WIND TURBINE SHUTDOWN SYSTEM

摘要

The wind turbine (10) incorporates a wind vane (105) which mechanically controls a valve (100) that directs the output of a turbine driven hydraulic pump (75) to yaw the turbine out of the wind upon a loss of system power or load. The turbine yaws out of the wind at an angular rate that is roughly proportional to rotor speed so that excessive teeter amplitudes are not encountered. The mechanically driven pump advantageously provides power to yaw the rotor out of the wind even if all electrical power is lost.