U.S.-Ireland R&D Partnership: Control Co-Design of Heterogeneous Arrays of Wave Energy Converters

美国-爱尔兰 R

基本信息

批准号：
2048413
负责人：
Ossama Abdelkhalik
金额：
$ 25.84万
依托单位：
Iowa State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-01-01 至 2024-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2048413&HistoricalAwards=false
关键词：
U.S.Ireland R&amp Partnership Control

项目摘要

This project promotes the progress of science and advances national prosperity, by studying novel approaches to renewable ocean wave energy harvesting. Oceans are colossal reservoirs of energy. Ocean wave energy converters capture wave power and convert it to electric power. Despite its potential, this technology is not yet mature, and the current cost of wave power is high compared to other renewable energy sources. Wave energy converters are usually deployed in the form of arrays of identical units. These units are controlled to increase the efficiency of the array in harvesting power at a lower cost. However, there is a lack of appropriate science and technology to conceptualize and design for the deep interdependencies among the several units in the array and the ocean. To address these challenges, this project establishes collaboration among researchers in the United States, Republic of Ireland, and Northern Ireland that aims to generate innovation and enable wave energy converters to produce power at a lower cost. The project investigates the wave energy converter arrays from a new perspective in which the array of units is designed and controlled to change the wave field in a favorable way. The results from this research will benefit the national economy and society. This project also links education and research, providing international experience for undergraduate students, and positively impacts society via an outreach program that aims to raise the knowledge level among high school students. In arrays of wave energy converters, automatic control is one of the most pressing problems and least studied because of dynamic modelling difficulties. Another challenge is the need for reactive power in the power take-off units; that is, take-off units should put power into the ocean at times such that more power can be harvested at other times. This award aims to connect efforts to address these challenges analytically, numerically, and experimentally on a fundamental level. A new modeling approach will be investigated that assumes the surface pressure as input to the model, instead of the classically used wave elevation. The impact of simultaneously optimizing both geometry and control, among different array units, on its collective performance will be analyzed. Nonlinear hydrodynamic forces will be leveraged for improved performance of this heterogeneous array. To achieve these objectives, three interlaced approaches will be developed: optimal control analysis, numerical control co-design optimization, and experimentation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目通过研究可再生海浪能量收获的新方法来促进科学的进步和进步国家繁荣。海洋是巨大的能量储藏。 Ocean Wave Energy转换器捕获波浪，并将其转换为电力。尽管具有潜力，但这项技术尚未成熟，与其他可再生能源相比，当前的波力成本也很高。波能转换器通常以相同单元阵列的形式部署。这些单元受到控制，以提高阵列在收获功率方面的效率，价格较低。但是，缺乏适当的科学和技术来概念化和设计阵列和海洋几个单元之间的深层相互依赖性。为了应对这些挑战，该项目在美国，爱尔兰共和国和北爱尔兰的研究人员之间建立了合作，旨在产生创新并使波浪能转换器以较低的成本生产电力。该项目从新的角度研究了波能转换器阵列，在该角度上，设计和控制了单元阵列以以有利的方式改变波浪场。这项研究的结果将使国民经济和社会受益。该项目还将教育和研究联系起来，为本科生提供国际经验，并通过宣传计划对社会产生积极影响，该计划旨在提高高中生的知识水平。在波能转换器的阵列中，自动控制是最紧迫的问题之一，并且由于动态建模困难而研究最少。另一个挑战是在起电单元中需要反应力。也就是说，起飞单位有时应该将电力投入到海洋中，以便在其他时候可以收获更多的电力。该奖项旨在将分析，数值和实验上的这些挑战的努力联系起来。将研究一种新的建模方法，该方法将表面压力作为模型输入，而不是经典的波浪高度。将分析在不同阵列单元之间同时优化几何和控制的影响，将分析其集体性能。非线性流体动力将被利用，以提高此异质阵列的性能。为了实现这些目标，将开发三种交错的方法：最佳控制分析，数值控制共同设计和实验。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛的影响来通过评估来支持的。