Thermal management of rotor endwinding coils

Details Thermal management of rotor endwinding coils Thermal management of rotor endwinding coils

2005-03-22

2005-03-22

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S058000, C310S059000

Reexamination Certificate

active

06870299

ABSTRACT:
A machine comprises: a rotor comprising (a) axially extending coils, each coil extending into an endwinding region, (b) a plurality of cavities between the coils in the endwinding region, and (c) a plurality of spacers situated between the coils. Ventilation grooves having an inlet and an outlet are defined in the rotor with at least some of the coils including at least one of the ventilation grooves. The ventilation grooves provide at least one path for gas flow from at least one first cavity to at least one of (i) a second cavity or (ii) a different portion of the first cavity.

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