Patent ID: 8143739

Claim:
A wind turbine, comprising: a wind-driven rotor for converting wind energy to a mechanical driving force; a power converter for converting the driving force to exploitable power; a drive chain for rotatably transmitting the driving force to the power converter, the drive chain comprising at least one rotatable driving element, wherein at least the rotor and the at least one rotatable driving element of the drive chain define at least one torsional resonance frequency; and a detuner comprising: at least one mass element having a given mass inertia; and at least one elastic element having elastic properties, wherein the mass element and the elastic element are arranged to rotate during operation of the wind turbine, such that the torsional resonance frequency is influenced by the mass inertia and the elastic properties, and wherein the at least one mass element is coupled to the at least one rotatable driving element only through the elastic element.