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首页> 外文期刊>IEEE / ASME Transactions on Mechatronics >The Application of the Digital Controlled Hydraulic Cylinders Group in Pendulum Wave Energy
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The Application of the Digital Controlled Hydraulic Cylinders Group in Pendulum Wave Energy

机译:数字控制液压缸组在摆波能量中的应用

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摘要

Wave energy is one of the most important potential sustainable energy resources. To enhance the performance of the pendulum hydraulic wave energy converter (WEC) system in various wave conditions, this article proposes a digital controlled hydraulic cylinders group to replace the single traditional hydraulic cylinder in a hydraulic power take-off (PTO) system based on the concept of previous study. The cylinders group, whose structure is designed with high extendability, consists of several pairs of subsidiary cylinders. The extraction energy maximizing for pendulum WEC is theoretically analyzed in the frequency domain based on a linear wave assumption, which indicates demand for damping regulation. The proposed cylinders group is able to provide variable damping for the PTO system by changing its working area. So as to demonstrate the better performance of the proposed cylinders group compared with a single traditional hydraulic cylinder, a simulation in AMESim software and a fundamental semiphysical test have been carried out. Both results illustrated that the WEC was endowed with high performance by using cylinders group in various wave conditions. In addition, a transmission efficiency test indicated that the application of the cylinders group did not cause much more extra energy loss during the transmission process compared with the single traditional cylinder. The further study of cylinders group with more subsidiary cylinders and the control strategy remains to be conducted.
机译:波能量是最重要的潜在可持续能源资源之一。为了提高各种波动条件下摆动液压波能量转换器(WEC)系统的性能,本文提出了一种数字控制的液压缸组,以基于液压动力耗尽(PTO)系统中的单个传统液压缸。以前的研究的概念。该结构采用高可延期性设计的气缸组由几对辅助汽缸组成。基于线性波假设理论上,在频域中理论地分析了摆锤WEC的提取能量,这表明对阻尼调节的需求。所提出的汽缸组能够通过改变其工作区域来为PTO系统提供可变阻尼。以便展示所提出的汽缸组的更好性能与单个传统的液压缸相比,AMESIM软件的模拟和基本的半学科测试已经进行。这两种结果都表明,通过在各种波条件下使用气缸组赋予WEC高性能。此外,传输效率测试表明,与单个传统气缸相比,汽缸组的应用在传动过程中没有造成更多额外的能量损失。进一步研究具有更多辅助汽缸和控制策略的汽缸组仍有待进行。

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