Electricity: motive power systems – Self-synchronous type of motor – Having commutating switch-type transmitter
Patent
1977-03-08
1983-04-05
Duggan, Donovan F.
Electricity: motive power systems
Self-synchronous type of motor
Having commutating switch-type transmitter
310 49, H02K 3700
Patent
active
043792570
ABSTRACT:
A single phase or multiphase dynamo electric machine including a stator having at least one winding arranged to be energized to provide an alternating flux, and a further member, e.g. a rotor, movable with respect to the stator and having at least one short circuited winding, providing at each position of the movable member alternative paths of low and high reluctance to the passage of alternating magnetic flux, to cause the movable member to adopt a position in which linkage of the short circuited winding(s) with the stator winding(s) is minimized. The machine operates as a rotary solenoid or where the stator windings are in quadrature, as a double acting solenoid. The stator windings may be short circuited to increase the self aligning torque or where three stator windings are provided, by energization of one stator winding and by connecting the non-energized stator windings in opposition, again the self aligning torque can be increased. A linear version of the machine acts as a single acting or double acting linear solenoid.
REFERENCES:
patent: 1653946 (1927-12-01), Clausen
patent: 1863948 (1932-06-01), Spath
patent: 2279402 (1942-04-01), Japolsky
patent: 2454519 (1948-11-01), McNaney
patent: 3535604 (1970-10-01), Madsen et al.
patent: 3539847 (1970-11-01), Gifford
Duggan Donovan F.
Yeager Robert D.
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