Concept Design Verification of a Semi-submersible Floating Wind Turbine Using Coupled Simulations

Huijs, Fons; Bruijn, Rogier de; Savenije, Feike

doi:10.1016/j.egypro.2014.07.210

Cited by 50 publications

(23 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A frequency domain analysis shows that specific wave periods of regular waves and the direction of incident waves have significant effects on the excitation forces and motion of the structure [9]. The analysis of the global motion response for a semi-submersible floating wind turbine has previously been examined [10]. The study concluded that an uncoupled frequency domain analysis was sufficient to assess the global motion response as long as the aerodynamic forces were taken into account.…”

Section: Introductionmentioning

confidence: 94%

Influence of Model Simplifications Excitation Force in Surge for a Floating Foundation for Offshore Wind Turbines

2015

View full text Add to dashboard Cite

Abstract:As offshore wind turbines move towards deeper and more distant sites, the concept of floating foundations is a potential technically and economically attractive alternative to the traditional fixed foundations. Unlike the well-studied monopile, the geometry of a floating foundation is complex and, thereby, increases the difficulty in wave force determination due to limitations of the commonly used simplified methods. This paper deals with a physical model test of the hydrodynamic excitation force in surge on a fixed three-columned structure intended as a floating foundation for offshore wind turbines. The experiments were conducted in a wave basin at Aalborg University. The test results are compared with a Boundary Element Method code based on linear diffraction theory for different wave force regimes defined by the column diameter, wave heights and lengths. Furthermore, the study investigates the influence of incident wave direction and stabilizing heave-plates. The structure can be divided into primary, secondary and tertiary parts, defined by the columns, heave-plates and braces to determine the excitation force in surge. The test results are in good agreement with the numerical computation for the primary parts only, which leads to simplified determination of peak frequencies and corresponding dominant force regime.

show abstract

Section: Introductionmentioning

confidence: 94%

Influence of Model Simplifications Excitation Force in Surge for a Floating Foundation for Offshore Wind Turbines

2015

View full text Add to dashboard Cite

show abstract

“…The majority of the power supply is produced through coal and thermal based power plants, which accounts for a considerable part of the pollution. Hence there were alternatives like the wind energy, solar energy, etc.., which are renewable and pollution free [2]. But the cost of initial investment to harvest these renewable sources of energy is very high.…”

Section: Problem Identificationmentioning

confidence: 99%

Development of Flapping Panel Vertical Axis Wind Turbine

Pandyaraj*,

Ravinthiran

2019

IJITEE

View full text Add to dashboard Cite

In a developing nation like India, electricity has become one of the most important basic needs nowadays. Coal and gasoline based power generation capacity stands at 71% in India, which contributes to a considerable part of air pollution. There are various renewable energy sources which are pollution free, one among them is the wind energy. So the main objective of the project is to facilitate pollution free power generation for individual purpose. In order to understand the problem and working, a flapping panel vertical axis wind turbine was designed. The main advantage of using a vertical axis wind turbine is that it need not pointed towards the wind and also vertical axis wind turbine is more comfortable to erect for domestic purposes. The flapping panel wind turbine is designed using solidworks software and analysed using Ansys Fluent. By making use of the wind, the flapping panels attached to the shaft rotate and the rotor is connected to the permanent magnet electricity generator (PMG). The PMG converts the Kinetic energy of the rotor shaft into electrical energy. The PMG we have used has the capacity of producing maximum power at 1200rpm. On calculating theoretically, the power output is found to be 8W for the rotation of 76.39 rpm and for 1200rpm the power output is calculated to be 125W. The entire wind turbine setup is compact in size and can be easily mounted and erected.

show abstract

“…Firstly, its static and dynamic stability provides sufficiently low pitch performance enabling the use of commercial offshore wind turbines; second, its design and fabrication methodology allow for onshore assembly of the complete system including the wind turbine. Then, several floating platform concepts similar to the OC4 semi-submersible floating system were proposed, such as WindFloat by Roddier et al [44], Tri-Floater by Huijs et al [45], and the fish-farming cage type by Zheng et al [46].…”

Section: Introductionmentioning

confidence: 99%

Proposal of a Novel Semi-Submersible Floating Wind Turbine Platform Composed of Inclined Columns and Multi-Segmented Mooring Lines

Liu

Zhou

et al. 2019

Energies

View full text Add to dashboard Cite

The semi-submersible floating offshore wind turbine has been studied in detail due to its good stability. However, the occurrence of typhoons are very frequent in China’s offshore area, putting forward a higher requirement for the stability of the floating wind turbine system. By changing the connection mode of the mooring line as well as the structural form of the platform based on the original OC4 model, two groups of models were examined by an in-house developed code named as the Analysis Tool of Floating Wind Turbine (AFWT). The influence of the arrangement of the mooring lines and the inclination angle of the upper columns on the motion response were clarified. It was found that the surge motion of the platform would be obviously decreased by decreasing the length of the upper segments of the mooring lines, while the heave motion of the platform would be significantly decreased as increasing the inclined angle of the columns. Therefore, a new model integrating the optimized multi-segmented mooring lines and the optimized inclined columns was proposed. The examinations showed that compared with the response motions of the original OC4 semi-submersible model, the proposed model could reduce both the surge and heave motions of the platform effectively.

show abstract

Concept Design Verification of a Semi-submersible Floating Wind Turbine Using Coupled Simulations

Cited by 50 publications

References 5 publications

Influence of Model Simplifications Excitation Force in Surge for a Floating Foundation for Offshore Wind Turbines

Influence of Model Simplifications Excitation Force in Surge for a Floating Foundation for Offshore Wind Turbines

Development of Flapping Panel Vertical Axis Wind Turbine

Proposal of a Novel Semi-Submersible Floating Wind Turbine Platform Composed of Inclined Columns and Multi-Segmented Mooring Lines

Contact Info

Product

Resources

About