Automatic sequencing scheme for reversing directions of electric

Details Automatic sequencing scheme for reversing directions of electric Automatic sequencing scheme for reversing directions of electric

1975-02-27

1976-06-29

Schaefer, Robert K.

Electricity: motive power systems

Plural diverse motor controls

Motor-reversing

318261, H02P 312

Patent

active

039671755

ABSTRACT:
In an electric propulsion control system for self-propelled traction vehicles having reversible, variable speed tractiOn motors, wherein the operation of a direction selector means overrides the normal speed controlling means and initiates a dynamic retardation operating mode so as automatically to decrease the speed of the traction motors, and means responsive to the motors subsequently decelerating to a predetermined relatively slow speed effects a reversal of motor energization so as to reverse the direction of the vehicle.

REFERENCES:
patent: 3378746 (1968-04-01), Weiser
patent: 3584281 (1971-06-01), Reeves et al.
patent: 3586944 (1971-06-01), Cooper et al.
patent: 3684937 (1972-08-01), Reeves et al.
patent: 3798520 (1974-03-01), Friend et al.

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