A comparative calculation of the wind turbines ]capacities on the basis of the L-σ criterion

摘要

usually, wind sites are equipped with fast-running Horizontal Axis Wind Turbines of the airscrew type, which has a high efficiency. In this article, the argument is put forward that the choice of a wind turbine must not be based only on high efficiency. We propose a compara- tive criterion adapted to the comparison of a horizontal axis wind turbine with a vertical axis wind turbine: the L-σ criterion.