Design and analysis of a new wave energy converter based on a point absorber and a hydraulic system harvesting energy from waves near the shore in calm seas

Barbarelli, Silvio; Amelio, Mario; Castiglione, Teresa; Florio, Gaetano; Scornaienchi, Nino Michele

doi:10.1002/er.5799

Cited by 9 publications

(4 citation statements)

References 24 publications

(58 reference statements)

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“…The WECM absorbs wave energy and converts it into heave motion (mechanical energy) for the PSU's input energy, then the PSU converts its heave motion into rotational motion to generate electricity [8,9], as shown in 0. The PSU converts wave energy into electrical energy through its unique mechanical structure and transmission mechanism.…”

Section: Working Principlementioning

confidence: 99%

Design and Fluid Analysis of a Novel Power Supply Unit for Unmaned Marine Equipment

Wang

Lu²,

Luo³

et al. 2023

J. Phys.: Conf. Ser.

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The problem of insufficient power supply for unmanned marine equipment at sea limits its development and utilization. In this paper, we designed a power supply unit capable of absorbing wave energy and converting it into electricity, which helps to solve the problem of limited power supply ability. Its main structure is demonstrated by theoretical design and modeling, and its operating principle is presented. Its performance (power coefficient and torque coefficient) was numerically simulated via Computational Fluid Dynamics tools, and the effect of blade groups’ solidity on its operating performance was investigated. The study found that the blades of the blade groups can absorb more energy by arranging along the outer ring, and the energy conversion efficiency of the blade groups is related to their load.

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Section: Working Principlementioning

confidence: 99%

Design and Fluid Analysis of a Novel Power Supply Unit for Unmaned Marine Equipment

Wang

Lu²,

Luo³

et al. 2023

J. Phys.: Conf. Ser.

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“…It's worth of note that the added mass coefficient and the radiation damping coefficient depend on the circular frequency 𝜔𝜔, on water depth ratio ℎ/𝐷𝐷 and on buoy beam-draft ratio 𝐵𝐵/𝐷𝐷 [44,45].…”

Section: Hydrodynamics Of the Wecmentioning

confidence: 99%

Wave Energy Converters and Hydraulic Power Take-off: analysis of a possible control strategy

Barone,

Castiglione,

Bova

2023

J. Phys.: Conf. Ser.

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Wave energy conversion is one of the most promising but untapped worldwide technologies. In fact, wave energy is clean and renewable as the solar and wind ones, but also less mature and utilized. Moreover, several Wave Energy Converters (WECs) patents have been developed in the last decades, as evidence of the great potential beneath these systems. Among the different issues related to this technology, the most challenging is controlling such systems. Maximizing the captured energy is indeed the main goal of a WEC’s control mechanism. As for single-mode oscillating absorbers, it has been proven that a resonance condition between body velocity and excitation force must be achieved. This control solution is generally called phase control. Different phase control strategies have been realized since the 1970s and latching control is one of them. However, how to implement sub-optimal phase control in real seas remains an open problem. A numerical model of the wave energy converter and its power take-off system is proposed in this paper. More precisely, the model simulates the hydrodynamics of a WEC point absorber coupled with a hydraulic Power Take Off in regular waves. Additionally, a parametric latching control strategy is suggested to enhance the converter’s power capture performance.

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“…This is the case for the "buoy-type" or "point absorber" (33)(34)(35)(36) type of wave energy converter. The buoy will bob up and down on striking with the incoming waves.…”

Section: Forces Acting On Buoymentioning

confidence: 99%

Design and Analysis of Buoy Geometries for Wave Energy Generator

Khankal¹,

Edlabadkar²,

Minase³

et al. 2021

IJST

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Objectives/Methods: The main objective here is to make an optimum design of buoy. Wave power generation is one of the extensive research fields all over the world. The ocean waves are usually converted into electrical energy by a device called a wave energy converter (WEC). The electricity generated depends upon the intensity of the waves. In a traditional way, the motion of a buoy that occurred in a vertical direction due to waves in water, can be converted into current generation. Here, the numerical simulation using the Ansys tool is done to find an optimum design of buoy shape to get maximum energy conversion. Findings: The simulations have shown that the drag force for the Oval shape is minimum 0.063 N and the first mode of frequency for the Conical shape is minimum 165 Hz for Point-Absorber type Wave Energy Converter.

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Design and analysis of a new wave energy converter based on a point absorber and a hydraulic system harvesting energy from waves near the shore in calm seas

Cited by 9 publications

References 24 publications

Design and Fluid Analysis of a Novel Power Supply Unit for Unmaned Marine Equipment

Design and Fluid Analysis of a Novel Power Supply Unit for Unmaned Marine Equipment

Wave Energy Converters and Hydraulic Power Take-off: analysis of a possible control strategy

Design and Analysis of Buoy Geometries for Wave Energy Generator

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