Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-10-06
2000-02-08
Budd, Mark O.
Electrical generator or motor structure
Dynamoelectric
Rotary
H01L 4108
Patent
active
060231165
ABSTRACT:
An apparatus for electromagnetically and rotationally vibrating a rotary body that is supported by bearings. The apparatus comprises a ring-shaped magnet bipolarly magnetized and mounted coaxially on a shaft of the rotary body, a ring-shaped stator having a coil and adapted to generate a rotating magnetic field by controlling an electric current supplied to the coil, and a frequency variable vibration power source adapted to supply alternating electric power to the coil in the stator. The distance between a location of a magnetic pole in the stator and an axis of the shaft is different than the distance between a location of a magnetic pole in the magnet and the axis of the shaft. The magnet and the stator are disposed so as to be adjacent to each other. Thus a rotational exciting force is applied to the rotary body by an interaction of the rotating magnet field generated by the stator with the magnet. This electromagnetic rotary vibrator can be applied to a damper for offsetting the unbalanced vibration of a rotary body.
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Gunji Kiyoshi
Kikuchi Kiyotaka
Budd Mark O.
Japan Nuclear Cycle Development Institute
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