I’m simulating a 3D model on transient solver of a trhee-phase power transformer, split winding, with two LV and one HV winding. The HV is Delta, one LV is Delta and other LV is Y.<\/p>\n
The model works perfect when the excitation is inserted directly on the windings (voltage tipe, the used the cosine funcition). The flux density is exactly the one on the real prototype, so as the excitation currents.<\/p>\n
But, when the same excitation is made using the external circuit, the transformer enters on saturation (almost double the expected density flux), even the voltage on windings being the same, with or without the external circuit.<\/p>\n
So, the model works just fine. But, when utilizyng the external circuit, with the same voltage feeding, everithing goes wrong.<\/p>\n
Has someone already sttrugled with this problem? How may i correct this? For my research, i do need use the external circuit.<\/p>\n
The excitation circuit is show on the figure, with AT = HV; abc the phases; AT1 and AT2 are in parallel (reminding that it’s a split winding transformer).<\/p>\n","protected":false},"template":"","class_list":["post-290434","topic","type-topic","status-closed","hentry","topic-tag-3d-maxwell-simulation","topic-tag-transformer"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t