Two Winding Inductor

Question: Can I run inductor program so that I have rms current in the winding for winding losses and a much smaller current seen by the core? For example if a 3 phase inductor had two windings on each core leg and they were connected in opposite polarities. I would run the same current through each and have full rms current losses in the winding but no net flux so no core loss. Then be able to adjust or unbalance the winding currents so that the resultant unbalance would give flux. Is this a function for which you know a way to model?

The way that I have created a flux on the core is to use the transformer program and make the currents of the primary and secondary the same, use the same core and enter a voltage that would create the flux desired.