Title:
ROTATING ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2011/135061
Kind Code:
A3
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.
Inventors:
SMADJA CHARLES (FR)
Application Number:
PCT/EP2011/056811
Publication Date:
June 28, 2012
Filing Date:
April 29, 2011
Export Citation:
Assignee:
ALSTOM HYDRO FRANCE (FR)
SMADJA CHARLES (FR)
SMADJA CHARLES (FR)
International Classes:
H02K1/20
Foreign References:
| DE3504782A1 | 1986-08-14 |
Other References:
CHAKRABARTI, NATH, CHANDA: "Basic electrical engineering", 2009, TATA MCGRAW-HILL, New Delhi, ISBN: 978-0-07-066930-7, pages: 661 - 662, XP002639652
Attorney, Agent or Firm:
DIMPER, Dieter et al. (CHTI Intellectual PropertyBrown Boveri Str. 7/664/2, Baden, CH)
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