Application of two passive strategies on the load mitigation of large offshore wind turbines

WindEurope Summit 2016

Shirzadeh, Rasoul^1 ; Kühn, Martin^1

ForWind-Center for Wind Energy Research, Institute of Physics, Carl von Ossietzky University of Oldenburg, Küpkersweg 70, Oldenburg

26129, Germany^1

关键词: Aero-elastic simulations;    Damage equivalent loads;    Integrated designs;    Jacket structures;    Numerical results;    Structural vibrations;    Support structures;    Tuned mass dampers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/749/1/012011/pdf
DOI  :  10.1088/1742-6596/749/1/012011

来源: IOP

【 摘 要 】

This study presents the numerical results of two passive strategies to reduce the support structure loads of a large offshore wind turbine. In the first approach, an omnidirectional tuned mass damper is designed and implemented in the tower top to alleviate the structural vibrations. In the second approach, a viscous fluid damper model which is diagonally attached to the tower at two points is developed. Aeroelastic simulations are performed for the offshore 10MW INNWIND.EU reference wind turbine mounted on a jacket structure. Lifetime damage equivalent loads are evaluated at the tower base and compared with those for the reference wind turbine. The results show that the integrated design can extend the lifetime of the support structure.