IMPER: Characterization of the Wind Field over a Large Wind Turbine Rotor: Final report

Publication: ResearchReport – Annual report year: 2012


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A modern wind turbine rotor with a contemporary rotor size
would easily with the tips penetrate the air between 116 m
and 30 m and herby experience effects of different wind.
With current rules on power performance measurements such
as IEC 61400-121 the reference wind speed is measured at
hub height, an oversimplification of the wind energy power
over the rotor disk area is carried out.
The project comprised a number of innovative and
coordinated measurements on a full scale turbine with remote
sensing technology and simulations on a 500 kW wind
turbine for the effects of wind field characterization.
The objective with the present report is to give a short
overview of the different experiments carried out and results
obtained within the final phase of this project.
Original languageEnglish
PublisherWind Energy Department, Technical University of Denmark
Number of pages335
ISBN (electronic)978-87-92896-00-1
StatePublished - 2012
SeriesDTU Wind Energy E


  • DTU-Wind-Energy-E-0002(EN), DTU-Wind-Energy-Report-E-0002
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