ARC FURNACE POWER SUPPLY WITH CONVERTER CIRCUIT Russian patent published in 2023 - IPC H02M5/257 H05B7/144 

FIELD: electrical engineering.

SUBSTANCE: invention is related in particular to a power supply system for an electric arc furnace, a method for controlling the power supply system, as well as an arc furnace with such a power supply system. The power supply system (12) for the electric arc furnace (10) contains an AC input (20) connected to the electrical network (22) and an AC output (24) for powering at least one current electrode (14) of the arc furnace (10) . The power supply system (12) further comprises a converter circuit (46a, 46b, 46c) connected between the AC input (20) and the AC output (24). The circuit (46a, 46b, 46c) of the converter contains at least one element (64) of the converter with a capacitor (108) and semiconductor switches (104) for series connection of the capacitor between the input (56) of the circuit and the output (58) of the circuit in the circuit (46a, 46b, 46c) of the transducer.

EFFECT: increase of efficiency of the arc furnace.

15 cl, 9 dwg