A generator driven by a wind turbine is required to deliver 6 MW of power at the generator terminals. The turbine is a two-blade propeller rotating about a horizontal axis and the maximum permitted shear stress of the turbine shaft is 55x106 N/m2 The rotor is designed to operate at a rotational speed of 70 revolution per seconds .The stage efficiencies are Cp 0.32, ngb 0.90, ng = 0.92. . (1) If the turbine delivers its rated %3! %3D power at a wind average speed of 23 m/s, calculate the corresponding diameter of the propeller and its TSR

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A generator driven by a wind turbine is required to deliver 6 MW of power at the generator terminals. The
turbine is a two-blade propeller rotating about a horizontal axis and the maximum permitted shear stress of
the turbine shaft is 55x10° N/m2 The rotor is designed to operate at a rotational speed of 70 revolution per
seconds .The stage efficiencies are Cp = 0.32, ngb = 0.90, ng = 0.92. . (1) If the turbine delivers its rated
power at a wind average speed of 23 m/s, calculate the corresponding diameter of the propeller and its TSR,
assuming a typical value for the overall efficiency. The air density may be assumed to have a value 1.29
kg/m. (1) Calculate the torque on the turbine shaft.
Area =
Radius=
Tip speed ratio =
shaft torque =
Transcribed Image Text:A generator driven by a wind turbine is required to deliver 6 MW of power at the generator terminals. The turbine is a two-blade propeller rotating about a horizontal axis and the maximum permitted shear stress of the turbine shaft is 55x10° N/m2 The rotor is designed to operate at a rotational speed of 70 revolution per seconds .The stage efficiencies are Cp = 0.32, ngb = 0.90, ng = 0.92. . (1) If the turbine delivers its rated power at a wind average speed of 23 m/s, calculate the corresponding diameter of the propeller and its TSR, assuming a typical value for the overall efficiency. The air density may be assumed to have a value 1.29 kg/m. (1) Calculate the torque on the turbine shaft. Area = Radius= Tip speed ratio = shaft torque =
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