Development and Validation of Methodologies for Structural Monitoring of Floating Wind Turbines
Deadline for manuscript submissions: 25 April 2024 | Viewed by 133
Interests: operational modal analysis; floating wind turbines; structural dynamics; structural health monitoring
Interests: data-driven structural health monitoring; structural dynamics; virtual sensing; offshore wind turbines
Interests: structural health monitoring; operational modal analysis; wind turbines; structural dynamics
Special Issues, Collections and Topics in MDPI journals
With an increase in environmental concerns, the search for sustainable energy scenarios has been gaining more and more attention from academic research projects and industries in recent years. In particular, with the advent of floating platform solutions, the exploration of wind energy in offshore scenarios—which until very recently was confined to lower depths where bottom-fixed solutions (e.g., gravity structures and monopiles) for the overall stability of the system are used—has been successfully extended to deeper waters, which offer optimal conditions due to higher mean wind speeds and lower turbulence winds.
Although placing a wind turbine on top of a floating platform entails additional challenges for the design and operation teams, the particular dynamic nature of these complex structures also allows for the definition of new monitoring strategies that are still mostly unexplored, but which may play a very important role for the better, more efficient management and exploration of floating offshore wind farms.
This Special Issue aims not only to explore the extension and validation of conventional structural monitoring techniques to the offshore field, but also to develop new methodologies which are specially designed for these structures, with a particular focus on approaches for enhanced structural health monitoring, operational modal analysis and fatigue damage evaluation.
Dr. Francisco Pimenta
Dr. Eleonora Tronci
Dr. Sérgio Pereira
Manuscript Submission Information
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- floating wind turbines
- operational modal analysis
- structural dynamics
- structural health monitoring
- fatigue evaluation
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: On the effect of non linear damping sources in output-only identification methods applied to floating wind turbines
Authors: Francisco Pimenta; Vitor Liotto Pedrelli; Thea Vanelli; Filipe Magalhães
Affiliation: Faculty of Engineering of the University of Porto
Abstract: Output-only methods for modal identification are only strictly valid if a set of requirements are fulfilled regarding both structural and environmental conditions A particularly challenging effect in wind turbine dynamics is the significant presence of non-linear damping sources coming from the aerodynamic forces and, in offshore applications, the hydrodynamic forces on the sub-structure. In this work, the impact of these terms is firstly discussed in analytical grounds and then the corresponding effect on the performance of the covariance driven stochastic subspace identification is evaluated on a single degree of freedom model. The analysis is then extended to full hydro-aero-elastic simulation of a 5MW floating wind turbine using OpenFAST, mimicking the structural response in free decay tests and in parked conditions with turbulent wind fields. The results show that output-only identification methods are applicable in these challenging scenarios, but the results obtained must be carefully interpreted, since their dependence on the environmental conditions and motion amplitude imply that they are not directly translated into the structure properties, although still closely related to them.