System and method for controlling a wind turbine during loss of grid power and changing wind conditions

摘要

An apparatus and method for controlling a wind turbine (100) having a plurality of blades (108) such that the blade angle (θ )of each blade is continuously adjusted during loss of grid power relative to a wind direction relative to an orientation of the nacelle (112) (i.e., yaw offset) and a rotor azimuth while keeping the orientation of the nacelle of the wind turbine substantially constant. The wind turbine is capable of pitching the blades a full 360 degrees and generating power from the rotation of the rotor shaft (116) during loss of grid power.