Objective
The energy productivity of wind turbines is increasing through improvements in availability and design. Further gains may be expected but these will diminish as the energy extraction process approaches its limit. Consideration of the overall cost of energy is more important than the energy extraction process alone, and consequently, designs must be cost effective. Improved methods of control will reduce overall energy costs and the potential of two concepts which have shown promise in early tests will be studied. These are
Flap control
Airjet vortex generator control.
These retain the advantages of stall control but avoid problems associated with large actuator loads in a pitch controlled machine. Theoretical analyses and wind tunnel testing of these concepts will be effected. A blade set will be modified to test airjet vortex generators on a full-scale wind turbine. The targets include the optimisation of each concept, appraisal of their control characteristics, power curves and annual energy output.
Through the emphasis now being placed on renewable energy sources, the wind energy sector is receiving greater interest then ever before. Future wind turbines installed in Europe are likely to be of larger rotor size and greater efficiency to obtain the highest energy yield from the limited number of sites. Europe has a large number of private firms, research institutions, goverment agencies and electric companies working in the wind energy sector. The project must then have a European basis if this expertise is to be used to its greatest advantage.
Using a flap for aerodynamic control promises to combine the advantages of both stall and pitch control. The main objective is to compare flap control with existing aerodynamic control systems and compare loads and overall economy. A flap will provide precise control, simplified load paths reducing fatigue and rotor weight and requires lower actuating loads. The detailed tasks are
Define control concepts to be compared
Load calculations for specific critical load cases
Optimisation of flap design parameters
Verification of flap characteristics through wind tunnel testing
Outline design of rotor blade with flap
Power curve calculations and estimates of annual energy yield
Overall economic calculations for each concept
Airjet vortex generators may be another method of improving the performance and control of wind turbines.
Airjet vortex generators delay boundary layer separation and offer an increased lift to drag ratio over the upper half of the power curve.
Further gains may be realised in the post stall region if airjets can be used to tailor the power curve. The airflow for the airjets is available through natural pumping and the control system will be simple compared with pitch control. The detailed tasks are
Aerofoil selection from blade as used by wind turbine manufacturer
Design of airjet system using computational fluid dynamics
Optimisation of airjet system through wind tunnel testing
Performance calculations and estimation of annual energy yield
Detailed design of ducting and control strategies
Construction of blade test set
Erection and testing on full scale wind turbine
Analysis of operational results
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering control systems
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aircraft
- social sciences economics and business economics production economics productivity
- engineering and technology environmental engineering energy and fuels renewable energy wind energy
- natural sciences physical sciences classical mechanics fluid mechanics fluid dynamics computational fluid dynamics
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
EC1V0HB LONDON
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.