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.