-specific power coefficient, which has a theoretical maximum of
0.593 (Betz,
1966). Practically, however, the power coefficient of modern wind turbines typically
has highest values of 0.40 – 0.50, for wind speeds between 5 and 10 m s 1. The effective power
curve, i.e., the actual power produced by a given turbine as a function of wind speed, needs to be
determined empirically, and is made available
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