Patent Number: 8,580,089

Title: System for the superposition of alternating current in electrolysis processes

Abstract: A system is submitted here that permits superimposing an alternating current in the process of electrolytic refining of metals based on the use of power semiconductors without requiring an external source and which minimizes the utilization of passive elements, achieving a high efficiency solution applicable to high power industrial processes. The invention consists of the division of the cells involved in the metals electrolysis process in two groups of cells (3a) and 3b, both comprising a similar number of anode-cathode pairings, and with both groups linked by a common point for electrical connection (6), and interconnected by means of a bidirectional power converter (7). Said power converter (7) is connected to the common point for electrical connection 6 of the groups of cells (3a, 3b) and to the other two connection points of each group of cells, so that its operation permits transferring power from one group to the other. This, the adequate operation of the bidirectional power converter permits superimposing an alternating current of variable frequency and breadth between the groups of cells, of an average value of zero, taking advantage of the storage (charge) and power supply (discharge) characteristics of the cells utilized in the electrolytic processing of metals.

Inventors: Lagos Lehuede; Patricio Clemente (Santiago, CL), Feuntes Fuentealba; Ricardo Armando (Santiago, CL), Estrada Gonzalez; Jorge Luis (Santiago, CL)

Assignee: Ingenieria Y Desarrollo Technologico S.A.

International Classification: C25C 1/12 (20060101); C25C 1/00 (20060101); C25C 7/06 (20060101)

Expiration Date: 2022-11-12 0:00:00