Status, plans and technologies for offshore wind turbines in Europe and North America

Breton, Simon-Philippe; Moe, Geir

doi:10.1016/j.renene.2008.05.040

Cited by 347 publications

(170 citation statements)

References 5 publications

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“…As compared to solar energy wind energy are available majorly in the coastline. However, present research shows offshore wind technologies have been put into operation primarily in shallow waters using fixed-bottom foundations [1]. Previous investigations have shown that offshore wind turbines may require floating structures in deep waters instead of fixed-bottom foundations which are economically limited to a maximum water depth of 60 m [2].…”

Section: Introductionmentioning

confidence: 84%

Computational Study of Flow over Cascade Arrangement of Bluff Bodies with Different Geometries

Kumar¹,

Sachendra²,

Singhal³

2017

Preprint

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---Most of the structures in flowing water are a challenge to their stability and sustainable with different flow conditions. Recent, renewable energy research and development covers ocean and river energy platform in which flow of water drag considered in various conversion devices towards the offshore and onshore establishment. Various energy platforms have been suggested for offshore development. However, the stability of these platforms in water is a serious concern. To study the water interaction over circular and square cross-section cascade system under the water has been carried out. Water flow around the pillars or column of the energy platform are analyzed through simulation software. Very low velocity 0.5 m/s has been considered to analyze the system. Total fifteen numbers of cascade pillars having circular and square cross-section area were considered. K-ε turbulence model is adopted to calculate the flow interaction to the column. A velocity, pressure, and energy fields are found around the column..

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Section: Introductionmentioning

confidence: 84%

Computational Study of Flow over Cascade Arrangement of Bluff Bodies with Different Geometries

Kumar¹,

Sachendra²,

Singhal³

2017

Preprint

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“…Apart from spatial parameters, a few other assumptions independent of location were included in the cost calculations, see table 1. 1,300,000 Average power coefficient [1] 0.4 Average turbine availability [1] 0.8 Average park efficiency [1] 0.9 Socio-economic discount rate, Danish government 6% Socio-economic lifetime [ …”

Section: Methodsmentioning

confidence: 99%

“…Development has further accelerated since the year 2003, when larger turbines became available, experience was gained with greater water depths and distances to shore, and the confidence of developers grew [1]. There seems to be a law of scale, which directs development to ever larger turbines located at greater distances to shore, at greater water depths and in larger parks [2].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of offshore wind resources by scale of development

Möller

Hong

Lonsing³

et al. 2012

Energy

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Offshore wind energy has developed rapidly in terms of turbine and project size, and currently undergoes a significant up-scaling to turbines and parks at greater distance to shore and deeper waters. Expectations to the positive effect of economies of scale on power production costs, however, have not materialized as yet. On the contrary, anticipated electricity generation costs have been on the increase for each increment of technology scale. Moreover, the cost reductions anticipated for progressing along a technological learning curve have are not apparent, and it seems that not all the additional costs can be explained by deeper water, higher distance to shore, bottlenecks in supply or higher raw material costs. The present paper addresses the scale of offshore wind parks for Denmark and invites to reconsider the technological and institutional choices made. Based on a continuous resourceeconomic model operating in a geographical information systems (GIS) environment, which describes resources, costs and area constraints in a spatially explicit way, the relation between project size, location, costs and ownership is analysed. Two scenarios are presented, which describe a state-of-the-art development as well as a sketch of smaller, locally owned parks that may have several economic advantages but require a greater planning and acceptance because of higher visual impact and area competition.

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“…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]. Therefore, the development of the offshore floating wind turbines is now appearing as an upcoming approach to deal with these propositions.…”

Section: Introductionmentioning

confidence: 99%

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

Yang¹,

He²,

Hu³

2018

dtcse

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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.

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Status, plans and technologies for offshore wind turbines in Europe and North America

Cited by 347 publications

References 5 publications

Computational Study of Flow over Cascade Arrangement of Bluff Bodies with Different Geometries

Computational Study of Flow over Cascade Arrangement of Bluff Bodies with Different Geometries

Evaluation of offshore wind resources by scale of development

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

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