Wind turbine with blade pitch control to compensate for wind shear and wind misalignment

摘要

A wind turbine rotor load control. The pitch of the blades is controlled in a conventional mannerby a command component, a rotor blade pitch command signal. A storage contains storedvalues of a set of moments for various wind speeds. A moment sensor provides a momentsignal output. An instantaneous wind speed indicator provides an instantaneous windspeed value output. A conversion logic connected to the moment signal and to theinstantaneous wind speed value, provides a calculated pitch modulation command.Combining logic connected to the calculated blade pitch modulation commandand to the collective pitch command, provides a combined blade pitch command,which includes compensation for instantaneous moment deviations of the windturbine.