Pitch control in a wind turbine

摘要

Wind turbine that is provided with a rotor (6) with propeller blades (7) with adjustable angles of incidence provided on the rotor (6) in such a manner that they can rotate round their longitudinal axes, and which are provided with a drive (9) and a primary control (10) to adjust the angles of incidence as a function of a measured parameter, characterized in that it is provided with a secondary control (11) which will make the angles of incidence vary in relation to the primary control (10) according to a predetermined setting.