H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 11/00 (2006.01)
Patent
CA 2759153
The invention relates to an electrical machine (10) in the power range of several MVA, especially an asynchronous or synchronous machine, which electrical machine (10) comprises a rotor (19) rotating about an axis (18) and having a rotor lamination stack (12), which is concentrically surrounded by a stator lamination stack (14) of a stator and separated from said stator by means of a ring-like air gap (21). To secure a faultless operation of the machine there are provided means (23) for monitoring the air gap (21), said monitoring means (23) reaching through said air gap (21) in an axial direction, and being used for detecting a change of the rotor geometry and/or the presence of debris in the air gap (21).
L'invention concerne une machine électrique (10) d'une puissance se situant dans une plage de plusieurs MVA, en particulier une machine asynchrone ou synchrone, ladite machine électrique (10) étant équipée d'un rotor (19) qui tourne autour d'un axe (18) et comprend un corps de tôle rotorique (12) entouré de manière concentrique par le corps de tôle statorique (14) d'un stator et séparé de ce dernier par un entrefer annulaire (21). Pour assurer un fonctionnement parfait, des moyens (23) de surveillance d'entrefer (21), qui s'étendent à travers ce dernier dans la direction axiale, détectent une modification de la géométrie du rotor et/ou la présence de corps étrangers dans l'entrefer (21).
Cifyildiz Serdar
Schmid Matthias
Schwery Alexander
Alstom Hydro France
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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