An investigation of different offshore wind turbine jacket support foundation models designed for central Mediterranean deep waters

Thomas Gauci, Tonio Sant, Martin Muscat, Duncan Camilleri, Pierluigi Mollicone

Research output: Contribution to journalArticle

Abstract

The trend for improving the cost effectiveness of offshore wind turbines is to maximise wind turbine size while minimising support structure costs. Minimising the support structure costs in deeper waters is undoubtedly more challenging. Studies have shown that the type of foundation model used at the base of the support structure has a significant influence on the overall design result. Two foundation models are studied independently: the pinned foundation and the rigid foundation. The effect of the foundation type on the modelled
overall support structure characteristics, are investigated. The objective of this study is to produce an optimised jacket design for a 70 metre water depth in the central Mediterranean region. The study shows that different foundation types influence the internal loads of the individual jacket members and consequently affect the structure’s natural frequencies. The final result shows that the jacket structure with a rigid foundation design was 5.4 tonnes lighter than its pinned counterpart.
Original languageEnglish
Pages (from-to)229-242
Number of pages14
JournalWind Engineering
Volume37
Issue number3
Publication statusPublished - Jun 2013
EventOWEMES 2012, Offshore Wind & Other Marine Renewable Energies in Mediterranean & European Seas Conference - Hortensia Hall, Conference Centre, “Fiera di Roma”, Rome, Italy
Duration: 5 Sep 20127 Sep 2012

Keywords

  • wind turbine support structure
  • foundation models
  • wind turbine loads
  • deep water structures
  • renewable energy

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