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Effect of load reduction mechanisms on loads and blade bearing movements of wind turbines [PDF]
Wind Energy, 2020 The power control of wind turbines is usually realized via a change in the pitch angle of the rotor blades. Pitching facilitates the exact control of the turbines and the reliable deceleration of the rotor when required.
Matthias Stammler +4 more
doaj +5 more sources
Combined wind turbine fatigue and ultimate load reduction by individual blade control [PDF]
Journal of Physics: Conference Series, 2014 If each blade of the wind turbine has individual pitch actuator, there is possibility of employing the pitch system to mitigate structural loads through advanced control methods. Previously, considerable reduction of blade lifetime equivalent fatigue loads has been achieved by Individual Blade Control (IBC) and in addition, it has also been shown the ...
Han, Y, Leithead, W E
core +5 more sources
Load reduction characteristics of swept blade for 15 MW wind turbine [PDF]
Frontiers in Energy ResearchIntroductionSwept blades can achieve effective load reduction, thereby improving the operational performance of wind turbines. To investigate the impact of hundred-meter-level swept blades on the load characteristics of wind turbines, this paper takes ...
Lu Ma +7 more
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Analysis of Adaptive Individual Pitch Control Schemes for Blade Fatigue Load Reduction on a 15 MW Wind Turbine [PDF]
Applied Sciences, 2023 Individual pitch control (IPC) is a method to mitigate periodic blade loads in wind turbines, and it is typically implemented using the multi-blade coordinate (MBC) transform, which converts the blade load measurements from a rotating frame into the non ...
Manuel Lara +4 more
doaj +2 more sources
Data-driven state estimation toward blade individual load-reduction of wind turbines
Journal of Physics: Conference Series, 2022 Published by IOP Publ ...
Klein, Andreas +2 more
+5 more sources
Developing a passive load reduction blade for the DTU 10 MW reference turbine [PDF]
Journal of Physics: Conference Series, 2016 This paper presents the development of a passive load reduction blade for the DTU 10 MW reference wind turbine, using the aero-hydro-servo-elastic analysis tool 3DFloat. Passive load reduction is achieved by introducing sweep to the path of the blade elastic axis, so that out-of-plane bending deflections result in load alleviating torsional ...
J B de Vaal, T A Nygaard, R Stenbro
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A Methodology for Robust Load Reduction in Wind Turbine Blades Using Flow Control Devices [PDF]
Energies, 2021 Decades of wind turbine research, development and installation have demonstrated reductions in levelized cost of energy (LCOE) resulting from turbines with larger rotor diameters and increased hub heights. Further reductions in LCOE by up-scaling turbine size can be challenged by practical limitations such as the square-cube law: where the power scales
Abhineet Gupta +4 more
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Enhancement of Rotor Loading and Suppression of Stator Separation through Reduction of the Blade–Row Gap [PDF]
International Journal of Turbomachinery, Propulsion and Power, 2023 An immersed boundary (IB) method is applied to study the effect of the blade–row gap in a low-speed single-stage compressor. The advantage of using an IB method is that the rotor/stator interface can be eliminated and, thus, the blade–row interaction can be considered at an extremely small gap.
Wang, Zhuo, Du, Lin, Sun, Xiaofeng
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Energy Conversion and Management: XIn the context of flexible grid regulation, Francis turbines often operate under off-design conditions with frequent load transitions, during which cavitation vortices pose serious stability challenges. This study investigates the evolution of cavitating
Zhaoning Wang +5 more
doaj +2 more sources
Investigation of potential extreme load reduction for a two‐bladed upwind turbine with partial pitch [PDF]
Wind Energy, 2014 AbstractThis paper presents a wind turbine concept with an innovative design combining partial pitch with a two‐bladed (PP‐2B) turbine configuration. Special emphasis is on extreme load reduction during storm situations at standstill, but operational loads are also investigated. In order to compare the loads and dynamics of the PP‐2B turbine, a partial
Kim, Taeseong +2 more
openaire +3 more sources