Need a help in building IEEE 9 bus including DFIG

Hi eveyone

I want to include a DFIG to an IEEE 9 bus system to examine the stability of the whole system.

I have some questions about it, please:

1-when I add the DFIG to this system I got problems in load flow and so in time-domain simulation (N.B. I use PSAT)

2-where and how can I add this machine to deal with this problem.

Please, do you have any idea about how to solve this issue?

Best regards,