Process for collecting energy, unit of electric and wind production related

A method of collecting energy from a source to power and speed variables such as wind propeller 3, in a processing machine such as an electric generator 4 which it regulates the speed of rotation. An inertial load 7 absorbs excess energy supplied by the source and / or provides an energy supplementation in the machine when the power supplied by the source is insufficient. A primary transmission 14 between the source 3 and the inertial load 7 is controlled in the sense of an optimization of the power received by the source. A secondary transmission 15 between the inertial load 7 and the electric generator 4 is controlled in the sense of a constant rotational speed of the electric generator preferably placed in a fixed position at the base of mât.Utilisation to improve energy efficiency, stabilize frequency power generation, stabilize the rotational speed of the synchronous generator 3, reduce the cost and / or complexity of installing and connecting the turbine to the grid.