The Performance Analysis and Optimization of Wave Energy Converters from Modeling to Basin Testing
| Author | : Lauren Dickson |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2023 |
| Genre | : Electric generators |
| ISBN | : |
The Performance Analysis And Optimization Of Wave Energy Converters From Modeling To Basin Testing
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Modelling and Optimization of Wave Energy Converters
| Author | : Dezhi Ning |
| Publisher | : CRC Press |
| Total Pages | : 384 |
| Release | : 2022-07-28 |
| Genre | : Technology & Engineering |
| ISBN | : 1000629112 |
Wave energy offers a promising renewable energy source, however, technologies converting wave energy into useful electricity face many design challenges. This guide presents numerical modelling and optimization methods for the development of wave energy converter technologies, from principles to applications. It covers the development status and perspectives of wave energy converter systems; the fundamental theories on wave power absorption; the modern wave energy converter concepts including oscillating bodies in single and multiple degree of freedom and oscillating water column technologies; and the relatively hitherto unexplored topic of wave energy harvesting farms. It can be used as a specialist student textbook as well as a reference book for the design of wave energy harvesting systems, across a broad range of disciplines, including renewable energy, marine engineering, infrastructure engineering, hydrodynamics, ocean science, and mechatronics engineering. The Open Access version of this book, available at www.routledge.com has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license.
Hydrodynamic Analysis and Optimization of a Hinged Type Wave Energy Converter
| Author | : Yuzhu Pearl Li |
| Publisher | : |
| Total Pages | : |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
SeaWEED(Sea Wave Energy Extraction Device) is a multi-body floating wave energy converter (WEC) with hinged joints developed by Grey Island Energy Inc.(GIE) in Canada. Initial conceptual studies have been carried out to evaluate the performance of the first generation device by testing an 1:16 scale model in a wave basin. The experimental results were compared with the numerical solutions. Based on the experimental studies, improvements were made and a second generation model with a new geometry of the hull and a new connection structure was developed. This thesis is mainly focused on the numerical analysis and optimization of the second generation SeaWEED model. In the numerical studies, the hydraulic power take-off (PTO) system was simulated by a linear spring damper system coupled with the motion of the hinged bodies. The vertical hinge motion was computed at a series of wave periods using WAMIT. Optimization was focused on the PTO damping and the geometrical parameters in terms of the draft and the length of the truss structure between hinged bodies by using the response surface method. The optimization was conducted in regular waves and in irregular sea states. An optimal combination of length, draft and PTO damping was recommended for an intended operation location.
Evaluation of the Performance of a Taut-moored Dual-body Direct-drive Wave Energy Converter Through Numerical Modeling and Physical Testing
| Author | : David E. Elwood |
| Publisher | : |
| Total Pages | : 196 |
| Release | : 2009 |
| Genre | : Electric current converters |
| ISBN | : |
With energy prices rising and increasing concern about the influence of fossil fuels on climate change, wave energy systems are on the verge of commercial implementation. These first generation wave energy converters utilize either pneumatics or hydraulics to convert the mechanical energy of waves into electricity. For the last several years, the wave energy research group at Oregon State University has focused on increasing the efficiency of wave energy conversion systems by developing direct drive power take-off systems. Beginning in the fall of 2006 an interdisciplinary team was tasked with designing and building a 1kW direct drive wave energy converter to be tested in the open ocean. Their device, the SeaBeavI, provided a proof of concept for a taught moored, dual body, wave energy conversion system using a linear generator for power take-off. To evaluate the performance of the SeBeavI system a method was developed to incorporate measured forces from the linear generator into a coupled model of the system. This thesis is comprised of one conference paper and two journal papers. The conference paper provides an overview of the design and construction of the SeaBeavI. The first journal paper presents an in-depth description of the physical testing and numerical modeling of the system. The second journal paper provides performance predictions for the device based on the combined numerical and experimental results.
Ocean Wave Energy Conversion
| Author | : Aurelien Babarit |
| Publisher | : Elsevier |
| Total Pages | : 264 |
| Release | : 2017-11-17 |
| Genre | : Technology & Engineering |
| ISBN | : 0081023901 |
The waves that animate the surface of the oceans represent a deposit of renewable energy that for the most part is still unexploited today. This is not for lack of effort, as for more than two hundred years inventors, researchers and engineers have struggled to develop processes and systems to recover the energy of the waves. While all of these efforts have failed to converge towards a satisfactory technological solution, the result is a rich scientific and technical literature as well as extensive and varied feedback from experience. For the uninitiated, this abundance is an obstacle. In order to facilitate familiarization with the subject, we propose in this work a summary of the state of knowledge on the potential of wave energy as well as on the processes and technologies of its recovery (wave energy converters). In particular, we focus on the problem of positioning wave energy in the electricity market, the development of wave energy conversion technologies from a historical perspective, and finally the energy performance of the devices. This work is aimed at students, researchers, developers, industry professionals and decision makers who wish to acquire a global perspective and the necessary tools to understand the field. Reviews the state of knowledge and developments on wave energy recovery Presents the history of wave energy recovery Classifies the various systems for recovering this type of energy
Proceedings of the Fourth International Conference in Ocean Engineering (ICOE2018)
| Author | : K. Murali |
| Publisher | : Springer |
| Total Pages | : 929 |
| Release | : 2018-12-31 |
| Genre | : Technology & Engineering |
| ISBN | : 9811331340 |
This book comprises selected proceedings of the Fourth International Conference in Ocean Engineering (ICOE2018), focusing on emerging opportunities and challenges in the field of ocean engineering and offshore structures. It includes state-of-the-art content from leading international experts, making it a valuable resource for researchers and practicing engineers alike.
Ocean Wave Energy
| Author | : Joao Cruz |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 435 |
| Release | : 2007-12-22 |
| Genre | : Technology & Engineering |
| ISBN | : 3540748954 |
The authors of this timely reference provide an updated and global view on ocean wave energy conversion – and they do so for wave energy developers as well as for students and professors. The book is orientated to the practical solutions that this new industry has found so far and the problems that any device needs to face. It describes the actual principles applied to machines that convert wave power to electricity and examines state-of-the-art modern systems.
Analysis and Development of a Three Body Heaving Wave Energy Converter
| Author | : Scott J. Beatty |
| Publisher | : |
| Total Pages | : |
| Release | : 2009 |
| Genre | : |
| ISBN | : |
A relative motion based heaving point absorber wave energy converter is being co-developed by researchers at the University of Victoria and SyncWave Systems Inc. To that end--this thesis represents a multi-faceted contribution to the development effort. A small scale two-body prototype wave energy converter was developed and tested in a wave tank. Although experimental problems were encountered, the results compare reasonably well to the output of a two degree of freedom linear dynamics model in the frequency domain. A two-body wave energy converter design is parameterized as a basis for an optimization and sensitivity study undertaken to illustrate the potential benefits of frequency response tuning. Further, a mechanical system concept for frequency response tuning is presented. The two degree of freedom model is expanded to three degrees of freedom to account for the tuning system. An optimization procedure, utilizing a Sequential Quadratic Programming algorithm, is developed to establish control schedules to maximize power capture as a function of the control variables. A spectral approach is developed to estimate WEC power capture in irregular waves. Finally, as a case study, the modeling, optimization, and spectral methods are applied to predict performance for a large scale wave energy converter deployed offshore of a remote Alaskan island. Using archived sea-state data and community electrical load profiles, a wave/diesel hybrid integration with the remote Alaskan community power system is assessed to be technologically feasible.
Assessment and Nonlinear Modeling of Wave, Tidal and Wind Energy Converters and Turbines
| Author | : Madjid Karimirad |
| Publisher | : |
| Total Pages | : 290 |
| Release | : 2020-09-04 |
| Genre | : |
| ISBN | : 9783039369126 |
The Special Issue "Assessment and Nonlinear Modeling of Wave, Tidal, and Wind Energy Converters and Turbines" contributes original research to stimulate the continuing progress of the offshore renewable energy (ORE) field, with a focus on state-of-the-art numerical approaches developed for the design and analysis of ORE devices. Particularly, this collection provides new methodologies, analytical/numerical tools, and theoretical methods that deal with engineering problems in the ORE field of wave, wind, and current structures. This Special Issue covers a wide range of multidisciplinary aspects, such as the 1) study of generalized interaction wake model systems with elm variation for offshore wind farms; 2) a flower pollination method based on global maximum power point tracking strategy for point-absorbing type wave energy converters; 3) performance optimization of a Kirsten-Boeing turbine using a metamodel based on neural networks coupled with CFD; 4) proposal of a novel semi-submersible floating wind turbine platform composed of inclined columns and multi-segmented mooring lines; 5) reduction of tower fatigue through blade back twist and active pitch-to-stall control strategy for a semi-submersible floating offshore wind turbine; 6) assessment of primary energy conversion of a closed-circuit OWC wave energy converter; 7) development and validation of a wave-to-wire model for two types of OWC wave energy converters; 8) assessment of a hydrokinetic energy converter based on vortex-induced angular oscillations of a cylinder; 9) application of wave-turbulence decomposition methods on a tidal energy site assessment; 10) parametric study for an oscillating water column wave energy conversion system installed on a breakwater; 11) optimal dimensions of a semisubmersible floating platform for a 10 MW wind turbine; 12) fatigue life assessment for power cables floating in offshore wind turbines.
