Title :
Numerical simulations of rotor dynamic eccentricity effects on synchronous machine vibrations for full run up
Author :
Pellerey, Pierre ; Lanfranchi, Vincent ; Friedrich, Guy
Author_Institution :
RENAULT SAS, Rueil Malmaison, France
Abstract :
Eccentricity is considered as a major problem for every people dealing with the realization of an electrical machine. Generally linked to manufacturing tolerances and rotor balance quality, rotor dynamic eccentricities contribution to vibro acoustic behaviour of the machine is here investigated for a synchronous machine during a full run up. We will establish, thanks to finite element models coupling, that additional harmonics linked to eccentricities lead to new acoustic noise components. Finally a direct link between eccentricity and vibratory level will be achieved.
Keywords :
acoustic noise; finite element analysis; rotors; synchronous machines; vibrations; acoustic noise components; eccentricity level; electrical machine; finite element models; full run up; manufacturing tolerances; numerical simulations; rotor balance quality; rotor dynamic eccentricities contribution; rotor dynamic eccentricity effects; synchronous machine; synchronous machine vibrations; vibratory level; vibroacoustic behaviour; Acoustics; Dynamics; Harmonic analysis; Rotors; Spectrogram; Stators; Vibrations; Acoustic noise; dynamic rotor eccentricity; electrical machines; finite element methods; structural dynamics analysis; vibrations;
Conference_Titel :
Electrical Machines (ICEM), 2012 XXth International Conference on
Conference_Location :
Marseille
Print_ISBN :
978-1-4673-0143-5
Electronic_ISBN :
978-1-4673-0141-1
DOI :
10.1109/ICElMach.2012.6350316