Environmental Engineering Reference
In-Depth Information
Fig. 12.12 Frequency
spectra of the onshore
reference wind turbine tower
response for the cut-in, rated,
and cut-out wind speeds
spectrum, where mainly two particular frequencies are being excited: the first
natural frequency of tower fore-aft mode and the 3P-frequency. At rated and cut-
out wind speeds, the response of the tower is more stochastic within broadband
