ABSTRACT
The flux density and the eddy current loss in the damper winding end region of a 36 MW tubular hydro-generator are calculated and analyzed. In order to study the eddy current losses in the end region of damper winding thoroughly, a 3D moving electromagnetic field Finite Element model of tubular hydro-generator is built. The chapter provides a more rational calculation model to assess the eddy current loss in the damper winding end region of large hydro-generators, which helps improve the design standard of tubular hydro-generators. Damper winding is one of the key components of hydro-generator and plays an important role in the safety and stability of the generator and power system. Tubular hydro-generators have then been applied widely in hydro-power stations with water head is lower than 20 m. To solve the eddy current loss in the end region of damper winding, the 3D moving electromagnetic field model of the hydro-generator end region is built.
