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Resource Documents by Stiesdal, Henrik

Schou Nielsen, Bo; and Stiesdal, Henrik
Trees, Forests and Wind Turbines — A Manufacturer’s View
High shear (different wind speeds at different heights) creates problems with power curves. A 2.3 MW with 82.4 m rotor and 60 m hub height has 3.5% less apparent power at 10 m/s if sited near a 20 m forest with m = 0.25 than if sited in open terrain with m = 0.14 (where m is shear). Bonus uses following rules of thumb for evaluation of possibility of power curve measurement: Shear not to exceed 0.20 This shear expected . . . Complete article »

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