2.1 MW Wind Turbine Performance and Dynamic Analysis using Power Curve

Power curve analysis of wind turbine is done using measured data available for a specific wind turbine which has rated power of ∼ 2.1 MW with a rotor diameter of 95m and with hub height of ∼ 90m. Performance of a wind turbine is dependent upon the parameters namely power coefficient, Cp, Torque coefficient, Ct and Thrust coefficient, CT. The operating state of a turbine is estimated using blade pitch angle position, rotor rotational speed, between, cut-in, rated and cutout wind speeds. They are specific to a given turbine configuration, as well as the characteristic of turbine technology used. Data analysis shows values of 0.41&0.43 for Cp, a maximum value of 0.95 for CT and ∼0.08 for Ct. Analysis of turbine design includes blade rotational speeds and pitch angles, design tip speed ratio. Time series analysis of data set establishes the dynamic turbine behaviour for electric power, main shaft torque.