Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1979-07-09
1982-03-30
Duggan, Donovan F.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318775, 310185, 310198, H02K 1708
Patent
active
043226655
ABSTRACT:
A two speed, single phase electric motor having a stator assembly including a main winding and a supplemental winding. Each of these windings includes a pair of coil sets. The main winding coil sets and the supplemental winding coil sets are so connected to a source of electrical power such that during high speed operation of the motor the number of effective turns is the sum of the turns in one main winding coil set and its supplemental winding coil set, and during low speed operation, only the turns in the main winding coil set are energized so that there are fewer effective turns. Thus, by varying the number of turns included in the supplemental winding coil sets while keeping the total number of effective turns in the main winding and supplemental winding constant, the low speed breakdown torque of the motor may be preselected during the design of the motor to be less than, equal to, or greater than a desired high speed breakdown torque.
REFERENCES:
patent: 2671879 (1954-03-01), Schwarz
patent: 2774024 (1956-12-01), Brammerlo
patent: 2774924 (1956-12-01), Witt
patent: 3359476 (1967-12-01), Charlton
patent: 3368131 (1968-02-01), Ross
patent: 3887854 (1975-06-01), Parks
patent: 4066937 (1978-01-01), Pfarrer et al.
patent: 4103213 (1978-07-01), Landgraf
Duggan Donovan F.
Emerson Electric Co.
LandOfFree
Two speed single phase 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 Two speed single phase motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two speed single phase motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-384466