The PowerTransformer is a two port. The left port voltage v1, left port current i1, right port voltage v2 and right port current i2 are connected by the following relations:
v1 = R1 *i1 + jωL_1s *i1 + R_Fe*jωL_h/(R_Fe + jωL_h)*(i1 + i2')
v2' = R2'*i2' + jωL_2s'*i2' + R_Fe*jωL_h/(R_Fe + jωL_h)*(i1 + i2')
V2' = w1_w2*v2; i2'=i2/w1_w2; L_2s'=(w1_w2)^2*L_2s; R2'=(w1_w2)^2*R2