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A Seamless Integration of Communications, Networks, Distributed and Hierarchical Control for Reliable Conversion of Ocean Wave Energy to Electricity

通信、网络、分布式和分级控制的无缝集成，实现海浪能可靠地转换为电能

基本信息

批准号：
1711859
负责人：
Mario Magana
金额：
$ 41万
依托单位：
Oregon State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-09-01 至 2021-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1711859&HistoricalAwards=false
关键词：
Seamless Integration Communications Networks Distributed

项目摘要

Solar radiation produces wind which, when it blows over the ocean surface, generates waves. These waves can travel very long distances with little energy loss. Most importantly, these waves are a source of clean energy readily available for harvesting using appropriate wave energy converters such as oscillating water column converters. Currently, most ocean wave energy conversion projects deal with design, development and testing of single wave energy converters. This research project proposes a vision of a large-scale wave energy conversion park which is capable of generating the electrical power of a large power generating plant. To achieve this goal, a wave energy converter park can be designed as a large intelligent system with intra wave energy converters communication, supervisory global control, and active local control to maximize clean electrical energy generation. The main benefit from the application of the ideas herein proposed is a significant increase in year-round electricity productivity. In fact, it can be shown that hydrodynamic active control as proposed in this research project could increase annual energy conversion productivity by a factor in the range of 1.5 to 2.8.Most wave energy converters absorb energy by means of an oscillatory motion that makes waves which constructively and/or destructively interfere with the incoming waves. A wave energy converter with fixed geometry and mass possesses a natural period, and it is known that the energy absorption from the sea is largest when the natural period agrees with the wave period, namely at resonance. When this is not the case, a passive wave energy converter has a natural response that is not optimal. This means that there is a possible motion other than the natural one that would absorb more energy. Specifically, in terms of sinusoidal waves and oscillations, there exist optimal values of phase and amplitude of the natural response which could be matched by the wave energy converter using optimal control. Hence, an optimal active control of the primary conversion system can be devised so that the electricity production can be maximized. In essence, what active control can do is to use the machinery in a purposeful way to change the dynamical resistance and mechanical reactance felt by the waves when they act upon the wave energy converter. Therefore, the proposed research will develop new active control techniques which will modify the motion of a wave energy converter closer to one or both of these parameters using both local and global wave climate information gathered by a network of sensors deployed on the wave energy park and other sources such as National Data Buoy Center.

太阳辐射产生风，当风吹过海洋表面时，就会产生波浪。这些波可以传播很长的距离，几乎没有能量损失。最重要的是，这些波浪是易于使用适当的波浪能转换器（例如振荡水柱转换器）来收获的清洁能量的来源。目前，大多数海洋波浪能转换项目涉及单个波浪能转换器的设计、开发和测试。本研究项目提出了一个大规模的波浪能转换公园的愿景，它能够产生一个大型发电厂的电力。为了实现这一目标，波浪能转换器园区可以被设计为具有波浪能转换器内通信、监督全局控制和主动局部控制的大型智能系统，以最大化清洁电能的产生。应用本文提出的想法的主要好处是全年电力生产率的显着增加。实际上，可以表明，本研究项目中提出的流体动力主动控制可以将年能量转换生产率提高1.5至2.8倍。大多数波能转换器通过振荡运动吸收能量，该振荡运动使波浪与入射波相长和/或相消干涉。具有固定几何形状和质量的波浪能量转换器具有固有周期，并且已知当固有周期与波浪周期一致时，即在共振时，来自海洋的能量吸收最大。当不是这种情况时，无源波能转换器具有不是最佳的自然响应。这意味着除了自然运动之外，还有一种可能的运动会吸收更多的能量。具体地，在正弦波和振荡方面，存在固有响应的相位和振幅的最优值，其可以由波能转换器使用最优控制来匹配。因此，可以设计初级转换系统的最佳主动控制，使得可以最大化电力生产。从本质上讲，主动控制可以做的是以有目的的方式使用机械来改变波浪作用于波能转换器时波浪所感受到的动态阻力和机械电抗。因此，拟议的研究将开发新的主动控制技术，该技术将修改波浪能转换器的运动，使其更接近这些参数中的一个或两个，使用由部署在波浪能公园和其他来源（如国家数据浮标中心）上的传感器网络收集的本地和全球波浪气候信息。