Hy27 May 2011 18:59
http://www.bloomberg.com/news/2011-05-27/vestas-wind-systems-wins-order-for-73-turbines-from-terra-gen-power.html
....Technical details
This section needs additional citations for verification.
Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (February 2009)
Parameter Value
Rated Power 3000 kW
Concept Variable speed, DFIG generator with pitch control
Rotor diameter 90 metres (300 ft)
Speed control Independent pitch control to each blade
Generator Water cooled, various suppliers
Gearbox Hansen, two planetary and one helical, 1:100 step up (approx)
Cut In 4 m/s
Rated 15 m/s
Cut Out 25 m/s