Conceptual design of a floating support structure for an offshore vertical axis wind turbine: the lessons learnt
Conceptual design of a floating support structure for an offshore vertical axis wind turbine: the lessons learnt
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DOI：
10.1080/17445302.2012.698896
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发表时间：
2014-01
影响因子：
2.1
通讯作者：
M. Collu;F. Brennan;M. Patel
中科院分区：
文献类型：
--
作者：
M. Collu;F. Brennan;M. Patel
海上风力发电机的浮式支撑结构设计是一个相对较新的领域。相比之下，自20世纪50年代中期以来，海上油气行业一直在开发技术。然而，海上风电行业显著而微妙的不同要求需要新的方法。能源技术研究所（ETI）资助了一个名为NOVA（新型垂直轴风力涡轮机）的项目，该项目研究了10-20兆瓦功率范围内的大型海上垂直轴风力涡轮机的可行性。为NOVA项目开发案例研究需要开发一种方法，以根据系统动态选择最佳配置。对设计空间进行了调查，使用称为TOPSIS的多标准决策（MCDM）方法对可能的选择进行排名。最佳“类”或设计解决方案（基于水平面面积稳定性）已被选中进行更详细的分析。考虑了两种配置：驳船和半潜式。本文给出了优化和比较这两个选项的迭代，并考虑了它们的动态和成本。驳船概念演变为“三重甜甜圈-宫川”概念，由一个环形圆柱形的内部（控制阻尼）和外部（控制增加质量）底部平板组成。对半潜式平台进行了优化，以在动态性能和所需材料数量之间取得最佳平衡。主要结论是，驱动要求是对波浪作用的可接受响应，而不是漂浮能力或抵消风力涡轮机倾覆时刻的能力。给出了一个简单的成本比较。
The design of floating support structures for wind turbines located offshore is a relatively new field. In contrast, the offshore oil and gas industry has been developing its technologies since the mid 1950s. However, the significantly and subtly different requirements of the offshore wind industry call for new methodologies. An Energy Technologies Institute (ETI) funded project called NOVA (for Novel Vertical Axis wind turbine) examined the feasibility of a large offshore vertical axis wind turbine in the 10–20 MW power range. The development of a case study for the NOVA project required a methodology to be developed to select the best configuration, based on the system dynamics. The design space has been investigated, ranking the possible options using a multi-criteria decision making (MCDM) method called TOPSIS. The best ‘class’ or design solution (based on water plane area stability) has been selected for a more detailed analysis. Two configurations are considered: a barge and a semi-submersible. The iterations to optimise and compare these two options are presented here, taking their dynamics and costs into account. The barge concept evolved to the ‘triple doughnut-Miyagawa’ concept, consisting of an annular cylindrical shape with an inner (to control the damping) and outer (to control added mass) bottom flat plates. The semi-submersible was optimised to obtain the best trade-off between dynamic behaviour and amount of material needed. The main conclusion is that the driving requirement is an acceptable response to wave action, not the ability to float or the ability to counteract the wind turbine overturning moment. A simple cost comparison is presented.