METHOD OF DETERMINING A PHASE VALUE OF A PHASE ASSOCIATED WITH AN OSCILLATORY TOWER MOVEMENT OF A TOWER OF A WIND TURBINE, DEVICE FOR DETERMINING A PHASE VALUE OF A PHASE ASSOCIATED WITH AN OSCILLATORY TOWER MOVEMENT OF A TOWER OF A WIND TURBINE, AND METHOD OF OPERATING A WIND TURBINE

摘要

A method is provided of determining a phase value of a phase associated with an oscillatory tower movement of a tower of a wind turbine. The method includes measuring a quantity representative of the oscillatory tower movement, and determining the phase value based on the measured quantity. In an exemplary embodiment, the determination of the phase value is includes applying a Fourier Transformation on the measured quantity.