The Dynamics of a Novel Wave Energy Converter

自19世纪末煤炭价格危机以来，海浪一直是一种经常被研究但尚未实现的电能来源。据估计，这种能源可以满足世界十分之一到四分之一的人口。美国的电能需求。20世纪后期的最新发展激发了新一代波浪能转换器（WECs）。当海浪与这些装置相互作用时，它们会在WEC的两个运动部分之间产生运动。然后利用这种相对运动来发电。在WEC设计中需要优化的特征之一是相对运动的振幅，这反过来又将使所收集的能量最大化。本文的目的是构建、建模、分析、演示和改进一种新型的WECs励磁系统。该系统基于WEC运动期间的水的摄入和释放。进气和释放的时间由WEC的运动控制，具有开环控制的特点，并且有可能增加WEC产生的电力。WEC的模型可以看作是一个参数激励系统或混合系统。考虑随机海浪环境和流固耦合的影响是非常重要的。为此，一个由来自加州大学伯克利分校、伊利诺伊大学厄巴纳-香槟分校和美国海军学院的分析师、机械师和实验人员组成的团队将进行拟议的研究。该研究的特点是构建和测试一个比例原型，并有几个教育方面。希望通过对新型励磁系统的研究，能找到更高效、更经济的海浪能采集方法。

Dating to a crisis in the price of coal in the late 19th century, ocean waves have beenan oft-examined but unrealized source of electrical energy. It is a source of energy estimated to be able to satisfy a tenth to a quarter of the World?s electrical energy needs. More recent developments in the late 20th century have inspired a new generation of wave energy converters (WECs). When ocean waves interact with these devices they produce a motion between two moving parts of the WEC. This relative motion is then use to generate electricity. One of the features to optimize in the design of a WEC is the amplitude of the relative motion which in turn will maximize the harvested energy.The purpose of the proposed work is to construct, model, analyze, demonstrate, andimprove upon a novel excitation system for WECs. This system is based on the intake and release of water during the motion of the WEC. The timing of the intake and release is governed by the motion of the WEC features an open loop control, and has the potential to increase the electrical power generated by the WEC. The model for the WEC can be considered as a parametrically excited system or a hybrid system. Incorporating the effects of the stochastic ocean wave environment and the fluid-structure interaction are non-trivial. To this end, a team of featuring analysts, mechanicians, and experimentalists from the University of California at Berkeley, the University of Illinois at Urbana-Champaign, and the United States Naval Academy will conduct the proposed research. The research features construction and testing of a scaled prototype and has several educational aspects. It is hoped that the research on the novel excitation system will result in more efficient and cost-effective methods to harvest ocean wave energy.