Alhrshy, L.; Lippke, A.; Jauch, C. Variable Blade Inertia in State-of-the-Art Wind Turbine Structural-Dynamics Models. Energies2023, 16, 6061.
Alhrshy, L.; Lippke, A.; Jauch, C. Variable Blade Inertia in State-of-the-Art Wind Turbine Structural-Dynamics Models. Energies 2023, 16, 6061.
Alhrshy, L.; Lippke, A.; Jauch, C. Variable Blade Inertia in State-of-the-Art Wind Turbine Structural-Dynamics Models. Energies2023, 16, 6061.
Alhrshy, L.; Lippke, A.; Jauch, C. Variable Blade Inertia in State-of-the-Art Wind Turbine Structural-Dynamics Models. Energies 2023, 16, 6061.
Abstract
This paper presents a comparison of two methods to represent variable blade inertia in two codes for aero-servo-elastic simulations of wind turbines: the nonlinear aeroelastic multi-body model HAWC2 and the nonlinear geometrically exact beam model BeamDyn for OpenFAST. The main goal is to enable these tools to simulate the dynamic behavior of a wind turbine with variable blade inertia. However, in order to simulate the structural response of wind turbines with variable blade inertias, the source code of load simulation tools need to be modified. This is due to the fact that, currently, state-of-the-art load simulation tools for wind turbines are unable to simulate variable rotor blade inertias. The validity of the modified codes is proven based on a simple beam model. The validation shows very good agreement between the modified codes of HAWC2, BeamDyn and an analytical calculation. The add-on of variable blade inertias is applied to reduce the mechanical loads of a 5 megawatt reference wind turbine with an integrated hydraulic-pneumatic flywheel in its rotor blades.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
