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1. (WO2011135061) ROTATING ELECTRIC MACHINE

Pub. No.:    WO/2011/135061    International Application No.:    PCT/EP2011/056811
Publication Date: Nov 3, 2011 International Filing Date: Apr 29, 2011
IPC: H02K 1/20
Applicants: ALSTOM HYDRO FRANCE
SMADJA, Charles
Inventors: SMADJA, Charles
Title: ROTATING ELECTRIC MACHINE
Abstract:
A rotating electric machine (10) comprises a rotor rotating around an axis and a stator (11) concentrically surrounding the rotor, whereby stator (11) is built up from a plurality of packages (P1, P2) of laminations and comprises a plurality of axial slots (12) distributed along the inner circumference of the stator (11) for receiving a stator winding, and whereby cooling means (13, 14) are provided within the stator (11) for removing heat from the stator (11) by a flow of cooling air flowing through said stator (11). The cooling efficiency and stator design are improved by providing radial and axial channels (13, 14) for the cooling air at the slots (12) by combining packages (P1, P2) of laminations (15, 16) with different shapes (S1, S2) of the slot cut-outs.