Patent ID: 11905927
Assignee: VESTAS WIND SYSTEMS A/S
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC B  F

Claim 9:
10. The system according to claim 1, wherein the program code causes the system to determine the condition of the wind turbine based on the first spectral density by:
defining at least one working-point having a frequency corresponding to a harmonic of a rotation of the rotor;
determining one or more of a maximum amplitude, a mean amplitude, and a minimum amplitude for the at least one working-point;
comparing the one or more of the maximum amplitude, the mean amplitude, and the minimum amplitude for the at least one working-point to a respective alarm threshold; and
triggering an alarm if the one or more of the maximum amplitude, the mean amplitude, and the minimum amplitude of the at least one working-point exceeds the alarm threshold.