Browsing NTNU Open by Author "Kelberlau, Felix"
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Better turbulence spectra from velocity–azimuth display scanning wind lidar
Kelberlau, Felix; Mann, Jakob (Journal article; Peer reviewed, 2019)Turbulent velocity spectra derived from velocity–azimuth display (VAD) scanning wind lidars deviate from spectra derived from one-point measurements due to averaging effects and cross-contamination among the velocity ... -
Condition monitoring of a generator cooling system in a hydropower plant
Lauvland, Marius (Bachelor thesis, 2019)This project thesis has investigated the potential for condition monitoring of a generator cooling system in a hydropower plant, using physical models on data from a SCADA system. The work has been supervised by Voith Hydro ... -
Cross-contamination effect on turbulence spectra from Doppler beam swinging wind lidar
Kelberlau, Felix; Mann, Jakob (Peer reviewed; Journal article, 2020)Turbulence velocity spectra are of high importance for the estimation of loads on wind turbines and other built structures, as well as for fitting measured turbulence values to turbulence models. Spectra generated from ... -
Taking the Motion out of Floating Lidar: Turbulence Intensity Estimates with a Continuous-Wave Wind Lidar
Kelberlau, Felix; Neshaug, Vegar; Lønseth, Lasse; Bracchi, Tania; Mann, Jakob (Peer reviewed; Journal article, 2020)Due to their motion, floating wind lidars overestimate turbulence intensity ( TI ) compared to fixed lidars. We show how the motion of a floating continuous-wave velocity–azimuth display (VAD) scanning lidar in all six ... -
Turbulence measurements with fixed and floating profiling wind lidar
Kelberlau, Felix (Doctoral thesis, 2020)Knowledge about turbulence in the wind helps estimate and optimize the profitability of wind turbines. Light detection and ranging (lidar) is a cost-efficient, flexible, and accurate remote sensing technology for measuring ...