to change the turns ratio of the transformers.
For my first reply I thought that you just want to incorporate a three-phase delta to wye transformer in your circuit. That may not be your objective so I recreated your circuit in Multisim Live
Running the simulation generates errors in this screenshot
To circumvent the error(s), I inserted very small resistances in the secondary terminals of the transformers
The simulation proceeded producing the graph below
"Initial conditions" for the inductors are not enabled. Transient simulation has the "Initial conditions" set to Determine automatically". Verify if the graph generated is correct. If there are errors, you can try changing your simulation settings.