Thyristor acting as a diode in a full bridge rectifier with C filer

We were asked to simulate a controlled bridge rectifier with C filter for class.

Whatever I change the firing angle into, the output stays the same (Same Vdc).

I thought that a capacitor filter couldn’t force a thyrsitor to stay on and that was only an inductor. pictures included:

alpha 60:

Imgur

Imgur

alpha 0:

Imgur

Imgur

Hi Ammar,

Thanks for your question!

Can you please send the PSIM schematic to have a look?

Regards,
Amit