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Bingyong Guo, Tianyao Wang, Siya Jin, Shunli Duan, Kunde Yang and Yaming Zhao
There are more than thousands of concepts for harvesting wave energy, and wave energy converters (WECs) are diverse in operating principles, design geometries and deployment manners, leading to misconvergence in WEC technologies. Among numerous WEC devic...
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Sarat Chandra Mohapatra, Hafizul Islam and C. Guedes Soares
A mathematical model for the problem of wave diffraction by a floating fixed truncated vertical cylinder is formulated based on Boussinesq equations (BEs). Using Bessel functions in the velocity potentials, the mathematical problem is solved for second-o...
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Yang Yi, Ke Sun, Yongqian Liu, Gang Ma, Chuankai Zhao, Fukang Zhang and Jianhua Zhang
The wave-energy excitation of point absorbers is highly associated with their resonant movement, and harmonic characteristics are of increasing concern in affecting resonance. However, the commonly used linearized power take-off (PTO) systems underestima...
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Jens Engström, Zahra Shahroozi, Eirini Katsidoniotaki, Charitini Stavropoulou, Pär Johannesson and Malin Göteman
Wave energy conversion is a renewable energy technology with a promising potential. Although it has been developed for more than 200 years, the technology is still far from mature. The survivability in extreme weather conditions is a key parameter haltin...
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Timothy Vervaet, Vasiliki Stratigaki, Francesco Ferri, Louis De Beule, Hendrik Claerbout, Bono De Witte, Marc Vantorre and Peter Troch
To offer point absorber wave energy converters (WECs) as a bankable product on the marine renewable energy market, multiple WECs will be installed together in an array configuration. The wave energy community (research and industrial) has identified the ...
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Marcello Rava, Panagiotis Dafnakis, Vittorio Martini, Giuseppe Giorgi, Vincenzo Orlando, Giuliana Mattiazzo, Giovanni Bracco and Andrea Gulisano
This work presents the Water Energy Point Absorber (WEPA), which is a heaving single-buoy point absorber optimized for a specific site off the west coast of Sardinia Island. The aim of the study is to present the optimization process undertaken to identi...
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Guglielmo Papini, Francisco Javier Dores Piuma, Nicolás Faedo, John V. Ringwood and Giuliana Mattiazzo
This paper presents a data-driven model reduction by moment-matching approach to construct control-oriented models for a point absorber device. The methodology chosen and developed generates models which are input-to-state linear, with any nonlinear beha...
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Jinming Wu
The objective of this work is to identify the maximum absorbed power and optimal buoy geometry of a heaving axisymmetric point absorber for a given cost in different sea states. The cost of the wave energy converter is estimated as proportional to the di...
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Domenico Curto, Alessia Viola, Vincenzo Franzitta, Marco Trapanese and Fabio Cardona
The paper investigates an innovative ironless linear generator, installable inside a wave energy converter, in order to produce electricity from sea waves. This energy source is considered strategic for the future, especially in small islands; however, t...
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Jinming Wu
Point absorbers are extensively employed in wave energy conversion. In this work, we studied the point absorber with the buoy of a vertical cylindrical shape. Wave power absorption is obtained through the relative motion between the buoy and an internal ...
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Mohd Nasir Ayob, Valeria Castellucci, Malin Göteman, Joakim Widén, Johan Abrahamsson, Jens Engström and Rafael Waters
This paper presents two wave energy concepts for small-scale electricity generation. In the presented case, these concepts are installed on the buoy of a heaving, point-absorbing wave energy converter (WEC) for large scale electricity production. In the ...
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Mohd Nasir Ayob, Valeria Castellucci, Malin Göteman, Joakim Widén, Johan Abrahamsson, Jens Engström and Rafael Waters
This paper presents two wave energy concepts for small-scale electricity generation. In the presented case, these concepts are installed on the buoy of a heaving, point-absorbing wave energy converter (WEC) for large scale electricity production. In the ...
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Johannes Palm, Claes Eskilsson, Lars Bergdahl and Rickard E. Bensow
This paper analyses the nonlinear forces on a moored point-absorbing wave energy converter (WEC) in resonance at prototype scale (1:1) and at model scale (1:16). Three simulation types were used: Reynolds Averaged Navier?Stokes (RANS), Euler and the line...
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Mohd Nasir Ayob, Valeria Castellucci, Malin Göteman, Joakim Widén, Johan Abrahamsson, Jens Engström and Rafael Waters
This paper presents two wave energy concepts for small-scale electricity generation. In the presented case, these concepts are installed on the buoy of a heaving, point-absorbing wave energy converter (WEC) for large scale electricity production. In the ...
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Venugopalan Kurupath, Rickard Ekström and Mats Leijon
This article proposes a simple and reliable damping strategy for wave powerfarm operation of small-scale point-absorber converters. The strategy is based on passiverectification onto a constant DC-link, making it very suitable for grid integration of the...
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Silvia Bozzi, Adrià Moreno Miquel, Alessandro Antonini, Giuseppe Passoni and Renata Archetti
In the present paper, we investigate the feasibility of wave electricity production in Italian seas by the deployment of the Seabased wave energy converter (WEC). A numerical model of the coupled buoy-generator system is presented, which simulates the be...
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Sanghwan Heo, Weoncheol Koo and Moo-Hyun Kim
A Wavestar-type Wave Energy Converter (WEC) on an elastic foundation structure was investigated using an author-developed coupled dynamic analysis computer program. The program included an elastic foundation structure composed of beam elements, a multi-b...
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Simon Thomas, Marianna Giassi, Mikael Eriksson, Malin Göteman, Jan Isberg, Edward Ransley, Martyn Hann and Jens Engström
This paper introduces a machine learning based control strategy for energy converter arrays designed to work under realistic conditions where the optimal control parameter can not be obtained analytically. The control strategy neither relies on a mathema...
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Elisabetta Tedeschi, Jonas Sjolte, Marta Molinas and Maider Santos
The future success of wave energy in the renewable energy mix depends on the technical advancements of the specific components and systems, on the grid access availability and, ultimately, on the economical profitability of the investment. Small and remo...
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Timothy Vervaet, Vasiliki Stratigaki, Brecht De Backer, Kurt Stockman, Marc Vantorre and Peter Troch
Commercial wave energy exploitation will be realised by placing multiple wave energy converters (WECs) in an array configuration. A point-absorber WEC consists of a floating or submerged body to capture wave energy from different wave directions. This po...
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