Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2008-03-25
2008-03-25
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S605000, C029S825000, C310S213000
Reexamination Certificate
active
07346974
ABSTRACT:
A method for producing a conductor bar including transposed stranded conductors for a large, rotating electric machine. The method includes a first step of cabling a plurality of electrically insulated individual wires to form a plurality of identical stranded conductors having an essentially circular cross section. In a second step the stranded conductors are helically wound around a winding spindle in the manner of a Roebel transposition so as to form a conductor loop, wherein the winding has a profile adapted to a final cross sectional shape of the conductor bar. In a third step, the winding spindle removed from the conductor loop. In a fourth step, the conductor loop undergoes a press-forming procedure that gives it the final cross sectional shape, especially, for example, a rectangular shape.
REFERENCES:
patent: 587764 (1897-08-01), Short
patent: 1144252 (1915-06-01), Roebel
patent: 2436188 (1948-02-01), Bilodeau
patent: 2821641 (1958-01-01), Ringland
patent: 3154112 (1964-10-01), St. Jacques
patent: 3283280 (1966-11-01), Fischer
patent: 3647932 (1972-03-01), Heller et al.
patent: 3925745 (1975-12-01), Blewitt
patent: 4128779 (1978-12-01), Salon
patent: 4260924 (1981-04-01), Lugosi et al.
patent: 4337567 (1982-07-01), Lugosi et al.
patent: 4439256 (1984-03-01), Meserve
patent: 4650924 (1987-03-01), Kauffman et al.
patent: 2002/0050395 (2002-05-01), Kusumoto et al.
patent: 2002/0079783 (2002-06-01), Hopeck
patent: 118021 (1929-07-01), None
patent: 532 860 (1973-01-01), None
patent: 32 41 506 (1984-05-01), None
patent: G 83 21 135 (1985-01-01), None
patent: 0 120 154 (1984-08-01), None
patent: 62-100144 (1987-05-01), None
J. Gruenenwald et al.: “Rotor Water Cooling in Trubogenerators Leads the Way to a New Design Concept”, cigré, International Conference on Large High Voltage Electric Systems, 1980 Session—Aug. 27-Sep. 4.
M. Watanabe et al.: “Experimental Study of a Practical Airgap Winding Stator Arrangement for Large Turbine Generators”, IEEE Transactions on Power Apparatus and Systems, vol. PAS-100, No. 4, Apr. 1981.
German Search Report for DE 10 2004 005 033.3 with brief translation.
Alstom Technology Ltd
Arbes Carl J.
Darby & Darby
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