Dynamoelectric machine stator wedges and method

Details Dynamoelectric machine stator wedges and method Dynamoelectric machine stator wedges and method

1981-09-30

1983-06-07

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

29596, H02K 348

Patent

active

043873162

ABSTRACT:
In a dynamoelectric machine having a rotating field and a stationary stator core, electrical conductors are contained within axially-extending radial slots which are part of the stator core construction. The electrical conductors for stator bars are subject to electromagnetic forces and thermal cycling effects which, over a period of time, tend to cause the stator bars to become loose within their slots. The invention is an improved wedging system which provides both an immediate and residual force on the stator bars which holds the bars in place even after certain settlements have taken place. Further, it is possible to determine the amount of force applied initially to the stator bars by the wedging system and any residual force after a period of operation.

REFERENCES:
patent: 2723358 (1955-11-01), Holmgren
patent: 3139550 (1964-06-01), Geer
patent: 3665576 (1972-05-01), Nordmann et al.
patent: 4015156 (1977-03-01), Johrde
patent: 4149101 (1979-04-01), Lesokhin et al.
patent: 4179635 (1979-12-01), Beermann
patent: 4200818 (1980-04-01), Ruffing et al.

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