Potentials for site-specific design of MW sized wind turbines

Thomsen, K Fuglsang, P Schepers, G

K. Thomsen et al., Potentials for site-specific design of MW sized wind turbines, J SOL ENERG, 123(4), 2001, pp. 304-309

8

INGLESE

Article

Environmental Engineering & Energy

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME

0199-6231 → ACNP

123

4

2001

304 - 309

ISI

0199-6231(200111)123:4<304:PFSDOM>2.0.ZU;2-C

The potential for site specific design of MW sized wind turbines is quantif ied by comparing design loads for wind turbines installed tit a range of di fferent sites. The sites comprise on-shore normal flat terrain stand-alone conditions and wind farm conditions together with offshore and mountainous complex terrain wind farms. The design loads are established for a 1 MW act ive stall regulated wind turbine with the aeroelastic code HAWC. The load a nalysis is limited to fatigue loads. We do not consider ultimate loads in t his paper. The results illustrate the differences in design wind conditions for different sites and the related differences in design loads for the 1 MW wind turbine. Based oil the difference in the design loads, the potentia ls for site specific design of the wind turbine main components are identif ied. The results show that the variation in aerodynamically driven loads an d energy production can be more than 50% between the different sites. It is concluded that site specific design is feasible for some of the main compo nents. In particular site specific changes are feasible for the tower nacel le components, and for the blades in the flapwise direction. It is also eva luated whether the IEC61400-1 standard [see Ref. [4], International Electro chemical Commission (1999)] is representative for the different sites. A co mparison with design loads based on the IEC61400-1 illustrates thar the six different sites can be described by the standard design classes.