Dissertation > Excellent graduate degree dissertation topics show

Study on the Dynamic Response for Floating Foundation of Offshore Wind Turbine

Author: RuanShengFu
Tutor: TangYouGang
School: Tianjin University
Course: Design and manufacture of ships and marine structures
Keywords: offshore wind farm floating foundation water-entrapment plate dynamic response
CLC: TM315
Type: Master's thesis
Year: 2010
Downloads: 261
Quote: 1
Read: Download Dissertation

Abstract


The wind resources for ocean power generation are mostly distributed in sea areas with the distance of 5～50km from coastline, whose water depth are generally over 20m. To improve ocean power output and economic benefit of offshore wind farm, it is necessary to choose floating foundation for offshore wind turbine. Therefore, it is significant to study the dynamic characertistics for floating foundation of offshore wind turbine.This paper reviews the investigation situation of floating foundations for offshore wind turbines, and puts forward important considerations for design of a floating foundation, summarizes the theories about calculation of wind, wave and current load, and introduces methods to calculate responses of a floating structure in frequency and time domain respectively. According to basic data of a 600kW wind turbine with a horizontal shaft, tower, semi-submersible foundation and mooring system are designed detailedly to make motion of the floating foundation as small as possible.The water-entrapment plates, rotor and nacelle are treated properly, precise finite element models are established using GeniE in SESAM software. In HydroD, composite model is chosen, transfer functions and response spectrums of wave load and motion of floating wind turbine system are calculated. Considering the couple between wind turbine-tower-floating foundation and mooring lines, dynamic responses of floating wind turbine system under the combination of turbulent wind, constant current and irregular wave in a 60-meter-deep sea area are calculated in DeepC. The sea state for operational condition is determined by researching dynamic motion and lines’tension, and some suggestions are given for structural optimization.The results in time domain indicate that the designed floating wind turbine system can operate safely when significant wave height is no more than 4m. The methods to design floating foundation for offshore wind turbine and calculate its dynamic responses have some referenced value for exploitation of inshore and further offshore wind resources in our country.

Related Dissertations

  1. Numerical and Experimental Studies for Multi-Cracks of Asphalt Pavement with Semi-Rigid Basement Asphalt,U416.217
  2. Finite element analysis of gear transmission machine and Kinetics,TH132.41
  3. Dynamic model tests on tanks Platform,TE972
  4. Based on the deck of the lifting platform telescopic cylinders electro-hydraulic control system studies,TH137
  5. Gas flow adjustable dynamic response of solid rocket ramjet Process,V435
  6. Research on Dynamic Response and Crack Mechanism of Composite Pavement with Stress Absorbing Layer,U416.2
  7. A Research on the Seismic Response Behavior of the Xigeda Strata in Xichang,TU435
  8. Research of Dynamic Reactive Power Compensation Circuit Based on PWM-control,TM714.3
  9. Finite Element Analysis on the Capabilities of Reinforced Concrete Frame Column to Resist Lateral Impact Loading,TU375.4
  10. Study on the Dynamic Inverse-Analysis of Flexible Pavement Layer Modulus,U416.2
  11. Three Demention Finite Element Static and Dynamic Analysis for Reservoir Intake Tower-Base Structure,TU435
  12. Analysis on High Rock Slope Stability and Supporting Structure System with FEM,TU457
  13. Research on Dynamic Characteristics of Rolling Main Drive System by Taking into Account of the Rolling Mill Gear Meshing Stiffness,TG333
  14. Dynamic Response Research of Structures under Blasting Vibration and Disaster Control,TU311.3
  15. Simple Harmonic Excitation Numerical Analysis and Experimental Study of Space Bidirectional Beam String Structure,TU399
  16. Research on Large-Scale Shaking Table Physical Simulationexperiment of Steep-Dipping Stratified Rock Slope,TU458
  17. Large Scale Shaking Table Test Study on Seismic Response of Combinational Rock Slopes,TU457
  18. VSC-HVDC offshore wind farm grid applied research,TM614
  19. Design Theory and Method Research on Structure to Risist Progressive Collapse,TU375.4
  20. Dynamic Response of Underground Structures Subjected to Earthquakes under the Structure,TU352.11

CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Wind turbines
© 2012 www.DissertationTopic.Net  Mobile