Table 1 Basic parameters of wind turbines.

From: Study on load reduction and vibration control strategies for semi-submersible offshore wind turbines

Parameter

IEA 15 MW

Rated power

15 MW

N blades

3

Rotor diameter

240 m

Hub height

150 m

Rotor orientation

Upwind

Cut-in wind speed

3 m/s

Rated wind speed

10.74 m/s

Cut-out wind speed

25 m/s

Design tip speed ratio

9

Drive train

Low speed. Direct drive