Abstract
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.
Highlights
The design trend in the wind turbine industry leads towards larger multi MW rotors where the reduction of design loads and aerodynamic optimization becomes more significant
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
In the present work all simulation activities are based on HAWC2 aeroelastic code [3] using the verified flap model implementation [4] with the unsteady aerodynamics using the ATEF dynamic stall model implementation [5]
Summary
The design trend in the wind turbine industry leads towards larger multi MW rotors where the reduction of design loads and aerodynamic optimization becomes more significant. In order to calculate the loads according to the industrial standard for load certification, the calculations are based on DLC 1.2 NTM (as stated on IEC standard 61400-1, third edition) an overview of which is presented in [6] along with the post processing tools in [7]. The approach in this work focuses on increasing AEP and reducing design fatigue loads to the original baseline load envelope using the active flap system in order to enable efficient rotor upscaling. This approach, along with a robust and simplified control implementation, establishes a close connection to a possible industrial application of such a system
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
