Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO443: A novel mooring system for the spar floating wind turbine: A fully-coupled aero-hydro-servo-elastic study
Naghmeh Akbari zadeh, PhD student, Dundalk Institute of Technology
Abstract
The energy crisis and geopolitical events had significant effects on energy security and highlighted the urgent need for increased investment and development in renewable energy sectors. As a part of this sector, floating offshore wind turbines (FOWTs) play an important role in extracting the energy available in deep waters. However, the presence of huge environmental loading such as wave, wind, tidal/ocean current loading, make these floating platforms operating conditions complex. The mooring system has a crucial role in keeping the stability of the floating offshore wind turbines in mild to extreme operating conditions. To optimise the FOWTs performance, monitoring and development of these important components is of great importance. In this paper, to find an optimised configuration, a novel mooring system arrangement of NREL spar wind turbine is analysed under a range of irregular wave and turbulent wind loading at a site in the Atlantic Ocean off Ireland’s. To best simulate the real-site operating conditions, an aero-hydro-servo-elastic fully-coupled tool called F2A is utilised. F2A consists of ANSYS AQWA and OpenFAST software packages, and it covers a wide range of modules for fixed and floating wind turbines. This paper provides valuable insights into wind turbine optimisation employing this novel tool. Additionally, the results indicate the super priorities and negative aspects of the novel mooring system arrangement over the conventional types. The obtained results show the substantial effects of mooring system on the motion amplitudes, and consequently on wind turbine’s power generation. Meaning the novel mooring system is designed not only for station-keeping but also to beneficially influence platform motions, thereby improving aerodynamic performance. Finally, the important role of the controllers, which are blade pitch and torque, are discussed. The blade pitch controller maintains the thrust force within a constant range, which directly influences the platform’s surge motion.
