Mathematical modelling of wave energy systems

Lockett, F. P.

doi:10.1016/0960-1481(96)88495-3

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…The central buoy is fixed to the seabed, while the external is able to move vertically. Neglecting the fixed buoy, the sea wave energy converter can be modeled as a single body having one degree of freedom along the vertical axis y [23]. The WEC behavior is simulated in the time domain, because of the non-linearity of the power take off (PTO) system.…”

Section: Mathematical Modelingmentioning

confidence: 99%

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Franzitta

Curto

2017

Energies

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Abstract:The aim of this work is to explore the possibility of transitioning a fuel powered island to a renewable powered one. This transition is analyzed for the real MV/LV distribution system of the island of Pantelleria, in the Mediterranean Sea. Particularly, this work is focused on a renewable source nowadays totally unused: wave energy. Thanks to the innovative generator prototype designed by Department of Energy of University of Palermo (Italy), wave energy is able to represent a primary source for the production of electric energy in the Mediterranean islands. The procedures applied in the present article, as well as the main equations used, are the result of previous applications made in different technical fields that show a good replicability.

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Section: Mathematical Modelingmentioning

confidence: 99%

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Franzitta

Curto

2017

Energies

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“…The wave energy converter is modeled as a single body system with one degree of freedom along the vertical axis (heave mode), as this accounts for most of the movement [31]. The WEC behavior is simulated in the time domain, due to the non-linearity of the PTO system.…”

Section: Mathematical Modelingmentioning

confidence: 99%

Modeling of a Point Absorber for Energy Conversion in Italian Seas

et al. 2013

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Abstract: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 behavior of the wave energy converter under regular waves of different wave heights and periods. The hydrodynamic forces, including excitation force, radiation impedance and hydrostatic force, are calculated by linear potential wave theory, and an analytical model is used for the linear generator. Two buoys of different radii are considered to explore the effect of buoy dimension on energy conversion and device efficiency. The power output is maximized by adding a submerged object to the floating buoy, in order to bring the system into resonance with the typical wave frequencies of the sites. The simulation results show a very good agreement with the published data on the Seabased WEC. The model is used to estimate energy production at eight Italian offshore locations. The results indicate that the degree of utilization of the device is higher than 20% at the two most energetic Italian sites (Alghero and Mazara del Vallo) and that it can be considerably increased if the floating body is connected to a submerged object, thanks to the resonant behavior of the WEC. In OPEN ACCESSEnergies 2013, 6 3034 this case, the degree of utilization of the device would be higher than 40% at most of the study sites, with the highest value at Mazara del Vallo. The work enlarges the perspective, to be confirmed by experimental tests and more accurate numerical modeling, on clean electric power production from ocean waves in the Italian seas.

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“…The wave energy converter is modeled as a single body system with one degree of freedom along the vertical axis (heave mode), as this accounts for most of the movement [13], mathematical model of point absorber is shown in Fig. 1.…”

Section: Mathematical Model Of Point Absorbermentioning

confidence: 99%

Analysis of Electromagnetic Force for the Linear Generator Wave Energy Converters

Huang

Gao

Zheng

et al. 2015

AMM

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In recent decades environmental pollution and energy crisis have become a challenging task for the scientists and engineers who lead them to innovate new technology and solve this problem by reducing environmental pollution and by exploiting the new source of energy. In this regard wave energy is appeared to be a suitable outcome in order to resolve the current issues. This paper studies and summarizes that the linear generators are considered a device which is used to convert wave energy into electrical energy efficiently. It is the first time to calculate the electromagnetic force by considering the linear generator and at the same time simulated by Ansoft Maxwell software; by providing calculated value and simulated value, it is also verified that the calculated result is accurate with a small probability error as compared to software calculated value.

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Mathematical modelling of wave energy systems

Cited by 5 publications

References 2 publications

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Modeling of a Point Absorber for Energy Conversion in Italian Seas

Analysis of Electromagnetic Force for the Linear Generator Wave Energy Converters

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