An innovative Inductive Air-Gap Monitoring System for Large Low Speed Hydro-Generators

Large low speed hydro-generators (Fig. 1) have a very small specific air-gap to stator bore diameter ratio making it virtually impossible to have a perfect centering of the rotor within the stator during the assembly process. Therefore the machines are operated with an eccentricity that, though small, is not negligible, and is the cause of undesirable effects: considerable unbalanced magnetic pulls, vibrations, additional losses. It is therefore important to assess the eccentricity and even more to check its trend in case of any stator or rotor deformations in order to guarantee a safe operation and to prevent any serious damage at an early stage.


Published in:
Icem: 2008 International Conference On Electrical Machines, Vols 1- 4, 468-472
Presented at:
ICEM'08XVIII 18th International Conference on Electrical Machines , Vilamoura, Algarve, Portugal, September 6-9, 2008
Year:
2008
ISBN:
978-1-4244-1735-3
Keywords:
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2008-11-07, last modified 2018-03-17

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