INNWIND
The INNWIND.EU project is focused on innovative offshore wind turbines at 50m water depths and beyond, which significantly lowers the Levelized Cost of Energy (LCOE).
- Investigate and demonstrate new designs for 10-20 MW offshore wind turbines and theircomponents.
- Develop methodologies for assessing innovative subsystem and turbine system designs.
November 2012 – October 2017
TU Delft contribution
Deliverable 1.1.2: Modelling of extreme wind conditions at higher atmospheres (M28)
From the measured external conditions the design parameters should be determined in order to be able to properly design an innovative wind conversion system. With respect to the extreme winds a new approach, called constrained stochastic simulation will be applied (see also D1.4.2). Required inputs for constrained stochastic simulation are turbulence spectra and the occurrence probability of gusts. Both wind statistics will be obtained on basis of the available wind measurements (D1.1.1). Furthermore, typical gust shapes will be determined from these wind measurements, which can serve as input for D1.2.3.
Deliverable 1.4.3 : Methods for feed-forward control and real time system simulator : Distributed flaps control, theory and prototype testing on a 0.5 – 1.0 MW rotor (month 58)
A new approach, called constrained stochastic simulation, will be applied for the extreme load analysis. Via constrained stochastic simulation gusts can be generated which satisfy some specified constraint. The advantage of constrained simulation is that any gust amplitude, no matter how large, can be chosen. The method will be refined on basis of the available wind measurements (D1.11 and D1.12); e.g. the gust shape can be adapted. The method will be made applicable for the reference turbine and a whole range of innovative design concepts.
Further reading
- INNWIND Homepage
- Leaflet 2016
- PhD thesis René Bos
- Constrained stochastic simulation of spatial wind gusts (deliverable D1.12)
- Applications of constrained stochastic simulation (deliverable D1.43)
- Software
The zip file contains a Matlab file for the generation of gusts. The applied method is described in the Innwind reports. Also two example files are provided how to use the gust generator. Furthermore, a file is given in order to write the gust to a Bladed wnd-file - Poster DEI poster event 2014
- Poster Science of Making Torque 2014
- Poster Science of Making Torque 2016