NDLI: Free vibration analysis of a large hydroelectric generator and computation of radial electromagnetic exciting forces

Content Provider	IEEE Xplore Digital Library
Author	Dirani, H. C. Cupillard, S. Merkhouf, A. Belanger, S. Tounzi, A. Giroux, A.-M. Al-Haddad, K.
Copyright Year	2015
Description	Author affiliation: École de Technologie Supérieure, Montreal, Canada (Dirani, H. C.; Al-Haddad, K.) \|\| Institut de recherche d'Hydro-Québec, Varennes, Canada (Cupillard, S.; Merkhouf, A.; Belanger, S.; Giroux, A.-M.) \|\| Université Lille 1, Villeneuve d'Ascq, France (Tounzi, A.)
Abstract	Major causes of vibration in electrical machines come from electromagnetic sources. A serious problem may arise when the frequencies of the periodic exciting force are identical with, or close to, one of the natural frequencies of the machine. This paper presents a 2D modal analysis which calculates the natural frequencies and mode shapes of the stator and rotor of a large hydroelectric generator. The structural model takes into account the shape of the stator teeth and rotor poles. Moreover, a 2D electromagnetic transient simulation is performed in order to predict the frequencies and mode shapes of the electromagnetic exciting force. This advanced electromagnetic numerical simulation takes into account the winding sequence and the geometry of the rotor and stator given by the manufacturer. The purpose of this work is to validate a multiphysics tool for the future and recognize its advantages over the classical method.
Starting Page	328
Ending Page	334
File Size	279156
Page Count	7
File Format	PDF
e-ISBN	9781479979417
DOI	10.1109/IEMDC.2015.7409079
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stator windings Finite element analysis Shape Rotors Stator cores Vibrations Computational electromagnetics Electromagnetic forces Finite element (FE) analysis Hydroelectric generator Modal analysis Nonlinear equations Numerical simulation
Content Type	Text
Resource Type	Article

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