Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1981-03-02
1982-08-31
Truhe, J. V.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, H02K 2402
Patent
active
043474640
ABSTRACT:
A multipole permanent magnet rotor is positioned on a shaft and rotatably mounted in a multiphase stator having two windings per stator phase. A distributor comprising a pattern of conducting and non-conducting material is mounted to turn with the rotor shaft. Pickup "fingers" in contact with the distributor, gate appropriate FET's of the pairs of FET's associated with each stator phase in sequence, with timing dependent on the instantaneous shaft position, to generate a rotating flux field. A voltage across the windings provides the current for flux generation, and can be supplied by a full wave rectified single phase AC source. The speed of rotation of the motor can be controlled by varying the voltage supplied.
REFERENCES:
patent: 3153185 (1964-10-01), Hummel
patent: 3440506 (1969-04-01), Krestel et al.
patent: 3495148 (1970-02-01), Marchal et al.
patent: 3895273 (1975-07-01), Parker
Park John N.
Steigerwald Robert L.
Bergmann S. M.
Davis Jr. James C.
General Electric Company
Snyder Marvin
Steinberg William H.
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