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

三相电源首先经过变压器变压后，然后经过整流后对超级电容充电(The three-phase power source is first pressed by transformer and then recharged to supercapacitor after rectification)