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E. Schmidt:
"Eddy Current Losses in the Stator Clamping System of Hydro Generators";
Bericht für Projekte an den zentralen Applikationsservern des Zentralen Informatikdienstes der TU Wien; 2004.

The magnetic field in the end region of synchronous generators causes eddy
currents in the conductive parts of the stator clamping system. With large
hydro generators, the specific losses in these regions can reach high
values and can cause local thermal problems. For this reason, an accurate
calculation of these eddy current losses is a matter of interest with all
design phases of large hydro generators.
A fully 3D approach will be presented for the computation of eddy current
losses in the stator clamping parts of a 450 MVA hydro generator. Both
time-harmonic and nonlinear transient finite element analyses are carried
out. With the indent of an inclusion with design review and design
optimization, the results obtained from both analysis methods are compared
regarding local and total eddy current losses.