Minimum length, air cooled ac generator arrangement

Details Minimum length, air cooled ac generator arrangement Minimum length, air cooled ac generator arrangement

1991-09-19

1993-03-02

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310114, 310 68D, H02K 720

Patent

active

051912546

ABSTRACT:
An air-cooled ac generator arrangement is rearranged to take advantage of otherwise wasted space within the generator. The permanent magnet generator is moved to the drive end of the rotor where it is placed under the drive end side winding of the main armature. The permanent magnet generator field now obstructs the passage of air to the drive end bearing so a comparatively small air impeller is added in the otherwise void space between the permanent magnet generator and the main field. Ports are also added to the permanent magnet generator field hub to provide for the required air flow.

REFERENCES:
patent: 4409502 (1983-10-01), McCabria
patent: 4443723 (1984-04-01), Ohkubo
patent: 4670677 (1987-06-01), Snider et al.
patent: 4797590 (1989-01-01), Raad et al.

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