The current state of offshore wind energy technology development

Sun, Xiaojing; Huang, Diangui; Wu, Guoqing

doi:10.1016/j.energy.2012.02.054

Cited by 323 publications

(166 citation statements)

References 38 publications

Supporting

Mentioning

158

Contrasting

Unclassified

Order By: Relevance

“…En estos momentos ya se puede considerar como consolidada a nivel industrial la energía eólica offshore (fuera-costa) en aguas poco profundas, con dispositivos apoyados en el fondo marino, denominados de 1ª generación (Sclavounos, 2008) (Möller et al 2012) (Sun et al 2012). Además ya existen dispositivos flotantes probados, que operan en aguas profundas, denominados de 2ª generación.…”

Section: Introductionunclassified

Modelado Dinámico y Control de un Dispositivo Sumergido Provisto de Actuadores Hidrostáticos

Portilla¹,

Piñeiro²,

Sánchez³

et al. 2017

Rev. iberoam. autom. inform. ind.

View full text Add to dashboard Cite

ResumenLas corrientes marinas, fuente de energía renovable más predecible, localizan la mayor parte de su energía en altas profundidades. Para aprovechar esta energía se están desarrollando dispositivos flotantes, de tipo fondeado. La viabilidad económica de estos dispositivos requiere el abaratamiento de costos. El desarrollo de sistemas de control que permitan el cambio automático de orientación y profundidad del generador, con el fin de abaratar las maniobras de mantenimiento y aprovechar el recurso energético de forma óptima, resulta imprescindible. En este trabajo se presenta un actuador hidrostático y se realiza un modelo dinámico simple para control, de un dispositivo de dos grados de libertad, con un sistema de control de lastre. A partir de este modelo se ha desarrollado una ley de control multivariable, basada en una matriz de desacoplamiento no lineal y en la compensación de los términos de fricción y compresibilidad. Finalmente, la bondad del controlador ha sido validada mediante simulación. Palabras Clave:Energías Renovables, Sistemas Marinos, Control Multivariable, Sistemas variables con el tiempo, Integración OrcaFlex-Matlab. Dynamic Modelling and Control of a Submerged Device with Hydrostatic Actuators AbstractMarine currents represent the most predictable source of renewable energy. The greatest percentage of its energy is located in areas with high depths. In order to be able to operate at these depths, new devices are being developed, floating anchoring type. The economically viable harnessing of the tidal energy with these devices requires the development of control systems. These systems must allow the automatic change of orientation and depth of the generator to harness the energy in an optimal way. In this paper, a type of hydrostatic actuator based on the controlled handling of water ballast is selected. Next, a dynamic model, provided with two degrees of freedom, is presented for the control of a submerged device for the exploitation of tidal currents. From this model, a multivariate control law has been developed, based on a non-linear decoupling matrix and on the compensation of the terms of friction and compressibility. Finally, the controller's goodness has been validated by the development of several simulations.

show abstract

Section: Introductionunclassified

Modelado Dinámico y Control de un Dispositivo Sumergido Provisto de Actuadores Hidrostáticos

Portilla¹,

Piñeiro²,

Sánchez³

et al. 2017

Rev. iberoam. autom. inform. ind.

View full text Add to dashboard Cite

show abstract

“…Like conventional energy systems, long term policies are a fundamental requirement for sound renewable energy investments that integrate well with existing infrastructure and regulations [11][12][13][14][15][16], and as wind power capacity is rapidly expanding it is fast approaching technical and institutional impediments [10,17].…”

Section: Military Concernsmentioning

confidence: 99%

Options to mitigate utility-scale wind turbine impacts on defence capability, air supremacy, and missile detection

2014

View full text Add to dashboard Cite

There is increasing interest in, and concern over, the impact that the growing number of utility-scale wind farms are having on air supremacy and early warning missile detection in relation to radar clutter and shadow, seismic noise, and flight obstructions.This work identifies US defence industry concerns in relation to wind developments and conducts US industry interviews with representatives from the field of radar, the wind development industry, and government defence agencies. The results of the interviews provide detailed insights defining radar and military concerns raised around wind turbines and reveal that the US Department of Defense (DOD) have invested US $3 million to date on developing a suite of solutions to these concerns. This research discusses selected solutions available for the US DOD approval and alternative options that may be introduced to mitigate the impact of utility-scale wind turbines on defence and security. Implementing solutions will require greater cooperation between government agencies and wind developers, dedicated funding, a common research plan, and streamlined processes.

show abstract

“…In Denmark, as much as 20% of the electric power is provided from wind energy annually, and the percentage is towards reaching 50% in the coming decades [1]. Tens and even hundreds of offshore wind turbines can form a large wind farm in the huge available deep water area, and this also makes it possible to improve the power generation efficiency [2].…”

Section: Introductionmentioning

confidence: 99%

Structural Control for an Offshore Wind Turbine with a Tuned Mass Damper in Floating Platform

Yang¹,

He²,

Hu³

2018

dtcse

View full text Add to dashboard Cite

Abstract. In recent years, offshore wind energy has become an attractive option due to the increased demand for the renewable energy. A method incorporating a tuned mass damper (TMD) in offshore wind turbine platform is proposed to demonstrate the improvement on structural dynamic performance in this investigation. The Lagrange's equations are applied to establish a limited degree-of-freedom (DOF) mathematical model for the barge-type offshore wind turbine. Genetic algorithm (GA) is then employed to find the globally optimum TMD design parameters. Numerical simulations based on FAST have been carried out to evaluate the effect of the passive control system. A changeable mass for the floating wind turbine will be brought for installing a heavy tuned mass damper in the platform. In this case, partial ballast is substituted for the equal mass of the tuned mass damper, and the vibration mitigation is simulated in five typical load cases. Results show that the passive control approaches can improve the dynamic responses of the barge-type wind turbine by placing a tuned mass damper in floating platform. Through replacing partial ballast with the equal mass of the tuned mass damper, a significant reduction of dynamic responses is also observed in simulation results for the barge-type floating structure.

show abstract

The current state of offshore wind energy technology development

Cited by 323 publications

References 38 publications

Modelado Dinámico y Control de un Dispositivo Sumergido Provisto de Actuadores Hidrostáticos

Modelado Dinámico y Control de un Dispositivo Sumergido Provisto de Actuadores Hidrostáticos

Options to mitigate utility-scale wind turbine impacts on defence capability, air supremacy, and missile detection

Structural Control for an Offshore Wind Turbine with a Tuned Mass Damper in Floating Platform

Contact Info

Product

Resources

About