A new approach to calculate end leakage inductance of round machine's rotor damp winding

Abstract

A new approach to calculate end leakage inductance of new type damp copperplate is analyzed in this paper. Based on the basic inductance calculation formulas between two long direct wires, the leakage inductance of end copperplate is obtained by taking the end copperplate as a group of long direct wire. Using the parameter calculatd, the simulation of a sudden short-circuit test of the machine was carried out. The simulation and test results agree quite well, showing that the formulas presented are correct.