End Component of Armature Leakage Reactance of Turbine Generators

Stator and rotor end windings are considered to be closed systems of currents, as the end coils are assumed to close through the air gap by means of fictitious filaments. The leakage reactance end component then is calculated on the basis of the net flux linking the stator end winding when both stator and rotor are excited with currents in such a way that the net flux density in the air gap is zero. All iron boundaries of the end-zone region are considered to be perfect magnetic receptors which contain no eddy currents.