Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1988-08-29
1991-12-31
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Primary circuit control
318729, 318775, H02P 540
Patent
active
050775120
ABSTRACT:
An energy efficient electric motor is provided with a supplementary run winding arrangement which operates in conjunction with the motor's main run winding to produce a combined magnetic field with sufficient strength to operate the motor under full load. Less than full load operation obtains increased efficiency through a reduction of power flow to the supplementary run winding arrangement, which brings about a significant reduction in stator core structure (eddy current) losses and winding (resistance) losses. A controller may predetermine the normal amount of magnetic field strength necessary during each portion of the motor's usual operating cycle and variously modulate the instant level of power coupled with the supplementary run winding arrangment.
REFERENCES:
patent: 3016482 (1962-01-01), Andersen et al.
patent: 3389315 (1968-06-01), Andreas et al.
patent: 4242625 (1980-12-01), Hedges
patent: 4263540 (1981-04-01), Brandt et al.
patent: 4361793 (1982-11-01), Nordell
patent: 4382217 (1983-05-01), Horner et al.
patent: 4426611 (1984-01-01), Espelage et al.
patent: 4434394 (1984-02-01), Kellogg et al.
patent: 4453118 (1984-06-01), Phillips et al.
patent: 4806838 (1989-02-01), Weber
Savvy Frontiers Patent Trust
Smith Jr. David
LandOfFree
Energy conserving electric motor control method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Energy conserving electric motor control method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy conserving electric motor control method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1512633