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Model Test of a TLP Type of Floating Offshore Wind Turbine, Part II
Dam, Pham Thanh,Seo, Byoung-Cheon,Kim, Jae-Hun,Shin, Jae-Wan,Shin, Hyunkyoung 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
A large number of offshore wind turbines with fixed foundations have been installed in water depths up to 30 meters supporting 3-5MW wind turbines. Some floating platform concepts of offshore wind turbines were designed to be suitable for deployment in water depths greater than 60 meters. However the optimal design of this system in water depth 50 meters remains unknown. In this paper, a 5-MW wind turbine located on a TLP type platform was suggested for installation in this water depth. It is moored by a taut mooring line. For controlling the wind turbine always be operated at the upwind direction, one yaw controlling was attached at the tower. To study motion characteristics of this platform, a model was built with a 1/128 scale ratio. The model test was carried out in various conditions, including waves, winds and rotating rotor effect in the Ocean Engineering Wide Tank of the University Of Ulsan (UOU). The characteristic motions of the TLP platform were captured and the effective RAOs were obtained.
A Numerical Study on the Dynamic Responses of New Platforms of Floating Offshore Wind Turbine.
Pham Thanh Dam,Kwang Jin Jung,Byoung Choel Kim,Hyunkyoung Shin 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5
Recently, concepts of floating offshore wind turbines (FOWT) have been designed because of the vast potential wind resource. There are three spar buoy platforms suggested to support a 5-MW wind turbine in 320m water depth based on OC3-Hywind. By changing the shape but keeping the same displacement and mass of the OC3-Hywind, 3 kinds of platform have different hydrodynamic and hydrostatic loads. FAST code was employed to model the 5-MW wind turbine, rotor nacelle assembly, tower, controller and aerodynamic loads. Three floating platforms and their mooring systems were modeled by in-house codes of University of Ulsan (UOU). Using FAST code for coupling Aero-Hydro-servo-elastic, three new models were analyzed. This paper presents the effects of coupling the 5MW wind turbine with each of 3 platforms in wind and wave.
Pham, Thanh Dam,Shin, Hyunkyoung The Society of Naval Architects of Korea 2019 International Journal of Naval Architecture and Oc Vol.11 No.2
This paper describes a model test and numerical simulation of a 750-kW-semi-submersible platform wind turbine under several wind and wave conditions for validation of the numerical simulation model. The semi-submersible platform was designed to support the 750-kW-wind turbine class and operate at a water depth of 50 m. The model tests were performed to estimate the performance characteristics of the wind turbine system in the wide tank of the University of Ulsan. Motions and loads of the wind turbine system under the wind and wave conditions were measured and analyzed. The NREL-FAST code was used to simulate the wind turbine system, and the results were compared with those of the test model. The results demonstrate that the numerical simulation captures noticeably the fully coupled floating wind turbine dynamic responses. Also, the model shows a good stability and small responses during waves, wind, and operation of the 750-kW-floating offshore wind turbine.