On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach
The effect of intermittent and Gaussian inflow conditions on wind energy converters is studied experimentally. Two different flow situations were created in a wind tunnel using an active grid. Both flows exhibit nearly equal mean velocity values and turbulence intensities but strongly differ in...
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Copernicus Publications
2017-01-01
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| Series: | Wind Energy Science |
| Online Access: | https://www.wind-energ-sci.net/2/1/2017/wes-2-1-2017.pdf |
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doaj-dfe76ca1c5714d8fab6940c10f5035702020-11-24T23:57:32ZengCopernicus PublicationsWind Energy Science2366-74432366-74512017-01-01211310.5194/wes-2-1-2017On the impact of non-Gaussian wind statistics on wind turbines – an experimental approachJ. Schottler0N. Reinke1A. Hölling2J. Whale3J. Peinke4M. Hölling5ForWind, University of Oldenburg, Institute of Physics, Küpkersweg 70, 26129 Oldenburg, GermanyForWind, University of Oldenburg, Institute of Physics, Küpkersweg 70, 26129 Oldenburg, GermanyForWind, University of Oldenburg, Institute of Physics, Küpkersweg 70, 26129 Oldenburg, GermanyMurdoch University, School of Engineering and Information Technology, Murdoch, WA, 6150, AustraliaForWind, University of Oldenburg, Institute of Physics, Küpkersweg 70, 26129 Oldenburg, GermanyForWind, University of Oldenburg, Institute of Physics, Küpkersweg 70, 26129 Oldenburg, GermanyThe effect of intermittent and Gaussian inflow conditions on wind energy converters is studied experimentally. Two different flow situations were created in a wind tunnel using an active grid. Both flows exhibit nearly equal mean velocity values and turbulence intensities but strongly differ in their two point statistics, namely their distribution of velocity increments on a variety of timescales, one being Gaussian distributed, and the other one being strongly intermittent. A horizontal axis model wind turbine is exposed to both flows, isolating the effect on the turbine of the differences not captured by mean values and turbulence intensities. Thrust, torque and power data were recorded and analyzed, showing that the model turbine does not smooth out intermittency. Intermittent inflow is converted to similarly intermittent turbine data on all scales considered, reaching down to sub-rotor scales in space. This indicates that it is not correct to assume a smoothing of intermittent wind speed increments below the size of the rotor.https://www.wind-energ-sci.net/2/1/2017/wes-2-1-2017.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
J. Schottler N. Reinke A. Hölling J. Whale J. Peinke M. Hölling |
| spellingShingle |
J. Schottler N. Reinke A. Hölling J. Whale J. Peinke M. Hölling On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach Wind Energy Science |
| author_facet |
J. Schottler N. Reinke A. Hölling J. Whale J. Peinke M. Hölling |
| author_sort |
J. Schottler |
| title |
On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach |
| title_short |
On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach |
| title_full |
On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach |
| title_fullStr |
On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach |
| title_full_unstemmed |
On the impact of non-Gaussian wind statistics on wind turbines – an experimental approach |
| title_sort |
on the impact of non-gaussian wind statistics on wind turbines – an experimental approach |
| publisher |
Copernicus Publications |
| series |
Wind Energy Science |
| issn |
2366-7443 2366-7451 |
| publishDate |
2017-01-01 |
| description |
The effect of intermittent and Gaussian inflow conditions on wind energy
converters is studied experimentally. Two different flow situations were
created in a wind tunnel using an active grid. Both flows exhibit nearly
equal mean velocity values and turbulence intensities but strongly differ in
their two point statistics, namely their distribution of velocity increments
on a variety of timescales, one being Gaussian distributed, and the other one
being strongly intermittent. A horizontal axis model wind turbine is exposed
to both flows, isolating the effect on the turbine of the differences not captured by mean
values and turbulence intensities. Thrust, torque and power
data were recorded and analyzed, showing that the model turbine does not
smooth out intermittency. Intermittent inflow is converted to similarly
intermittent turbine data on all scales considered, reaching down to
sub-rotor scales in space. This indicates that it is not correct to assume a
smoothing of intermittent wind speed increments below the size of the rotor. |
| url |
https://www.wind-energ-sci.net/2/1/2017/wes-2-1-2017.pdf |
| work_keys_str_mv |
AT jschottler ontheimpactofnongaussianwindstatisticsonwindturbinesanexperimentalapproach AT nreinke ontheimpactofnongaussianwindstatisticsonwindturbinesanexperimentalapproach AT aholling ontheimpactofnongaussianwindstatisticsonwindturbinesanexperimentalapproach AT jwhale ontheimpactofnongaussianwindstatisticsonwindturbinesanexperimentalapproach AT jpeinke ontheimpactofnongaussianwindstatisticsonwindturbinesanexperimentalapproach AT mholling ontheimpactofnongaussianwindstatisticsonwindturbinesanexperimentalapproach |
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