D. C. Motor control system effecting changes in the connections

Details D. C. Motor control system effecting changes in the connections D. C. Motor control system effecting changes in the connections

1974-06-07

1976-02-10

Scott, James R.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Acceleration control

318111, 318278, 318387, 318405, 318493, 318497, H02P 116

Patent

active

039380130

ABSTRACT:
A d.c. motor control system includes a pair of armature windings mounted on a single rotor or on a pair of mechanically coupled rotors, and a field winding or windings. The system includes switch means operable to effect a change in the electrical connections of the armature windings to a pair of electrical supply terminals and means for effecting variations of the current flowing in the field winding or windings.

REFERENCES:
patent: 517105 (1894-03-01), Henderson
patent: 2331228 (1943-10-01), Purifoy
patent: 2521182 (1950-09-01), Georges-Gabriel et al.
patent: 3267345 (1966-08-01), Boening
patent: 3321684 (1967-05-01), Stamm
patent: 3564342 (1971-02-01), Sanders
patent: 3800197 (1974-03-01), Mehta
patent: 3803465 (1974-04-01), Akamatsu

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