Gas cooled end turns for dynamoelectric machine rotor

Details Gas cooled end turns for dynamoelectric machine rotor Gas cooled end turns for dynamoelectric machine rotor

1994-12-19

1997-07-01

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310270, H02K 900

Patent

active

056441797

ABSTRACT:
Cooling of the rotor endwindings in a dynamoelectric machine is improved by providing radially-extending ducts in the spacers located between the concentric end turns of the rotor winding. The ducts have an inlet located near the radially inward end of the spacer and an outlet located near the radially outward end of the spacer. The inlet can be formed on either an axially-oriented surface of the spacer or a circumferentially-oriented surface of the spacer. The ducts direct cooling air into the cavities between the end turns in such a manner that the circulation velocity in the cavities is increased. This results in increased heat removal capability.

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