Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1981-12-16
1983-09-06
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310185, 310198, H02K 300
Patent
active
044031602
ABSTRACT:
A pole change type motor has armature windings wound around an iron core in a coaxial fashion with a P (for example 2) number of poles for a high speed operation, which armature windings provide a Q (for example 20) number of poles for a low speed operation by changing the external connections of the windings. Each phase coil of the armature windings is segmented into N (for example P, the same number as the poles) portions, a one-pole portion of each phase coil being comprised of a plurality (for example 2) of coils. The plurality of coils include one or more coils of which polarity is changed by changing the external connections of the armature coils and one or more second coils alternately disposed with respect to the first coils, of which the polarity is left unchanged by changing the external connections.
REFERENCES:
patent: 4138619 (1979-02-01), Broadway et al.
patent: 4144470 (1979-03-01), Acingev
patent: 4338534 (1982-07-01), Broadway et al.
The Institution of Electrical Engineers, Paper No. 33064, Dec.'60 pp. 513-528; Speed-Changing Induction Motors, G. H. Rawcliffe et al.
PROC.I.E.E., vol. 110, No. 9, Sep. 1963, pp. 1649-1655; Three-Speed Single-Winding Squirrel-Cage Induction Motors, W. Fong et al.
Duggan Donovan F.
Tokyo Shibaura Denki Kabushiki Kaisha
LandOfFree
Pole change type motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pole change type motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pole change type motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1593736