SYSTEM FOR CONTROLLING WIND TURBINE POWER, CONSISTING IN VARYING THE COEFFICIENT AND SIZE OF THE SWEPT AREAS

摘要

The invention relates to a system for controlling the power of wind turbines, comprising the active dynamic modification of the power coefficient and the size of the swept areas. According to the invention, at low wind speeds, the turbine operates with the maximum swept areas and with high power coefficients. At high wind speeds, the swept areas (A) are reduced by means of relative movements between the blade segments (S) that form dynamic pairs (D). In addition, the angle of attack of the segments and blades can be controlled. The purpose of the system is to increase the annual electric power production of wind turbines.