Ventilated end turns for rotor windings of a dynamoelectric mach

Details Ventilated end turns for rotor windings of a dynamoelectric mach Ventilated end turns for rotor windings of a dynamoelectric mach

1983-12-20

1985-09-24

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 43, 310 60R, 310 61, 310 64, 310270, H02K 900

Patent

active

045435030

ABSTRACT:
A ventilation scheme for rotor windings in a dynamoelectric machine includes passages axially extending through the axial end turn conductors of the windings. Each axially extending conductor is an integral, single bar of metal having a groove thereon which defines the passages in cooperation with the turn insulation interposed between each conductor and the underlying and overlaying conductors. Circumferential end turn conductors are mechanically and electrically attached to the axial end turn conductors by reinforcing plates. Circumferential passages through the circumferential end turn conductors allow gas to flow between an end turn region and an isolated low pressure area. The centrifugal pumping action developed by the rotation of the rotor draws gas from the end turn region through the passages and to the periphery of the rotor body.

REFERENCES:
patent: 2653255 (1953-09-01), Baudry
patent: 2833944 (1958-05-01), Willyoung
patent: 2864014 (1958-12-01), Schmitt
patent: 2986664 (1961-05-01), Willyoung
patent: 3005119 (1961-10-01), Schmitt
patent: 3225231 (1965-12-01), Kudlacik
patent: 4311931 (1982-01-01), Fujioka
patent: 4335324 (1982-06-01), Fujioka

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