- Preprint
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09 Jul 2020
09 Jul 2020
Abstract. A previously published wind sensing method is applied to an experimental dataset obtained on a 3.5 MW turbine and a nearby hub-tall met-mast. The method uses blade load harmonics to estimate rotor-equivalent shears and wind directions at the rotor disk. A second independent method is used to extend the met-mast-measured shear above hub height to cover the entire rotor disk.
Although the experimental setup falls short of providing a real validation of the method, it still allows for a realistic practical demonstration of some of its main features. The method appears to be robust to turbulent fluctuations and air density changes. Results indicate a good quality of the estimated shear, both in terms of 10-min averages and of resolved time histories, and a reasonable accuracy in the estimation of the yaw misalignment.
Marta Bertelè et al.
Marta Bertelè et al.
Marta Bertelè et al.
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The interactive open-access journal of the European Academy of Wind Energy