Patent ID: 7576447

Claim:
A control and supply system for subsea electrical devices comprising: at least one voltage supply and control device above sea level; a subsea cable connecting said voltage supply and control device with the electrical devices; a control and actuating device arranged in situ with the electrical devices; and a connecting line connecting said control and actuating device to the electrical devices; wherein said voltage supply and control device comprises at least one AC/DC converter and is adapted to produce a direct current (DC) voltage that is fed into said subsea cable; and wherein the control and actuating device comprises at least one DC/DC or DC/AC converter for converting the DC voltage transmitted by said subsea cable into a second voltage such that the second voltage can be transmitted to the electrical devices via said connecting line, wherein the control and actuating device transmits data to the voltage supply and control device to regulate power provided by the voltage supply and control device.