Industrial electric heating furnaces – Arc furnace device – Power supply system
Reexamination Certificate
2007-05-01
2007-05-01
Van, Quang (Department: 3742)
Industrial electric heating furnaces
Arc furnace device
Power supply system
C373S102000, C323S209000
Reexamination Certificate
active
11215996
ABSTRACT:
A method and system for stabilizing energy consumption in multiple loads, or in single multi-phase loads. A central controller monitors variable reactances in the loads and identifies situations of power and/or current fluctuation and/or unbalance. The central controller determines appropriate corrective action by the other loads/phases to compensate for the power and/or current change or unbalance due to the problematic load, and it issues control signals instructing electrode position controllers associated with the other loads to adjust accordingly. The method and system may by applied to electric arc furnace installations. The electrode position controllers may be used in conjunction with variable reactance control systems to take corrective action to address power and/or current changes or unbalances. The variable reactors respond orders of magnitude faster than the electrode positioning system.
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Bereskin & Parr
Browne Sylvan S.
Hatch Ltd.
Van Quang
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