Wind turbines
Electric wind turbines

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D3960 V1 Article

Wind turbines


Electric wind turbines

Authors : Bernard MULTON, Xavier ROBOAM, Brayima DAKYO, Christian NICHITA, Olivier GERGAUD, Hamid BEN AHMED

Publication date: November 10, 2004 | Lire en français

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2. Wind turbines

2.1 Wind characterization

The wind rose is a polar diagram that shows wind speed and direction over the period of record. Three elements are displayed (figure 5 ):

  • the percentage of the total time during which the wind blows in a given direction (indicated by the light blue sectors);

  • the percentage of total energy per sector (represented by the dark blue sectors). This indicates which direction provides the most energy;

  • the average turbulence intensity per sector, represented by a number displayed on each sector.

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