By introducing a monitoring programme into the 1 MW NedWind wind turbine, it will be possible to gain a significant insight into the behaviour of a large stall regulated wind turbine in a fairly short time scale and at modest cost to the Joule II programme as a whole.
The objectives are :
1) To obtain detailed dynamic load and response data.
2) To evaluate current design methods against measured data and hence to improve predictive tools.
3) To verify the NedWind design.
Understanding of the behaviour of wind turbines has improved enormously in the last decade. There are however still areas which are poorly understood, such as the effect of scale and the nature of aerodynamic stall. Both fall into this category. This programme addresses both of the issues.
project "Mechanical loads Benchmark". Garrad Hassan (GH), Stork Product Engineering (SPE) and The Netherlands Energy Research Foundation (ECN) were all active members of this project. The understanding of the measured response from the present project will draw heavily on the project JOUR-0076.
the deterministic and turbulence sources to the total loading. The deterministic response of the wind turbine will be determined by GH using their aero elastic code, BLADED, and by SPE/ECN using their codes Flexhat and Phatas II respectively. The response to the turbulence will be calculated by GH using TURBLOAD and by SPE/ECN using Flexhat, Phatas II and Swift. A critical evaluation of the agreement between power spectral loads and those derived from the measured data will be made for blade, tower and shaft loads. A verification report will be made.
Funding SchemeCSC - Cost-sharing contracts
BS2 0QD Bristol
1000 AJ Amsterdam