Patent ID: 8580089

Claim:
A system for superimposing an alternating current onto the direct current that feeds the electrolytic cells in a process of metals electrolysis comprising: a. two groups of cells, each group formed by at least one bar of anodes, one bar of cathodes and one of several anode-cathode bars wherein the connection between the anode bar or the cathode bar of the first group defines a common connection point between the groups of cells; b. two sources of direct current that supply direct current to said groups of cells, each source with a negative pole connected to the cathode bar of the respective group, and a positive pole, connected to the anode bar of the respective group; and, c. a bidirectional power converter that permits power to be transferred between both groups of cells, with three points for electrical connection, such that the first point of the converter being connected to said common connection point between the groups of cells, the second point of connection of the converter being connected to the available bar between the cathode bar and the anode bar of the first group of cells, and the third point for connection of such converter being connected to the available bar between the cathode bar and the anode bar of the second group of cells, in a manner such that the cyclic and alternating operation of each power transference cycle between the groups of cells generates an alternating current superimposed onto the direct current supplied by the sources of direct current.