Question

The wind turbine has a gearbox between the wind turbine rotor and the generator to ensure that the generator rotates faster than the wind turbine rotor. The gear ratio of the wind turbine in this exercise is 108. What is the rotational speed of the wind turbine rotor \omega_{WTRmin}ω
WTRmin
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in the operation range A-B (picture from question 1)? (answer in rad/s)

Answer 1

Answer:

To calculate λ (TSR), we take the speed of the very tip of the “rotor” blade (2πrN/60, where r=blade radius and N=blade RPM) and divide by the wind velocity, v, in the same units (e.g., meters/sec, feet/sec, mph or whatever.)

Explanation:

Answer 2

Answer:

0.87

Explanation:

WTRmin=wmin/GR=94/108