Determination of the Magnetic Field in the End Zone of Turbine Generators

The magnetic field in the end zone of turbine generators is determined analytically in cylindrical co-ordinates. All boundaries are taken into consideration and it is assumed that the field is normal on all of them. The air gap is replaced by a retuin current closing stator and rotor end winding coils. The flux density is determined by superposition of one part due to current sheets existing between the two planes z=0 and z=h and a second because of the cylindrical boundaries.