¿How is the thyristor shooting sequence for a soft starter with asynchronous generator?

Im simulating a soft starter for an asynchronous generator, but it gives me an 'algebraic loop' when the stator current starts. Im not sure if the issue is in the thyristor shooting sequence because the error appears in the rotor reference frame (yellow block). The thyristor shooting method that I use, is simply starting at the end of the middle sine in alpha angle an it goes decreasing from 180 to 0 degrees. I dont know what can I do. If someone could help me, I will be grateful. Thanks!