The GWP-47 (by Global Wind Power)

The GWP47-750kW, designed by Norwin is an ASR regulated wind turbine with rotor diameter of 47 m. The turbine uses LM21.0P blades from LM Glasfiber. The blades can be turned to obtain optimal operational settings at both low and high wind speeds, a system we call ASR – Active Stall Regulation. The ASR wind turbines utilize the best things from both stall and pitch regulated wind turbines. An ASR turbine has the same regulation potential as a pitch regulated turbine; but by using the stall properties of the blades, the large load and power fluctuations that are typical for a pitch regulated machine are avoided.