Rotor assembly for homopolar generator

Details Rotor assembly for homopolar generator Rotor assembly for homopolar generator

1985-07-02

1989-01-24

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

29598, 310 42, H02K 3102, H02K 128

Patent

active

048003115

ABSTRACT:
A homoplanar generator (HPG) having the stator and an inner brush mechanism housed within the machine support structure utilizes a rotor separated into halves electrically insulated from each other, so as to fit around the stator and brush mechanism. A shaft is mounted in the support structure to carry the rotor. A first rotor half is thermally shrunk-fit onto the shaft, and the second rotor half is hydraulically expansion fit thereon. To hydraulically fit the second rotor on the shaft, a shaft is provided having a downward taper from its midpoint toward one end. The shaft also has a circumferential groove and a port therethrough from the end of the taper, for communicating high pressure oil from an external pump to the shaft-rotor interface. High-pressure seals on each side of the groove prevent leakage. The application of high-pressure oil expands the bore in the rotor half and shrinks the shaft diameter. A hydraulic ram then pushes the rotor half onto the tapered shaft, whereupon the pressure is released and the rotor half bore contracts against the shaft.

REFERENCES:
patent: 1082579 (1913-12-01), Andrews et al.
patent: 2408080 (1946-09-01), Lloyd
patent: 2488729 (1949-11-01), Kooyman
patent: 2557075 (1951-06-01), Caputo
patent: 2914688 (1959-11-01), Matthews
patent: 3383532 (1968-05-01), Zeisler et al.
patent: 3419957 (1969-01-01), Stone
patent: 3469137 (1969-09-01), Huhfa-Koivisto
patent: 4126933 (1978-11-01), Anderson et al.
patent: 4544874 (1985-10-01), Weldon

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