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

1986-06-30

1987-11-24

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 61, 310214, H02K 120, H02K 322

Patent

active

047091770

ABSTRACT:
A ventilation system for end turn conductors spanning a pole face of a rotor of a dynamoelectric machine includes a first plurality of end turn conductors having a first plurality of longitudinally extending ducts having a respective coolant gas inlet disposed proximate the pole center and a respective coolant gas outlet disposed inboard of the end of the rotor body, and a second plurality of end turn conductors alternately stacked with, electrically insulated from and disposed in heat flow communication with the first plurality of end turn conductors. Each of the second plurality of end turn conductors includes a longitudinally extending gas coolant duct, having a coolant gas inlet proximate the winding corner and a coolant gas outlet inboard the end of the rotor body. The system is especially applicable to rotor windings wherein the conductors forming the end turns are not large enough to carry adjacent gas coolant ducts without compromising the structural and mechanical integrity of the winding.

REFERENCES:
patent: 2787721 (1957-04-01), Tudge
patent: 2833944 (1958-05-01), Willyoung
patent: 3005119 (1961-10-01), Schmitt et al.
patent: 3749952 (1973-07-01), Lambrecht et al.
patent: 4543503 (1985-09-01), Kaminski et al.

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