Flux corrective control apparatus for motor drives

Details Flux corrective control apparatus for motor drives Flux corrective control apparatus for motor drives

1975-02-03

1977-09-13

Dobeck, B.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318521, 318532, H02P 314

Patent

active

040485501

ABSTRACT:
A direct current motor control apparatus includes corrective circuit for eliminating the influence of non-linearities on speed regulation as a result of load variations. A summer circuit at the input of the speed regulator algebraically combines signals representing respectively the armature current and voltage to derive a signal representing the counter-electromotive force of the motor. The latter signal is compared in the summer circuit with a signal representing motor speed for supplying a corrective error signal to the speed regulator, thereby to keep the air gap flux constant and provide a speed-load characteristic which is linear in relation to the armature current drop.

REFERENCES:
patent: 3569809 (1971-03-01), Comer
patent: 3735220 (1973-05-01), Renner et al.
patent: 3735226 (1973-05-01), Pittner
patent: 3811079 (1974-05-01), Tashiro et al.
patent: 3887855 (1975-06-01), Klimo

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