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Analysis of the Stress in the Anchors of Floating Wind Turbines in the Open Sea

Abstract:

In this research, the bending stresses produced in the anchors of offshore wind turbines and their maximum rupture limits are analyzed. The aim is to avoid reaching these maximum limits and to guarantee the correct operation of electricity production systems through wind turbines in the open sea as an interesting option in energy transition processes. The transient behavior of the wind turbine structure is improved, as long as the fixings of the anchor points are guaranteed and the position of the wind turbine is vertical as far as possible. In reality, waves produce tension fluctuations in the mooring lines, which means that the wind input is not as constant at the level of the blades. However, this fluctuation is significantly reduced thanks to the hydrodynamic damping, it is there where the anchor points play a transcendental role and guarantee the stability of the turbine.