Results 31 to 40 of about 285,442 (311)
Applied Sciences, 2022 This study aims to calculate the ultimate loads through integrated load analysis under aerodynamic imbalance by individual pitch movement of offshore wind turbines, and based on this, to identify the allowable region of the individual pitch angle of the ...
Bae-Sung Kim +3 more
doaj +1 more source
Control Algorithm for Parallel Connected Offshore Wind Turbine Generators
Energies, 2021 A control algorithm for Parallel Connected Offshore Wind Turbines with permanent magnet synchronous Generators (PCOWTG) is presented in this paper. The algorithm estimates the optimal collective speed of turbines based on the estimated mechanical power ...
Emir Omerdic +3 more
doaj +1 more source
Applied Sciences, 2023 Among renewable energy technologies, wind energy features one of the best possibilities for large-scale integration into power systems. However, there are specific restrictions regarding the installation areas for this technology, thus resulting in a ...
P. Zambrana +4 more
doaj +1 more source
Development of Hardware-in-the-Loop-Simulation Testbed for Pitch Control System Performance Test
Energies, 2019 This paper deals with the development of a wind turbine pitch control system and the construction of a Hardware-in-the-Loop-Simulation (HILS) testbed for the performance test of the pitch control system.
Jongmin Cheon +4 more
doaj +1 more source
Computational fluid dynamics trimming of helicopter rotor in forward flight
Advances in Mechanical Engineering, 2020 A computational fluid dynamics (CFD) trimming method based on wind tunnel and flight test data is proposed. Aerodynamic coefficients obtained for a helicopter rotor using this method were compared with both experimental data from a test report and CFD ...
Chenglong Zhou, Ming Chen
doaj +1 more source
Identification in closed‐loop operation of models for collective pitch robust controller design [PDF]
Wind Energy, 2012 ABSTRACTTo achieve load reduction and power optimization, wind turbine controllers design requires the availability of reliable control‐oriented linear models. These are needed for model‐based controller design. Model identification of wind turbine while operating in closed loop is an appropriate solution that has recently shown its capabilities when ...
Iribas, Mikel, Landau, Ioan Doré
openaire +2 more sources
Energy Reports, 2023 For wind turbines operating in the full load region, stabilizing the generated power at its nominal value is a key objective. Furthermore, the control of tower vibrations is a major constraint in wind turbine structures because diverse loading sources ...
Manuel Lara +3 more
doaj +1 more source
A Comparative Study of Optimal Individual Pitch Control Methods
Sustainability, 2023 Wind turbines are subjected to asymmetric loads and fatigue with subsequent increases in their dimension and capacity, leading to a reduction in their lifetime.
A. Routray +3 more
semanticscholar +1 more source
Main rotor-tail rotor intraction and its implications for helicopter directional control [PDF]
, 2008 Aerodynamic interference between the main and tail rotor can have a strong negative influence on the flight mechanics of a conventional helicopter. Significant unsteadiness in the tail rotor loading is encountered under certain flight conditions, but the
Brown, R.E., Fletcher, Timothy M.
core +1 more source
Parameterized Disturbance Observer Based Controller to Reduce Cyclic Loads of Wind Turbine
Energies, 2018 This paper is concerned with bump-less transfer of parameterized disturbance observer based controller with individual pitch control strategy to reduce cyclic loads of wind turbine in full load operation.
Raja M. Imran +2 more
doaj +1 more source