The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
May. 08, 2020
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventor:
Peter Karl Steimer, Ehrendingen, CH;
Assignee:
ABB Schweiz AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 5/257 (2006.01); H05B 7/144 (2006.01); H02M 5/12 (2006.01); H02M 5/06 (2006.01); H05B 7/148 (2006.01);
U.S. Cl.
CPC ...
H02M 5/12 (2013.01); H02M 5/06 (2013.01); H02M 5/2573 (2013.01); H05B 7/144 (2013.01); H05B 7/148 (2013.01);
Abstract
A power supply system for an electric arc furnace includes an AC input connectable to an electrical grid and an AC output for supplying at least one power electrode of the arc furnace; a resonant circuit interconnected between the AC input and the AC output. The resonant circuit includes a controllable bypass switch for connecting and disconnecting a circuit input and a circuit output of the resonant circuit and a capacitor and a main inductor connected in parallel with the bypass switch.