Current Sheets Equivalent to End-Winding Currents of Turbine-Generator Stator and Rotor

The steady-state end-winding current distribution of turbine generators is replaced by appropriate current sheets of the sinusoidal type. By assuming that the end-winding coils of stator and rotor close through the air gap, their respective current distributions are represented by systems of closed currents. Then, the total current distributions for stator and rotor are each separated into four components; peripheral, axial, and radial current sheet, and return current.