Power performance optimization and loads alleviation with active flaps using individual flap control

WindEurope Summit 2016

Pettas, Vasilis^1 ; Barlas, Thanasis^1 ; Gertz, Drew^1 ; Madsen, Helge A.^1

Department of Wind Energy, Technical University of Denmark, Aerodynamic Design RisØ Campus, Frederiksborgvej 399, Roskilde

4000, Denmark^1

关键词: Active trailing edge flap;    Annual energy productions;    Cost of energies;    Fatigue loads;    Main bearings;    Power performance;    Root bending moment;    Sensor inputs;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/749/1/012010/pdf
DOI  :  10.1088/1742-6596/749/1/012010

来源: IOP

【 摘 要 】

The present article investigates the potential of Active Trailing Edge Flaps (ATEF) in terms of increase in annual energy production (AEP) as well as reduction of fatigue loads. The basis for this study is the DTU 10 MW Reference Wind Turbine (RWT) simulated using the aeroelastic code HAWC2. In an industrial-oriented manner the baseline rotor is upscaled by 5% and the ATEFs are implemented in the outer 30% of the blades. The flap system is kept simple and robust with a single flap section and control with wind speed, rotor azimuth, root bending moments and angle of attack in flap's mid-section being the sensor inputs. The AEP is increased due to the upscaling but also further due to the flap system while the fatigue loads in components of interest (blade, tower, nacelle and main bearing) are reduced close to the level of the original turbine. The aim of this study is to demonstrate a simple and applicable method that can be a technology enabler for rotor upscaling and lowering cost of energy.