Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-02-14
1996-01-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 91, 310214, H02K 346
Patent
active
054850509
ABSTRACT:
The winding overhang support of a turbo-generator comprises an inner ring (12) which fits closely, either directly or with the insertion of an interlayer (14), against the ends of the turns of the stator winding (4, 5), which ends widen like an internal taper, and a multipart external support comprising rings (9, 27) and supporting brackets (7). The supporting brackets (7) are attached to the end of the stator core end plate (3) of the laminated core. The first outer ring (9), which is composed of insulating material, fits closely against the outside of the free ends of the supporting brackets (7). The second outer ring (27) is manufactured from high-strength nonmagnetic steel and is supported on a shoulder (26) on the stator core end plate (3) and is attached to the supporting brackets (7). There are double-wedge clamps (16, 17, 20) between the inward-facing surfaces (18, 19) of the supporting brackets (7) and the ends of the turns.
Due to the support of the second outer ring (27) on the shoulder (26) of the stator core end plate (3), it can only expand in itself but cannot deform into an oval shape. This makes the winding overhang support very rigid radially and meets all requirements of practical service, especially in the case of a short circuit.
REFERENCES:
patent: Re28478 (1975-07-01), Bahn
patent: 3293472 (1966-12-01), Stevens
patent: 3344296 (1967-09-01), Coggeshall
patent: 3991334 (1976-11-01), Cooper
patent: 4318021 (1982-03-01), Johansson
patent: 4563607 (1986-01-01), Cooper
patent: 5140740 (1992-08-01), Weigelt
patent: 5355046 (1994-10-01), Weigelt
patent: 5373211 (1994-12-01), Ramirez-Coronel
Firmenschrift BBC, Brown Boveri, Druckvermerk HTGG 104 108 D.
N.N.: Erfolgreiche Nachrustung Eines 970-MVA-Turbogenerators. In: ABB Technik Mar. 1988.
ABB Management AG
Skudy R.
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