Notes - Chapter 7 Summary

The following notes are taken from Wind Turbine Technology by Ahmad Hemami.

• Power is proportional to force required to move it and how fast the object moves
• can be proportional to torque and angular speed for rotational objects
• Power grasp from wind of a turbine is affected by how fast the turbine rotates and the pitch angle of blades
• relationship between power grasp and angular speed is not linear
• TSR is Tip speed ratio, ratio of tip of blade speed to wind speed
• depends on wind speed and turbine angular speed
• Power grasp depends on power coefficient not constant for turbine
• Turbine must operate at a speed where the power coefficient is around maximum value
• Daily production of turbine
• based on pattern of wind over 24 hr
• power multiplied by time for various values of turbine power
• Annual production is daily production multiplied by operating days while accounting for effect on density and temperature based on season

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