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Department of Electric
Power Engineering
Spring 2017
FEM Calculation of
Losses and Heating
of the End-Region of
the Stator in Large
Hydropower Generators
Supervisor:
Arne Nysveen
In cooperation with:
Statkraft and NVKS
Vegard Rosenvinge
Johansen
MASTER THESIS
Background
During the last decades, the need for electrical
power has increased in parallel with the rest
of society. This demand have led to generators
increasing in both size and ratings.
Larger generators are susceptible to an
excessive heating in the end winding of the
stator. This is due to the stray magnetic field
from the rotor.
Objective
Study and research the designs of the
synchronous generators that are currently in
use in the Norwegian hydropower plants.
Conduct a FEM-Analysis of the generator during
different scenarios and study the heat losses in
the steel laminations in the end region of the
stator.
Design an experimental setup and conduct heat
measurements in order to validate the computer
simulations.