GreenTech 03 - WIND

Research

The overall aim of TP Wind is the reduction of levelised cost of energy from wind power. One of the cost factors for the large scale implementation of wind offshore (where the major increase is expected) is the amount and difficulty of maintenance. The limited accessibility of the turbines and the need for helicopters or boats is a major incentive for the development of turbines which are more reliable in the first place, and are better to be maintained once they are erected. EPFL has competence in the field of novel foundations materials like Ultra-High Performance Concrete, which they will investigate in its applicability for the changing loads on wind turbines, a field where DTU has much experience. The turbine loads are influenced by the wake field within the wind farm. Therefore, the fine-scale numerical modelling expertise at all four partners is combined with the wind tunnel experimental approach available at TUM and EPFL in order to derive an optimised wind farm control strategy and aerodynamic turbine design. At the same time, the noise emitted from the wind farms is calculated and optimised for, working on a topic which can often derail a wind farm project onshore. Finally, once erected and running, the turbines experience turbulence and wakes, both due to the frequently changing loads on the structure potentially damaging. The early prediction and detection of those damages is the final topic being investigated, combining the expertise at TUM in the perception inspired evaluation of auditory signals with the acoustic 4D holography approach developed at TU/e. This project has the potential to decrease installation and operation cost for wind farms on and offshore, while a successful project could form the nucleus of one or two EU projects should the right calls come up. The EuroTech research project is embedded in the general project and research work ongoing at the institutes.

Publications

Stein, V. & Kaltenbach, H.-J.: "Wind-tunnel modelling of the tip-speed ratio influence on the wake evolution", 2016.

Grawunder, M., Reß, R., Stein, V., Breitsamter, C., & Adams, N. A. "Validation of a Flow Simulation for a Helicopter Fuselage Including a Rotating Rotor Head", 2016. 

Hornfeck, C., Geiss, C., et. al.: "Comparative Study of State of the Art Nondestructive Testing Methods with the Local Acoustic Resonance Spectroscopy to Detect Damages in GFRP", 2015.

Geiss, C., Hornfeck, C.: "Comparison of Mobile Non-Destructive testing methods to detect impact damages in fibre reinforced plastics". Bremen, 2015.

Geiss, C., Eiband, T.: "Energy Harvesting Sources for Structural Monitoring in Wind Turbines". Geneva, 2015.

Geiss, C.: "Economic aspects of prognostics and health management systems in the wind Industry", 2014.

Grawunder, M., Reß, R. , Stein, V. et al.: "Flow simulation of a five: bladed rotor head", 2014.

Team

Project team leader

Dipl.-Ing. Clara Hollomey
Associated Institute Audio Information Processing

Doctoral researcher

Gaetano Andreisek
Associated Institute Audio Information Processing

Doctoral researcher

Christian Geiss

Doctoral researcher

Victor Stein
Aerodynamics

Doctoral researcher

Konstantin Vachnadze
Aerodynamics

Principal investigator

Professor Christian U. Grosse
Chair of Non-destructive Testing

Principal investigator

Professor Hans-Jakob Kaltenbach
Aerodynamics

Principal investigator

Professor Bernhard Seeber
Associated Institute Audio Information Processing