Question

3. Characteristics of wind turbine is given in the figure below (blue curve). The radius of rotor blade is 75 m and air density is 1.23 kg/m³. The turbine is designed for the rated wind speed of 10 m/s. a. What is the optimal tip-speed ratio? What is the speed rating of the wind turbine in rpm? b. Determine the power rating of the turbine. c. If the wind speed is 8 m/s and the turbine is rotating at 6.11 rpm. What is the tip-speed ratio and the output powers of turbine and generator in this operating condition. The gearbox and generator efficiencies are 78% and 89%, respectively.

          3. Characteristics of wind turbine is given in the figure below (blue curve). The radius of rotor blade is 75 m and air density is 1.23 kg/m³. The turbine is designed for the rated wind speed of 10 m/s.

a. What is the optimal tip-speed ratio? What is the speed rating of the wind turbine in rpm?
b. Determine the power rating of the turbine.
c. If the wind speed is 8 m/s and the turbine is rotating at 6.11 rpm. What is the tip-speed ratio and the output powers of turbine and generator in this operating condition. The gearbox and generator efficiencies are 78% and 89%, respectively.

3. Characteristics of wind turbine is given in the figure below (blue curve). The radius of rotor blade is 75 m and air density is 1.23 kg/m³. The turbine is designed for the rated wind speed of 10 m/s.

a. What is the optimal tip-speed ratio? What is the speed rating of the wind turbine in rpm?
b. Determine the power rating of the turbine.
c. If the wind speed is 8 m/s and the turbine is rotating at 6.11 rpm. What is the tip-speed ratio and the output powers of turbine and generator in this operating condition. The gearbox and generator efficiencies are 78% and 89%, respectively.

Added by Mariah S.

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