Constant power control of a D.C. electric motor for handling car

Details Constant power control of a D.C. electric motor for handling car Constant power control of a D.C. electric motor for handling car

1974-08-23

1976-06-22

Rubinson, Gene Z.

Electricity: motive power systems

Generator-fed motor systems having generator control

Automatic generator control and/or with time-delay means

318154, H02P 716

Patent

active

039654036

ABSTRACT:
A crane motor control is disclosed which includes a variable D.C. voltage supply in a Ward-Leonard set which is controlled by a load torque signal obtained by sensing the armature current of a motor, magnetic flux in the motor field winding and the rate of change of motor speed. The torque signal controls the variable D.C. voltage supply to keep the motor armature current or the motor field current at a preset constant value upon completion of motor acceleration.

REFERENCES:
patent: 3448357 (1969-06-01), Dolphin
patent: 3735226 (1973-05-01), Pittner
patent: 3867678 (1975-02-01), Stoner

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