Method for moments and pitch control as function of rotational speed in a Wind turbine

摘要

The blades are controlled by changing their momentum when operated in a partial load mode and by changing their pitch under full load. For obtaining an optimal effect the unit is operated using a predetermined characteristic curve family. In a first section a torque control under partial load is performed up to a first predetermined speed of rotation and in a second section from the first to a second. Under full load the pitch is changed in relation to the speed level in a third and fourth section. In a fifth section the momentum is changed according to changes in the fourth section.