The development is presented of two low weight, motion resistant stiff floating wind turbine concepts for deployment in water depths ranging from 30 to several hundred meters in seastates with wave heights up to 30 meters supporting 3-5 MW onshore wind turbines. The floating wind turbines may be fully assembled at a coastal facility in their upright position prior to being towed to the offshore...

The offshore floating wind turbine system is a key piece of equipment for harvesting energy from the ocean field. However, structural safety analysis and design such largely require suitable platform to accurately obtain dynamic characteristics. In present study, an attempt was made investigate responses proposed 5-MW WindStar multi-column tension-leg-platform (TLP) under different environment ...

1. Abstract Tension Leg Platforms (TLPs), if designed properly, are the best oil and natural production facilities in the world. They are utilized globally by prominent oil companies such as Hess, Conoco Philips, and Shell. We have designed a prototype TLP with two novel features. First, our prototype structure, dubbed the Governor’s School of Engineering and Technology (GSET) TLP, is taller th...

The wave drift forces on tension leg platforms (TLP) are contributed by secondorder potential and viscous wave load effects, the fluctuations in wave surface elevation and the influence of platform displaced position on the wave excitation. These forces are expressed in terms of in phase and out of phase drift forces. In this study, computationally efficient time domain and frequency domain bas...

A disturbance accommodating controller (DAC) to reject wind speed perturbations is applied on a 5MW wind turbine mounted on a tension leg platform (TLP). Multi-blade coordinate (MBC) transformation is used to address the periodicity of the floating wind turbine system. A method to apply DAC after applying MBC transformation is developed and several implementation options are presented. Simulati...

An assessment is made of the stress distribution and hydrodynamic response preliminary structural design tension leg platform a 10 MW wind turbine. The supporting turbine modelled analysed by finite element method. determined in still water with at above-rated conditions, estimated time domain. results domain analysis show reasonable agreement between present available data. To check stiffener ...

A controller design methodology for offshore structures is investigated. Because stochastic simulation is used for evaluation of the system’s performance in the design stage, nonlinear characteristics of the structural response and excitation can be explicitly incorporated into the assumed system model. Model parameters whose values are uncertain are probabilistically described. In this context...

NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. Neither ...