公开(公告)号：US20240114604A1

公开(公告)日：2024-04-04

申请号：US18373672

申请日：2023-09-27

Applicant: AMI INTERNATIONAL SAPI de C.V.

Inventor： Juan Bernardo Sainz Barajas ,  Rommel Daed Villarreal Villarreal

IPC: H05B7/144 ,  F27B3/28 ,  H02M5/04

CPC classification number: H05B7/144 ,  F27B3/28 ,  H02M5/04 ,  F27B3/085

Abstract: A power supply is provided for an electric arc furnace in which heat is generated by passage of current through one or more electrodes that causes an electric arc between the one or more electrodes and a metal in the electric arc furnace. The power supply is coupleable to and between the electric arc furnace and a utility configured to provide three-phase alternating current (AC) power. The power supply includes power circuitry with a cycloconverter (CCV) for each electrode of the one or more electrodes. The CCV is configured to receive three-phase power voltage and produce a single-phase voltage with reduced frequency that is delivered to the electrode to cause the electrode to create the electric arc that produces the heat to melt the metal. Control circuitry is operably coupled to the CCV, and configured to control a frequency of the single-phase voltage.