Electric Energy Maximization for Oscillating Water Column Wave Energy Systems Using a Receding-Horizon Pseudospectral Control Approach

IF 8.6 1区工程技术 Q1 ENERGY & FUELS

IEEE Transactions on Sustainable Energy Pub Date : 2024-08-14 DOI:10.1109/TSTE.2024.3443228

Marco Rosati;John V. Ringwood

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引用次数: 0

Abstract

Among the various wave energy technologies, oscillating water columns (OWCs) have shown some of the greatest promise, due to their simplicity of operation and possibility for shore mounting, with consequent ease of access and integration with other infrastructure, such as breakwaters. To minimize the levelized cost of energy, OWC energy capture must be maximized. To date, most focus has been on maximizing air turbine efficiency, while neglecting other aspects of the system. This paper presents an integrated wave-to-wire optimal control approach, considering the OWC hydrodynamics, turbine characteristics, and generator. The approach is based on a receding-horizon pseudospectral formulation, which transcribes the continuous-time optimal control problem into a finite-dimensional nonlinear program. The results show optimal exploitation of the hydrodynamic, aerodynamic, and electric subsystem efficiency characteristics, surpassing the electric energy production available through a specific focus on turbine efficiency.

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利用后退-地平线伪谱控制方法实现振荡水柱波浪能系统的电能最大化

在各种波浪能技术中，振荡水柱（OWCs）的前景最为广阔，因为它操作简单，可以安装在岸上，从而便于使用和与其他基础设施（如防波堤）集成。为了最大限度地降低平准化能源成本，必须最大限度地捕获 OWC 能源。迄今为止，大部分关注点都集中在空气涡轮机效率的最大化上，而忽略了系统的其他方面。本文提出了一种综合的 "波-线 "优化控制方法，考虑了 OWC 流体力学、涡轮机特性和发电机。该方法基于后退地平线伪谱公式，将连续时间最优控制问题转换为有限维非线性程序。结果表明，通过对涡轮机效率的特别关注，水动力、空气动力和电力子系统效率特性得到了优化利用，从而超过了可获得的电能产量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Sustainable Energy ENERGY & FUELS-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

21.40

自引率

5.70%

发文量

215

审稿时长

5 months

期刊介绍： The IEEE Transactions on Sustainable Energy serves as a pivotal platform for sharing groundbreaking research findings on sustainable energy systems, with a focus on their seamless integration into power transmission and/or distribution grids. The journal showcases original research spanning the design, implementation, grid-integration, and control of sustainable energy technologies and systems. Additionally, the Transactions warmly welcomes manuscripts addressing the design, implementation, and evaluation of power systems influenced by sustainable energy systems and devices.