Efficiency of Three Wind Turbines Installed on High Plains Region of Algeria

A Monthly Weibull parameter k and c and a variance for three stations located in the west of high plains of Algeria (Tiaret, Djelfa and El Bayadh) have been estimated using ten years of weather data. The Weibull parameters have been extrapolated to 45 meters taken as height of wind machine rotor. The corresponding mean cubic speeds of the selected sites and the mean monthly power density have been calculated. The most interesting wind potential is obtained for Tiaret region.Using a cut-in speed and a rated speed of a given generators, with 100 kW, 600 kW and 850 kW of nominal power, the monthly mean usable cubic wind speed for the selected sites has been computed.The results show that a 600 kW and 850 kW wind machine are quite equivalent, in useful power density sense. The choice of an appropriate wind machine will depend of local energy needs. A big decrease noticed during hot season can be completed by a supply source or solar system.