Means to improve performance of electric motors

Details Means to improve performance of electric motors Means to improve performance of electric motors

1985-10-02

1987-02-10

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310162, H02K 1912

Patent

active

046424946

ABSTRACT:
An electric motor having a rotor and a stator with two sets of stator poles. The poles of one set of stator poles are disposed in positions about the stator which they would normally occupy if all stator poles were disposed symmetrically about the rotor. The poles of the other set are displaced from their normal positions by an angle. The angle is chosen so that a subharmonic of the fundamental torque/angle curve is substantially reduced, thus improving the performance of several types of motors.

REFERENCES:
patent: 3978356 (1976-08-01), Spiesberger
patent: 4031419 (1977-06-01), Spiesberger et al.
Say, M. G., Alternating Current Machines, 5th Ed., Wiley, NY 1983, pp. 190-193.

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