I have tried to build a 3 phase transformer in PLECS magnetic domin. The trasformer model works so far well, and I would like to look the magnetic character more in detail.
The flux rate of 3 legs in magnetic domain are symmetrical, but after the integral, the flux are no longer symmetrical. (It contains a DC portion because of the constant C I think, as shown in the attachment). Since then, the flux density we got for 3 legs is quite different and it also depends on the specified phase of the voltage source. If the saturation or hysteresic effect of the core material is also considered, it makes a huge difference for the flux density and magnetic loss for 3 legs (as shown in the attachment).
My question is, how can I get this DC portion in flux and then in flux density eliminated?
Thanks in advance!