Vibration Mitigation of Wind Turbine Towers with Tuned Mass Dampers - Wind Turbine Control and Monitoring - page 346

Table 12.6 Parameters of

Tower height h = 87.60 m

the onshore reference wind

Fundamental frequency of wind turbine f H = 0.324 Hz

turbine with TMD

Structural damping ratio of wind turbine D H = 1%

Modal mass of wind turbine m H = 403.969 t

Mass ratio TMD/m H l* = 5%

Fundamental frequency of TMD f D,opt = 0.309 Hz

Damping ratio of TMD D D,opt = 12.7 %

Fig. 12.11 Tower deflection
time histories of the onshore
reference wind turbine for the
cut-in, rated, and cut-out
wind speeds