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- Journal Article:
Marrone et al.
The present work addresses the evaluation by numerical simulation of the extreme loads acting on a flap-type wave energy converter. To this aim, a realistic situation is considered: an extreme wave impacting a bottom-mounted pitching device, consisting of a partly submerged flap, placed in front of a dike on the coast of Bayonne, south-west Atlantic coast, France. The SPH model can be an…
- Journal Article:
Wang
This paper concerns the prediction of the power outputs of wave energy converters (WECs) operating in shallow water nonlinear waves. The bottom effects on the power performances of WECs (a phenomenon that has always been overlooked by the previous researchers) have been taken into account during the calculations. Using an oscillating surge wave energy converter (OSWEC) as an example, it is…
- Conference Paper:
Sarkar et al.
This paper investigates the behaviour of a bottom hinged flap-type wave energy converter (WEC), namely the Oscillating Wave Surge Converter (OWSC), in random seas. The semi-analytical model of Renzi and Dias (2013b) for an OWSC in the open ocean is considered to analyze the performance of the device in random incident waves. The modelling is performed within the framework of a linear potential…
- Conference Paper:
Henry et al.
This paper describes a series of experiments undertaken to investigate the slamming of an Oscillating Wave Surge Converter in extreme sea states. These two-dimensional experiments were undertaken in the Wave Flume at Ecole Centrale Marseille. Images from a high speed camera are used to identify the physics of the slamming process. A single pressure sensor is used to record the characteristic…
- Journal Article:
Tay and Venugopal
The oscillating wave surge converter (OWSC) is a type of ocean wave power device typically consisting of a flap, or arm, hinged at the bottom to allow forward and backward movement by surging waves, and is efficient in generating electricity from waves due to its capability in operating at a wide range of wave spectra. The power generated from the OWSC could be further maximized by arranging…
- Journal Article:
Hillis et al.
CCell is a type of Oscillating Surge Wave Energy Converter (OSWEC) under development by Zyba Renewables Ltd. Laboratory scale wave tank tests have been conducted with a prototype device equipped with a passive controllable hydraulic power take-off system. The results are used to derive a simplified semi-analytical model of the governing hydrodynamics, providing a basis for simulation studies…
- Report:
Weinstein et al.
Principle Power Inc. and National Renewable Energy Lab (NREL) have completed a contract to assess the technical and economic feasibility of integrating wave energy converters into the WindFloat, resulting in a new concept called the WindWaveFloat (WWF). The concentration of several devices on one platform could offer a potential for both economic and operational advantages. Wind and wave…
- Conference Paper:
Lydon et al.
Modeling oscillating surge wave energy converter (OSWEC) systems to accurately predict their behavior has been a notoriously difficult challenge for the wave energy field. This is particularly challenging in realistic sea states where nonlinear WEC dynamics are common due to complex fluid-structure interaction, breaking waves, and other phenomena. Common modeling techniques for OSWECs include…
- Presentation:
Hartman and Polagye
Oscillating Surge Wave Energy Converters (OSWECs) aim to harness the energy in ocean waves using a buoyant flap with a bottom hinge that oscillates in response to surge forces. To interpret OSWEC performance in real-word conditions, foundational knowledge is required from simulation and laboratory testing with scaled models. In laboratory experiments to characterize an OSWEC’s hydrodynamics,…
- Report:
Cerebreon Technologies
In 2015, Aquamarine Power Limited (APL), developer of the Oyster 1 and Oyster 800 wave energy converters, went into administration and their intellectual property (IP) was acquired by Wave Energy Scotland Limited (WES).
The IP contained a significant body of information from exploratory, small-scale tank tests completed during the company’s trading history. This information exists…
- Report:
Cerebreon Technologies
In 2015, Aquamarine Power Limited (APL), developer of the Oyster 1 and Oyster 800 wave energy converters, went into administration and their intellectual property (IP) was acquired by Wave Energy Scotland Limited (WES).
The IP contained a significant body of information from exploratory, small-scale tank tests completed during the company’s trading history. This information exists…
- Presentation:
Kenny and McNally
Internal reaction mass (IRM) wave energy converters (WEC) capture wave energy by reacting against a moving mass that is suspended within their hulls. Due to their hermetically sealed Power Take Off (PTO), compact form factor and relatively simple mooring requirements, the National Renewable Energy Laboratory has identified IRM WECs are good candidates for applications such as ocean observation…
- Presentation:
Brekken et al.
Chaotic behavior is highly influential of a system's dynamics and directly affects its performance, raising the question if it is a desirable state or not depending on the user's goal. Studies thus far investigating the relationship between chaotic behavior in power take-off (PTO) systems in wave energy converters (WEC) are limited and evaluated in regular, single frequency waves. This is…
- Presentation:
Lydon et al.
Modeling wave energy converter (WEC) systems to accurately predict their behavior has been a notoriously difficult challenge for the wave energy field, particularly in polychromatic sea states. A key challenge is that accurate, physics-based WEC modeling has too high a computational cost to be used for future-state prediction and optimal control, two areas of active research in the wave energy…
- Journal Article:
Gioia et al.
The energy coming from the motion of the waves of seas and oceans could be an important component in the solution of the energy problem related to the pursuit of alternatives to fossil fuels. However, wave energy is still technologically immature and it has not reached the economic feasibility required for economy of scale. One of the major technological challenges for the achievement of this…
- Journal Article:
Carapellese et al.
Energy-maximising wave energy conversion control strategies are commonly based upon direct optimal control theory, where the control problem is discretised and transcribed into a nonlinear programme, and a solution is found via numerical routines. Though appealing from an optimality viewpoint, the real-time application of such strategies to realistic (complex) wave energy systems,…
- Journal Article:
Michailides et al.
This paper presents a study of the wave- and wind-induced responses of the combined energy concept Semisubmersible wind energy and Flap-type wave energy Converter (SFC) under operational and survival conditions based on experimental data. The measured responses that are studied include the motions of the semisubmersible, the rotation of the flap-type Wave Energy Converters (WECs), the tension…
- Journal Article:
Husain et al.
Oceans are harsh environments and can impose significant loads on deployed structures. A wave energy converter (WEC) should be designed to maximize the energy absorbed while ensuring the operating wave condition does not exceed the failure limits of the device itself. Therefore, the loads endured by the support structure are a design constraint for the system. Furthermore, the WEC should be…
- Journal Article:
Wan
Based on the past ten years of ERA5 wave field data, this study analyzed the distribution of wave energy resources in the coastal waters of each province around the South China Sea. In view of the single resource evaluation method, a regional classification method was established that comprehensively considered the three factors that impact wave energy resource reserves, the suitable water…
- Journal Article:
Thakur
Ocean waves are the greatest unexploited renewable energy resource which would reduce our reliance on fossil fuels. It can be harnessed throughout the year using a hybrid offshore platform. In this paper, hybrid offshore wave energy platform and its working principle, is explained explicitly. These devices when use independently are found to be not very efficient in terms of generating energy…
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