6533b7d7fe1ef96bd12679a8

RESEARCH PRODUCT

Modelling and optimization of a passive structural control design for a spar-type floating wind turbine

Huijun GaoYulin SiHamid Reza Karimi

subject

OptimizationEngineeringbusiness.industryFloating wind turbineStructural engineeringDegrees of freedom (mechanics)TurbineModellingSparFAST-SCNonlinear systemPassive structural controlStructural loadTuned mass damperEstimation; FAST-SC; Floating wind turbine; Modelling; Optimization; Passive structural control; Spar; Civil and Structural EngineeringSparReduction (mathematics)businessEstimationFloating wind turbineCivil and Structural Engineering

description

Abstract Compared with fixed-bottom installation, deep water floating wind turbine has to undergo more severe structural loads due to extra degrees of freedom. Aiming for effective load reduction, this paper deals with the evaluation of a passive structural control design for a spar-type floating wind turbine, and the proposed strategy is to install a tuned mass damper (TMD) into the spar platform. Firstly, a mathematical model for wind turbine surge-heave-pitch motion is established based on the D’Alembert’s principle of inertial forces. Then, parameter estimation is performed by comparing the outputs from the proposed model and the state-of-the-art simulator. Further, different optimization methods are adopted to optimize TMD parameters when considering different performance indices. Finally, high fidelity nonlinear simulations with previous optimized TMD designs are conducted under different wind and wave conditions. Simulation results demonstrate both the effectiveness and limitation of different TMD parameter choices, providing parametric analysis and design basis for future improvement on floating wind turbine load reduction with structural control methods.

yearjournalcountryeditionlanguage
2014-06-01Engineering Structures
https://doi.org/10.1016/j.engstruct.2014.03.011