Marianna Giassi
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View article: Comparison of Wave Energy Park Layouts by Experimental and Numerical Methods
Comparison of Wave Energy Park Layouts by Experimental and Numerical Methods Open
An experimental campaign of arrays with direct-driven wave energy converters of point-absorbing type is presented. The arrays consist of six identical floats, moving in six degrees of freedom, and six rotating power take-off systems, based…
View article: Economical layout optimization of wave energy parks clustered in electrical subsystems
Economical layout optimization of wave energy parks clustered in electrical subsystems Open
To obtain a maximum power output and minimized capital and operational costs, the layout of wave energyparks needs to be optimally designed. An economical model for large-scale wave energy systems is built andmerged into an evolutionary op…
View article: Advances and Challenges in Wave Energy Park Optimization—A Review
Advances and Challenges in Wave Energy Park Optimization—A Review Open
A commercial wave energy system will typically consist of many interacting wave energy converters installed in a park. The performance of the park depends on many parameters such as array layout and number of devices, and may be evaluated …
View article: Numerical and experimental modelling for wave energy arrays optimization
Numerical and experimental modelling for wave energy arrays optimization Open
Many wave power conversion devices, especially point-absorbers, do not provide alone the necessary amount of converted electricity to be cost effective, instead they are designed to be deployed in arrays of many units. Such arrays, or park…
View article: On the calibration of a WEC-Sim model for heaving point absorbers
On the calibration of a WEC-Sim model for heaving point absorbers Open
The outcomes of reliability based design\nmethods applied to wave energy converters (WECs) in the\nearly stages of development depend heavily on the\nuncertainty in the variables used to determine the loads\nacting on, and responses of, de…
View article: A Model Free Control Based on Machine Learning for Energy Converters in an Array
A Model Free Control Based on Machine Learning for Energy Converters in an Array Open
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 reli…
View article: A model free control based on machine learning forenergy converters in an array
A model free control based on machine learning forenergy converters in an array Open
This paper introduces a model-free, "on-the-fly" learning control strategy for arrays of energy converters with adjustable generator damping. The devices are arranged so that they are affected simultaneously by the energy medium.…
View article: Performance of a Direct-Driven Wave Energy Point Absorber with High Inertia Rotatory Power Take-off
Performance of a Direct-Driven Wave Energy Point Absorber with High Inertia Rotatory Power Take-off Open
An alternating rotatory generator using an eddy current break is developed as a physical scale model of a direct-driven floating point absorber power take-off (PTO) for wave tank tests. It is shown that this design is a simple and cost-eff…
View article: Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves Open
For most wave energy technology concepts, large-scale electricity production and cost-efficiency require that the devices are installed together in parks. The hydrodynamical interactions between the devices will affect the total performanc…
View article: Optimization of Point Absorber Wave Energy Parks
Optimization of Point Absorber Wave Energy Parks Open
Renewable energies are believed to play the key role in assuring a future of sustainable energy supply and low carbon emissions. Particularly, this thesis focus on wave energy, which is created by extracting the power stored in the waves o…
View article: An accurate and cost efficient physical scale model of a direct driven point-absorber with constant damping power take-off
An accurate and cost efficient physical scale model of a direct driven point-absorber with constant damping power take-off Open
When it comes to validating simulation results for wave energy converters, physical scale experiments play an important role as a cost effective preliminary stage before full- scale test. But modelling the power take-off for scale models c…