Stochastic Dynamic Response Analysis of a 10 MW Tension Leg Platform Floating Horizontal Axis Wind Turbine

The dynamic response of floating horizontal axis wind turbines (FHWATs) are affected by the viscous and inertia effects. In free decay motion, viscous drag reduces the amplitude of pitch and roll fluctuation, the quasi-static mooring system overestimates the resonant amplitude values of pitch and roll. In this paper, the quasi-static mooring system is modified by introducing linear damping and quadratic damping. The dynamic response characteristics of the FHAWT modified model of the DTU 10 MW tension leg platform (TLP) were studied. Dynamic response of the blade was mainly caused by wind load, while the wave increased the blade short-term damage equivalent load. The tower base bending moment was affected by inclination of the tower and the misaligned angle βwave between wind and wave. Except the yaw motion, other degrees of freedom motions of the TLP were substantially affected by βwave. Ultimate tension of the mooring system was related to the displacement caused by pitch and roll motions, and standard deviation of the tension was significantly affected by the wave frequency response. Under the action of wave load, the viscous drag would stimulate the mooring system and increase the resonance of the platform motion.

[1]  Kobra Gharali,et al.  Dynamic stall simulation of a pitching airfoil under unsteady freestream velocity , 2013 .

[2]  Ajit R Godbole,et al.  Effects of aerodynamic damping on the tower load of offshore horizontal axis wind turbines , 2017 .

[3]  J. G. Leishman,et al.  A Semi-Empirical Model for Dynamic Stall , 1989 .

[4]  Zhiqiang Hu,et al.  Dynamic response and viscous effect analysis of a TLP-type floating wind turbine using a coupled aero-hydro-mooring dynamic code , 2016 .

[5]  Torgeir Moan,et al.  Design considerations for tension leg platform wind turbines , 2012 .

[6]  Moo-Hyun Kim,et al.  Rotor-floater-tether coupled dynamics including second-order sum–frequency wave loads for a mono-column-TLP-type FOWT (floating offshore wind turbine) , 2013 .

[7]  Jason Jonkman,et al.  Dynamics of offshore floating wind turbines—analysis of three concepts , 2011 .

[8]  Torgeir Moan,et al.  Wind-wave misalignment effects on floating wind turbines: motions and tower load effects , 2014 .

[9]  Jason Jonkman,et al.  Coupled Dynamic Modeling of Floating Wind Turbine Systems , 2006 .

[10]  Daniel Micallef,et al.  Measurements and modelling of the power performance of a model floating wind turbine under controlled conditions , 2015 .

[11]  Jason Jonkman,et al.  Dynamics of offshore floating wind turbines—model development and verification , 2009 .

[12]  Marit Irene Kvittem,et al.  Comparison of Numerical Models and Verification Against Experimental Data, Using Pelastar TLP Concept , 2015 .

[13]  Daniel Micallef,et al.  A study on the aerodynamics of a floating wind turbine rotor , 2016 .

[14]  Cheng Lu,et al.  Vibration-induced aerodynamic loads on large horizontal axis wind turbine blades , 2017 .

[15]  Jason Jonkman,et al.  The creation of a comprehensive metocean data set for offshore wind turbine simulations: Comprehensive metocean data set , 2016 .

[16]  Jason Jonkman,et al.  Wind/Wave Misalignment in the Loads Analysis of a Floating Offshore Wind Turbine , 2014 .

[17]  Torgeir Moan,et al.  Stochastic dynamic response analysis of a floating vertical‐axis wind turbine with a semi‐submersible floater , 2016 .

[18]  D. Matha.  Model Development and Loads Analysis of an Offshore Wind Turbine on a Tension Leg Platform with a Comparison to Other Floating Turbine Concepts: April 2009 , 2010 .

[19]  Robert Flemming Mikkelsen,et al.  Experimental and numerical study of a 10MW TLP wind turbine in waves and wind , 2016 .

[20]  Torgeir Moan,et al.  Wave- and Wind-Induced Dynamic Response of a Spar-Type Offshore Wind Turbine , 2012 .

[21]  Louis Angelo M. Danao,et al.  A numerical investigation into the influence of unsteady wind on the performance and aerodynamics of a vertical axis wind turbine , 2014 .

[22]  Yasunori Nihei,et al.  A comparative study of motion performance of four different FOWT designs in combined wind and wave loads , 2014 .

[23]  Pak Wai Chan,et al.  Investigation of offshore wind energy potential in Hong Kong based on Weibull distribution function , 2015 .

[24]  Miguel Esteban,et al.  Current developments and future prospects of offshore wind and ocean energy , 2012 .

[25]  Torgeir Moan,et al.  Modelling and Analysis of a Semi-Submersible Wind Turbine With a Central Tower With Emphasis on the Brace System , 2013 .

[27]  Qiang Zhu,et al.  Aerodynamic dissipation effects on the rotating blades of floating wind turbines , 2015 .

[28]  Yanqing Han,et al.  Stability and Dynamic Response Analysis of a Submerged Tension Leg Platform for Offshore Wind Turbines , 2017 .

[29]  Hao Sun,et al.  Feasibility study of a hybrid wind turbine system – Integration with compressed air energy storage , 2015 .

[30]  David A. Johnson,et al.  Numerical modeling of an S809 airfoil under dynamic stall, erosion and high reduced frequencies , 2012 .

[31]  Puyang Zhang,et al.  Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind turbines in clay , 2015 .