Fatigue Damage Comparison of Mechanical Components in a Land-based and a Spar Floating Wind Turbine
Journal article, Peer reviewed
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Original versionProcedia Engineering. 2015, 101 (C), 330-338. 10.1016/j.proeng.2015.02.040
This paper investigates the fatigue damage of the gears and bearings in a land-based and a spar-type floating wind turbine. The reference 5 MW NOWITECH gearbox is used on a land-based and a floating spar wind turbine. First, the global analysis is carried out in an aero-hydro-servo-elastic code. Next, the forces, moments and motions from the global analysis are applied to the gearbox modelled in a Multi Body Simulation (MBS) and forces on gears and bearings are obtained. The fatigue damage is then calculated based on the SN-curve approach and Palmgren-Miner linear damage hypothesis in an identical wind condition and compared for both turbines.