Hybrid Model Representation of a TLP Including Flexible Topsides in Non-Linear Regular Waves

Energies

Christof Wehmeyer²  Francesco Ferri¹  Morten Thøtt Andersen¹ 

[1]Department of Civil Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg 9000, Denmark

[2] E-Mails:

[3]Rambøll Offshore Wind, Esbjerg 6700, Denmark

[4] E-Mail:

关键词: floating wind turbine;    TLP;    non-linear wave;    physical model test;    ultimate limit state wave load;   

DOI  :  10.3390/en7085047

来源: mdpi

【 摘 要 】

The rising demand for renewable energy solutions is forcing the established industries to expand and continue evolving. For the wind energy sector, the vast resources in deep sea locations have encouraged research towards the installation of turbines in deeper waters. One of the most promising technologies able to solve this challenge is the floating wind turbine foundation. For the ultimate limit state, where higher order wave loads have a significant influence, a design tool that couples non-linear excitations with structural dynamics is required. To properly describe the behavior of such a structure, a numerical model is proposed and validated by physical test results. The model is applied to a case study of a tension leg platform with a flexible topside mimicking the tower and a lumped mass mimicking the rotor-nacelle assembly. The model is additionally compared to current commercial software, where the need for the coupled higher order dynamics proposed in this paper becomes evident.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland