Hello again,
I just think I might have to reformulate my question after not getting any answer. Actually I'm using plecs to implement an AC/DC/AC converter and I use a SPWM for the DC/AC converter with IGBT. After adding some inductance on the grid side I have the bouncing error message. Actually I'm using an equivalent of a DC capacitor model. I dont have the error when removing the DC/AC converter can someone help me? Many thanks