Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-09-12
1997-10-14
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 81, 310 82, 310156, H02K 702, H02K 7075
Patent
active
056775830
ABSTRACT:
A electric motor is capable of increased output torque and efficiency in utilizing magnetic energy. The electric motor includes a plurality of electromagnets arranged annularly, each of the electromagnets having a magnetically permeable armature and a winding therearound, and a rotor formed of magnetic material, the rotor being rotatably supported and surrounded by the annularly arranged electromagnets. An output shaft is fixed to the rotor for outputting rotational motion of the rotor. At least one portion of the outer periphery of the rotor is able to approach or contact an energized one of the electromagnets by attracting force thereof. A current control device energizes the electromagnets in a predetermined sequence and timing. At least one electromagnet, among the annularly arranged electromagnets, which is situated at a downstream or forward side of the closest point to the electromagnets on the outer periphery of the rotor relative to the rotational direction thereof, is energized.
REFERENCES:
patent: 4142119 (1979-02-01), Madey
patent: 4433261 (1984-02-01), Nashiki et al.
patent: 4709362 (1987-11-01), Cole
patent: 4728837 (1988-03-01), Bhadra
patent: 5030866 (1991-07-01), Kawai
Nguyen Tran N.
Nihon Riken Co., Ltd.
Stephan Steven L.
LandOfFree
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