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:
Jan. 13, 2015
Filed:
Sep. 08, 2009
Wolfgang Hörger, Hausen, DE;
Wolfgang Meusel, Herzogenaurach, DE;
Wolfgang Hörger, Hausen, DE;
Wolfgang Meusel, Herzogenaurach, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a power supply system for a three-phase arc furnace (), comprising at least one furnace transformer (), the furnace transformer () is connected on the secondary side to the three-phase arc furnace (). On the primary side, the furnace transformer () is connected to a three-phase supply mains () through an indirect converter (). The indirect converter () comprises at least one rectifier () on the mains side, at least one inverter () on the transformer side, and an intermediate circuit () between the rectifier () and the inverter (). Each phase of the three-phase supply mains () is connected to the intermediate circuit () through two converter elements () of the rectifier () in each case. Each primary-side phase of the furnace transformer () is connected to the intermediate circuit () through two converter elements () of the inverter () in each case.