Community Research and Development Information Service - CORDIS

Abstract

"Complex terrain sites are a major and critical market for wind energy development and knowledge regarding the wind structure and the WT response to it is still lacking. The work undertaken and completed in this project identifies and quantifies the complex terrain wind structure conditions which are found to be different from the flat terrain standards and through the development of a parameter identification methodology it identifies, evaluates and quantifies the machine's performance sensitivity to the Wind-WT parameters. New data, for wind & machine loading, critical for standards development was also produced within the framework of COMTERID project.
The technical content of the project was based on the following actions:
- The complex terrain wind macro- and micro- characteristics, i.e. the full wind fetch (3D wind profile under which a WT operates) and its turbulent characteristics (rotor 3D wind structure) were established through existing data compilation, a new large scale wind experiment, and wind structure numerical modelling.
- The complex terrain wind macro- and micro- characteristics, were correlated to the full WT response (mean loading, fatigue & power performance) through existing data from Stall and Pitch WTs, new measurements on Stall, Pitch, Variable Speed, Soft Yaw and large sized WTs (up to 1000kW) and numerical modelling. Design tool validation was a critical part of the work.
- The major parameters of the system Wind-WT were identified, studied and understood in detail and the sensitivity of the system output (power, loads) to the system design parameters (design envelope of the machine) was studied and quantified for representative wind conditions at a complex terrain environment. This was accomplished with the development of a parameter identification methodology and evaluation of the machine's performance sensitivity to the Wind-WT parameters.
- Synthesis of the findings and investigation whether machines designed for flat terrain a

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