Most literature on wind turbine control have focused on maximizing
power [2,4,15,17,18,27] for wind speed in the range between
the cut-in and the cut-out wind speed. This goal is usually achieved
by controlling the generator torque so that the rotor speed
producing the optimum power coefficient is attained. The wind
power is maximized predominantly when the wind speed is below
its rated value and the blade pitch angle is fixed.