Electrode positioning control

Details Electrode positioning control Electrode positioning control

1981-03-30

1982-09-14

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Power supply system

H05B 7152

Patent

active

043499120

ABSTRACT:
An electrode positioning control for electric arc furnaces includes a first circuit for producing an electric error signal functionally related in magnitude and sense to the electrical parameters in the electrode. The error signal is used to control the firing angle of an electronic switching device coupled between an electrode positioning motor and its power source. In addition, a signal generator is coupled to the motor for providing a velocity feedback signal functionally related to motor speed and direction for further modulating the firing angle.

REFERENCES:
patent: 4194078 (1980-03-01), Thomas

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