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- Xu et al.
Modelling and testing of hydraulic power take-off for wave energy converter on artificial breakwater
The development of new energy has become a historical trend and an inevitable choice in today's world, facing the problem that the possible greenhouse gas emissions and the decline of traditional fossil reserves including oil and coal. Marine energy is a renewable energy source that is green, clean and has huge reserves. The oscillating wave energy converter can effectively convert wave…
- Miquel and Archetti
The MOONWEC, a new concept of point absorber is here presented for the first time after its patent submission. The new concept of WEC merges several working principles, with the aim to benefit from the assets of each single principle. It consists in a hollow floating structure, where the sea water fills a central whole creating a moonpool. The idea is to create a relative motion between the…
- Faraggiana et al.
Wave Energy Converters (WECs) are very often simulated in bi-dimensional waves but a more accurate simulation that represents a more realistic sea state should account for multi-directional waves. In a first approximation directional distribution can be expressed as a Gaussian spreading model. Here we show a simulation of the WaveSub device in multi-directional waves and a visualization of the…
- Reynolds et al.
A novel control strategy is proposed for the control of two fixed pitch tidal turbines subjected to discrete flow speeds whilst interconnected in an array. It is suggested that reliability will be increased by locating all power conversion and control equipment onshore, thereby reducing Operating Expenditure (OPEX) due to offshore equipment failure. An added benefit is utilisation of a single…
- Lavidas and Polinder
With the renewable targets of 2020 reaching ever closer, Europe is continuing its ambitious plans for 2030 of developing innovative projects that assist tackling climate change and increase renewable energy integration. The Netherlands are trying to develop their renewable energy portfolio, to create a viable long-term decarbonized sustainable society. So far majority of development has been…
- Lavidas and Polinder
To properly assess the energy and waves at a region, it is vital to obtain suitable long term metocean conditions. Although, wave buoys are a significant source of information they are not able to provide a detailed and complete resource assessment, as they have inherent spatiotemporal and recording limitations. Therefore, numerical wave models are often used to estimate wave power and…
- Konispoliatis et al.
The efficiency of an oscillating water column (OWC) device for offshore wave energy conversion is affected by several parameters related to: a) the climate environmental conditions at the deployment location; b) the hydrodynamic characteristics of the OWC device as they are related to the design of the oscillating chamber; c) the characteristics of the installed air turbine; and d) the device’…
- Michele et al.
We present a novel mathematical model to investigate the extraction of wave power by flexible floaters. The model is based on the method of dry modes, coupled with a matched eigenfunction expansion. Our model results compare satisfactorily with preliminary data obtained from a demonstrator device, developed at the University of Groningen. We show that the role of elasticity is to increase the…
- Rojas M. and Meza
The Pan American Marine Energy Conference (PAMEC) is intended to bring together researchers in marine renewable energy in the Americas (including the Caribbean). This new research conference is part of a global network of conferences that includes the European Wave and Tidal Energy Conference (EWTEC) and the Asian Wave and Tidal Energy Conference (AWTEC).
This book includes the…
- Ahn and Neary
The thirty-year non-stationary historical trends in the wave energy climate for United States coastal waters between 1980 and 2009 are investigated using spectral partitioned wave data generated from a WaveWatch III® (version 5.05) hindcast. In addition to historical trends in the omni-directional wave power, frequency and directionally resolved wave power, frequency and directional spreading…
- Gao et al.
The triboelectric nanogenerator (TENG) technology is rapidly becoming a promising candidate for harvesting wave energy from the ocean. In this paper, through an in-depth analysis of the working principle of spherical TENGs, for the first time, a dynamic model of this structure is proposed based on a cylinder-cylindrical shell configuration, and integrated into TENGs electric model. We verified…
- Catalbas and Catalbas
- Latif et al.
The momentum towards reduction of greenhouse gas emissions by reduced use of conventional source in marine power networks as well as significant development of renewable energy resources (RRs) have been the motivating factors for inclusion RRs in hybrid maritime microgrid system (HMμGS) and investigation of consequent frequent control mechanism. This article presents an approach of load…
- Doan et al.
This article proposes an experimental apparatus design to measure the power of a cross-flow marine hydrokinetic turbine system operating in a laboratory water tunnel. Data, from one Hall sensor output signal, was processed to capture the three types of torque exerted on the turbines: mechanical loss, brake, and hydrodynamic torque. The method was then applied to compare the power of a twin…
- Haselsteiner and Thoben
In the design process of marine structures like offshore wind turbines the long-term distribution of significant wave height needs to be modelled to estimate loads. This is typically done by fitting a translated Weibull distribution to wave data. However, the translated Weibull distribution often fits well at typical values, but poorly at high wave heights such that extreme loads are…
- Klabučar et al.
With the end of economic production in sight, the oil and gas industry is preparing for the decommissioning of the offshore facilities. Beside of removing the infrastructure, there are numerous possibilities for its future use. Paper analyses possible use of offshore infrastructure for blue energy production from wind. The conversion of excess electricity into chemical energy, which can easily…
- Cardona-Mancilla et al.
Hydrokinetic turbines make it possible to generate electrical energy from a renewable source, using water flow energy, which is usually obtained from rivers, seas, and manmade canals, among other sources. This technology contributes to the conservation of the environment, since it does not require the construction of dams because performance is not limited to the water head, which is one of…
- Wenhai et al.
Careful definition and illustrative case studies are fundamental work in developing a Blue Economy. As blue research expands with the world increasingly understanding its importance, policy makers and research institutions worldwide concerned with ocean and coastal regions are demanding further and improved analysis of the Blue Economy. Particularly, in terms of the management connotation,…
- Abutunis et al.
Hydrokinetic energy conversion systems are emerging as a viable solution for harnessing kinetic energy. However, the typical deployment location is highly space-constrained due to both the nature and the other uses of the river. Therefore, a modified conversion device to overcome these constraints is necessary. The research objective of this work was to evaluate and enhance the performance of…
- Calvario et al.
A power take-off oil-hydraulic system is designed for an oscillating wave surge converter. The adaptation of the converter to the power take-off is performed with genetic algorithms in order to find out the optimal geometrical and control parameters, while different power take-off layout configurations are simulated to maximize their efficiency. The simulations show that the power take-off of…
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