Three-Phase Transformer (Two Windings) Unbalanceded curret without voltage

Hi

I am newbie in simulink powerlib. I designed 3 phase balanced system without transformer everything is working good. But when I add a transformer my system system currents are not correct. it always disordered. I send photo link, first and second captured without transformer; third and fourth captured with transformer.

http://web.itu.edu.tr/~agin/trans/VI_disoredeed.png

My System is here: http://web.itu.edu.tr/~agin/trans/system.png

My mdl file is here:

http://web.itu.edu.tr/~agin/trans/differantial.mdl

I need your help. Thanks