Industrial electric heating furnaces – Arc furnace device – Power supply system
Patent
1995-10-26
1999-11-23
Hoang, Tu Ba
Industrial electric heating furnaces
Arc furnace device
Power supply system
373 47, 373108, 323109, 364483, H05B 7148
Patent
active
059913274
ABSTRACT:
In an electric arc furnace having a power source for applying at least one AC/DC voltage to at least one electrode, and the electrode being spaced apart from a grounded container for receiving scrap metal, wherein the application of the at least one AC/DC voltage to the at least one electrode causes generation of an arc between the electrode and the container for melting the scrap metal, a predictive line controller comprising a plurality of AC switches intermediate the power source and the electrode, and a central controller for monitoring the at least one AC/DC voltage and generating a signal model thereof, and in response generating and applying a plurality of gating signals to the plurality of AC switches, the gating signals being delayed by respective predetermined amounts based on the model, for causing the plurality of AC switches to gate the at least one AC/DC voltage in accordance with the model so as to minimize flicker in the electric arc furnace.
REFERENCES:
patent: 3936727 (1976-02-01), Kelley, Jr. et al.
patent: 3989999 (1976-11-01), Thompson et al.
patent: 4698581 (1987-10-01), Shimamura et al.
patent: 5155740 (1992-10-01), Ao et al.
patent: 5239554 (1993-08-01), Gensini et al.
patent: 5315527 (1994-05-01), Beckwith
patent: 5438588 (1995-08-01), Wanner
patent: 5463653 (1995-10-01), Du Parc et al.
patent: 5583883 (1996-12-01), Paulsson et al.
W. Staib et al, Neural Network Conversion of the Electric Arc Furnace into the Intelligent Arc Furnace, 1991, pp. 749-756.
CEA R&D Report Summary, Project 042 T 818, Static VAR Compensation of Voltage Flicker from Electric Arc Furnaces, Oct. 1993.
IEEE Transactions on Power Apparatus and Systems, vol. PAS-97, No. 5, Sep./Oct. 1978, pp. 1935-1945, Principles and Applications of Static . . . .
Hoang Tu Ba
Inverpower Controls Ltd.
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