Wave prediction and fuzzy logic control of wave energy converters in irregular waves
Wave prediction and fuzzy logic control of wave energy converters in irregular waves
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DOI：
10.1109/med.2008.4602036
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发表时间：
2008-06
期刊：
影响因子：
--
通讯作者：
Marco P. Schoen;J. Hals;T. Moan
中科院分区：
文献类型：
--
作者：
Marco P. Schoen;J. Hals;T. Moan
本文简要比较了现有的和提出的不同的波浪预报模型，并将其用于不规则波中的波能转换器(WEC)的控制。控制动作的目标是增加能量转换。基于各个滤波器权重对预测的贡献对预测模型进行比较，以努力降低滤波器阶。该控制器基于调节WEC动力输出器(PTO)的短期刚度和阻尼。控制动作是基于模糊逻辑(FL)的设计，通过使用简单遗传算法(GA)为给定的海况和瞬时波浪确定的额定阻尼值和刚度值来支持控制动作。所选的WEC由一个球形浮标组成，并使用键合图技术进行建模。仿真结果表明，与无控制情况相比，该算法提高了WEC在不规则波中的能量转换效率。
This paper presents a short comparison of different existing and proposed wave prediction models, which in turn are used to control wave energy converters (WEC) in irregular waves. The objective of the control action is to increase the energy conversion. The prediction models are compared based on the contribution to the prediction of the individual filter weights, in an effort to reduce the filter order. The controller is based on adjusting the short term stiffness and damping of the power take off (PTO) of the WEC. The control action, which is a fuzzy logic (FL) based design, is supported by utilizing nominal damping and stiffness values determined for the given sea state and instantaneous wave using a simple genetic algorithm (GA). The WEC chosen is comprised of a spherical buoy and is modeled using the bond-graph technique. The simulation carried out indicates the proposed algorithm increases the energy conversion of WEC in irregular waves compared to the no control case.