Asymmetric load control for torsion fatigue reduction in a wind turbine tower

摘要

A method and system for reducing a torsional movement and/or a torsional loading of a tower of a wind turbine is disclosed includes generating a tower torsion signal with a detection system and providing the signal to an asymmetric load control assembly. The tower torsion signal may correspond to an actual torsional movement of the tower or a torsional loading of the tower. The asymmetric load control assembly is configured to mitigate an asymmetric load acting on the wind turbine using the tower torsion signal.

主权项

1. A wind turbine, comprising:
a lattice structure tower; a nacelle configured atop the tower; a rotor comprising a rotatable hub connected to a main shaft, and at least one rotor blade; a tower torsion detection system comprising a plurality of sensors circumferentially spaced about the lattice structure tower, the plurality of sensors operably configured to generate a tower torsion signal, wherein the tower torsion signal is at least one of: i) an actual torsional movement of the lattice structure tower, or ii) a torsional loading of the lattice structure tower; and, an asymmetric load control assembly communicatively coupled to the tower torsion detection system, the asymmetric load control assembly configured to:
receive the tower torsion signal,determine at least one of a magnitude or an orientation of an asymmetric load acting on the wind turbine based on the tower torsional signal, andimplement a control action to mitigate the asymmetric load acting on the wind turbine based on at least one of the magnitude or the orientation of the asymmetric load acting on the wind turbine.