The paper presents an in situ parameter estimation method to determine the equivalent circuit parameters of the three-winding transformer (TWT). The suggested method also estimates geometrically a complex parameter that is mutual leakage between

if the following span exists (not past the end, non-zero winding) connect the two edges. -if the following span exists (not past the end, non-zero winding) connect the two edges.

find first angle, initialize winding to computed fWindSum.

find first angle, initialize winding to computed fWindSum.