2026-04-14T03:12:37Zhttps://recercat.cat/oai/requestoai:recercat.cat:2117/1143892025-07-22T22:52:01Zcom_2072_1033col_2072_452951
RECERCAT
author
Cabré Gimeno, Marc
2017
Air-cooling is the most common way of cooling large generators like those used in
hydropower. However, because these machines are quite complex and therefore, understanding
the cooling of these machines is not easy. The details of the air flow
inside of the generator is still a field in which the academics are doing research and
developing more detailed and accurate CFD studies. The downside of these CFD
studies is that they often involve the use of more computational resources and time.
This lack of versatility of CFD studies makes its use impossible for daily small design
tests. In this area, the lumped parameter thermal models are the tools used to get
fast and good enough results that allow designers to test little modifications.
The present work consist of the development of a versatile lumped parameter model,
implemented in Matlab/Simulink, to study the cooling of hydro-generators from a
thermal and fluid perspective, contributing to future ventilation studies and research.
The model created is based on a 3D network modelling of a Voith Hydro
real generator, using lumped element strategy and is able to run transient simulations
in a very short amount of time. The model is validated with real thermal data
and is finally used to perform a parametric study of the outlets of the stator cooling
ducts of the modelled generator.
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain
Àrees temàtiques de la UPC::Energies
Hidroelectric power plants
Cooling systems
Centrals hidroelèctriques
Refrigeració, Sistemes de
Network modelling of cooling of hydro-generators
Master thesis