Characterization of wind velocities in the upstream induction zone of a wind turbine using scanning continuous-wave lidars | Zendy

Eric Simley | Zendy; Nikolas Angelou | Zendy; Torben Mikkelsen | Zendy; Mikael Sjöholm | Zendy; Jakob Mann | Zendy; Lucy Y. Pao | Zendy

Open Access

Characterization of wind velocities in the upstream induction zone of a wind turbine using scanning continuous-wave lidars

Author(s) -

Eric Simley,

Nikolas Angelou,

Torben Mikkelsen,

Mikael Sjöholm,

Jakob Mann,

Lucy Y. Pao

Publication year - 2016

Publication title -

journal of renewable and sustainable energy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.475

H-Index - 43

ISSN - 1941-7012

DOI - 10.1063/1.4940025

Subject(s) - freestream , turbine , wind speed , wake , rotor (electric) , physics , wind power , degree of reaction , wind direction , mechanics , turbulence , geology , aerospace engineering , geodesy , meteorology , engineering , reynolds number , electrical engineering , quantum mechanics

As a wind turbine generates power, induced velocities, lower than the freestream velocity, will be present upstream of the turbine due to perturbation of the flow by the rotor. In this study, the upstream induction zone of a 225 kW horizontal axis Vestas V27 wind turbine located at the Danish Technical University's Riso campus is investigated using a scanning Light Detection and Ranging (lidar) system. Three short-range continuous-wave “WindScanner” lidars are positioned in the field around the V27 turbine allowing detection of all three components of the wind velocity vectors within the induction zone. The time-averaged mean wind speeds at different locations in the upstream induction zone are measured by scanning a horizontal plane at hub height and a vertical plane centered at the middle of the rotor extending roughly 1.5 rotor diameters (D) upstream of the rotor. Turbulence statistics in the induction zone are studied by more rapidly scanning along individual lines perpendicular to the rotor at differ...

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