Arc furnace control system

Details Arc furnace control system Arc furnace control system

1976-05-27

1977-06-14

Envall, Jr., R. N.

H05B 7148, H05B 7152

Patent

active

040298884

ABSTRACT:
An electric arc furnace control system is provided for positioning the furnace electrodes in accordance with the resistance of the arc. This is accomplished by balancing the arc current signal against a voltage signal multiplied by a signal representing the arc circuit power factor to provide an error signal. An analog command signal is then derived from the error signal to control the direction and speed of the electrode hoist drive motor.

REFERENCES:
patent: 3408447 (1968-10-01), Beck
patent: 3435121 (1969-03-01), Jackson
patent: 3662075 (1972-05-01), Sakai

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