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A Novel Linear Generator For Wave Energy Applications
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Book Synopsis A Novel Linear Generator for Wave Energy Applications by : Steven George Ernst
Download or read book A Novel Linear Generator for Wave Energy Applications written by Steven George Ernst and published by . This book was released on 2009 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increasing effort to identify alternative methods of energy generation, extraction of ocean energy has gathered a large interest. Research and industry have begun considering wave energy as the next new alternative energy. The unique challenges of ocean energy requires a wave energy converter to be both robust and efficient. When looking further into energy extraction via the point absorber technology, a direct drive linear generator efficiently converts the vertical wave motion into electrical energy. With considerations of long term reliability in an ocean environment as well as design to product cost, a longitudinal flux variable reluctance permanent magnet generator is a promising generator topology. This thesis identifies the reasons behind the selection of this particular generator topology for a point absorber. It provides a description of the generator topology and operation before continuing with the details as to the development of a variable reluctance permanent magnet generator with specifically known design constraints. The thesis further describes the implementation, testing, and results of such a device, while touching on considerations to take into account throughout the design process.
Book Synopsis Novel Control of a Permanent Magnet Linear Generator for Ocean Wave Energy Applications by : Aaron H. VanderMeulen
Download or read book Novel Control of a Permanent Magnet Linear Generator for Ocean Wave Energy Applications written by Aaron H. VanderMeulen and published by . This book was released on 2008 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave energy conversion devices are a rapidly growing interest worldwide for the potential to harness a sustainable and renewable energy source. Due to the oscillatory nature of ocean waves, the power generated from a permanent magnet linear generator (PMLG) for ocean wave energy conversion is pulsed. Focusing on direct drive technology, the PMLG directly translates the motion of the waves into electrical energy. The power generated, left unconditioned, is not easily used or stored. With conventional diode rectification topologies, line currents can not be controlled easily, resulting in an uncontrolled generator output and force. With an active rectifier topology, the real and reactive power from the PMLG is fully controllable. This thesis will investigate the generator modeling and design of a novel three-phase active rectifier topology and force controller with a dc-dc converter for bus voltage regulation. An in depth analysis for the controller design and simulations are presented. Hardware for the three-phase active rectifier is specified and built with initial lab test results. The controller design is implemented with National Instruments0́9 LabView and compiled on a CompactRIO real-time controller.
Book Synopsis Novel Double-sided Linear Generator for the Wave Energy Conversion by : Mihajlo Ljubomir Curcic
Download or read book Novel Double-sided Linear Generator for the Wave Energy Conversion written by Mihajlo Ljubomir Curcic and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The direct drive point absorber is a robust and efficient system for wave energy harvesting, where the linear generator represents the most complex part of the system. Therefore, its design and optimization are crucial tasks. The tubular shape of a linear generator's magnetic circuit offers better permanent magnet flux encapsulation and reduction in radial forces on the translator due to its symmetry. A double stator topology can improve the power density of the linear tubular machine. Common designs employ a set of aligned stators on each side of a translator with radially magnetized permanent magnets. Such designs require doubling the amount of permanent magnet material and lead to an increase in the cogging force. The design presented in this thesis utilizes a translator with buried axially magnetized magnets and axially shifted positioning of the two stators such that no additional magnetic material, compared to single side machine, is required. In addition to the conservation of magnetic material, a significant improvement in the cogging force occurs in the two phase topology, while the double sided three phase system produces more power at the cost of a small increase in the cogging force. The analytical and the FEM models of the generator are described and their results compared to the experimental results. In general, the experimental results compare favourably with theoretical predictions. However, the experimentally observed permanent magnet flux leakage in the double sided machine is larger than predicted theoretically, which can be justified by the limitations in the prototype fabrication and resulting deviations from the theoretical analysis.
Book Synopsis 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA) by : IEEE Staff
Download or read book 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA) written by IEEE Staff and published by . This book was released on 2021-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Linear machines and drives
Book Synopsis Evaluation of Ocean-Energy Conversion Based on Linear Generator Concepts by : Michael A. Stelzer Ph. D.
Download or read book Evaluation of Ocean-Energy Conversion Based on Linear Generator Concepts written by Michael A. Stelzer Ph. D. and published by AuthorHouse. This book was released on 2012-06 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is shown theoretically that the buoy can be designed to have a greater heave response than that of the height of a passing wave resulting in an increase in generated power from the linear generator.
Book Synopsis Handbook of Ocean Wave Energy by : Arthur Pecher
Download or read book Handbook of Ocean Wave Energy written by Arthur Pecher and published by Springer. This book was released on 2016-12-07 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. This book offers a concise, practice-oriented reference-guide to the field of ocean wave energy. The ten chapters highlight the key rules of thumb, address all the main technical engineering aspects and describe in detail all the key aspects to be considered in the techno-economic assessment of wave energy converters. Written in an easy-to-understand style, the book answers questions relevant to readers of different backgrounds, from developers, private and public investors, to students and researchers. It is thereby a valuable resource for both newcomers and experienced practitioners in the wave energy sector.
Book Synopsis Linear Generators in Wave Energy Conversion by : Luis Fernandez de Valderrama
Download or read book Linear Generators in Wave Energy Conversion written by Luis Fernandez de Valderrama and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As the energy demand increases and climate change becomes a major problem, the solution to decrease greenhouse gas emissions and mitigate the effects of climate change involves increasing the use of sustainable and renewable sources to generate electricity. However, developed renewable sources have inconveniences that make them incapable of generating the totality of the electricity that a country demands. Wave energy is an alternative renewable energy source that can help mitigate the inconveniences of other renewable sources and decrease the emission of greenhouse gases. This study aims to find the potential of linear generators in wave energy by analyzing the output based on different wave conditions. The study uses a numerical simulation verified by experimental data to optimize the output of the linear generator. Based on the current results, it can be stated that adding magnets increases the output, and that the maximum output greatly varies based on the coil configuration. The main external factor that improves the output is a short wave period.
Book Synopsis Reaction Force Control Implementation of a Linear Generator in Irregular Waves for a Wave Power System by : Bin Li
Download or read book Reaction Force Control Implementation of a Linear Generator in Irregular Waves for a Wave Power System written by Bin Li and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Most designs for wave energy converters include a hydraulic (or pneumatic) interface between the wave device and the generator to smooth electricity production, but a direct drive power take-off system is a possible way of increasing the power transfer efficiency and the reliability, which was first adopted by Archimedes Wave Swing. Direct drive wave energy systems normally include a low speed linear generator directly coupled with the wave device. With no mechanical interface, the mechanical energy loss and maintenance requirements can, in theory, be significantly reduced. To maximize the energy capture, the motion of the wave energy converter must be controlled to achieve mechanical resonance so that the velocity is in phase with the incoming waves. So far, a number of control methods have been proposed, but few of them have been tested experimentally. For direct drive linear generators in real sea conditions, reaction force control is shown to be an effective way to achieve control where knowledge of future wave could not be required. Different reaction force control methodologies are suggested where the force is provided directly from the linear generator. Among these methodologies, complex conjugate control is regarded as the optimal control and can be used to achieve mechanical resonance. When resonance occurs, some system parameters such as the system excursion and required power take-off force become extremely large, and may exceed the design parameters. In this thesis, the system is modelled under reaction force control taking into account practical considerations which are based on design parameters. A novel control scheme for a direct drive linear generator to achieve such reaction force control in irregular waves is proposed, where a voltage-source rectifier is employed as the bridge between the linear generator and the dc bus. The application of linear generator in real wave conditions not only has inherent advantages, but also present a big challenge for controller design in order to obtain maximum power production. For a linear generator in real sea states, reaction force control idea can be implemented to adjust the velocity of motion, hence to maximize the power production, where the required currents in the generator coils to provide the desired force are constantly varying in frequency and amplitude. The control strategy of the active rectifier is developed based on the derived three-phase currents and the dynamic response of the system to determine varying modulation indices. The unknown situations and some unmeasurable parameters in the system degrade the performance of the control system, hence the current feedback and PI controller are both adopted to reject the effect of the disturbance. Simulation verifications are included for the proposed control idea.
Book Synopsis Ocean Waves and Oscillating Systems by : Johannes Falnes
Download or read book Ocean Waves and Oscillating Systems written by Johannes Falnes and published by Cambridge University Press. This book was released on 2020-05-28 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand the absorption of energy from ocean waves by means of oscillating systems with this useful new edition. Essential for engineers, researchers, and graduate students, and an indispensable tool for those who work in this field.
Download or read book Ocean Wave Energy written by Joao Cruz and published by Springer Science & Business Media. This book was released on 2007-12-22 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Proceedings of 7th ASRES International Conference on Intelligent Technologies by : Karm Veer Arya
Download or read book Proceedings of 7th ASRES International Conference on Intelligent Technologies written by Karm Veer Arya and published by Springer Nature. This book was released on 2023-07-05 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the 7th International Conference on Intelligent Technologies (ICIT 2022) held on December 16-18, 2022, at the University of Pembangunan Jaya, Jakarta, Indonesia. The respective contributions from industrial practitioners and researchers present advanced studies related to application of intelligent technologies in various fields of research industry and society. This includes applications in variety of fields such as computational intelligence, data science and engineering, communication and networking, signal and image processing, electrical devices, circuits systems, robotics, instrumentation, automation, biomedical, and health care.
Book Synopsis Advanced Linear Machines and Drive Systems by : Wei Xu
Download or read book Advanced Linear Machines and Drive Systems written by Wei Xu and published by Springer Nature. This book was released on 2019-09-07 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects the latest theoretical and technological concepts in the design and control of various linear machines and drive systems. Discussing advances in the new linear machine topologies, integrated modeling, multi-objective optimization techniques, and high-performance control strategies, it focuses on emerging applications of linear machines in transportation and energy systems. The book presents both theoretical and practical/experimental results, providing a consistent compilation of fundamental theories, a compendium of current research and development activities as well as new directions to overcome critical limitations.
Book Synopsis Linear Synchronous Machines by : Amal Souissi
Download or read book Linear Synchronous Machines written by Amal Souissi and published by Springer. This book was released on 2018-11-17 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to two major sustainable applications of linear synchronous machines: wave energy conversion and magnetic levitation train technology. To do so, it begins with a state-of-the-art review of linear machines, covering induction and synchronous topologies and their applications, with a particular focus on sustainable applications. This is followed by an analysis of the electromagnetic modeling of linear synchronous machines, the goal being to investigate their main features, especially their force production capabilities.
Book Synopsis Oceanic Wave Energy Conversion by : Omar Farrok
Download or read book Oceanic Wave Energy Conversion written by Omar Farrok and published by Springer Nature. This book was released on with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Permanent Magnet Linear Generators for Marine Wave Energy Converters by : Nikola Gargov
Download or read book Permanent Magnet Linear Generators for Marine Wave Energy Converters written by Nikola Gargov and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Linear PM Generator for Wave Energy Conversion by : Rajkumar Parthasarathy
Download or read book Linear PM Generator for Wave Energy Conversion written by Rajkumar Parthasarathy and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis From Smart City to Smart Factory for Sustainable Future: Conceptual Framework, Scenarios, and Multidiscipline Perspectives by : Marek Pagac
Download or read book From Smart City to Smart Factory for Sustainable Future: Conceptual Framework, Scenarios, and Multidiscipline Perspectives written by Marek Pagac and published by Springer Nature. This book was released on with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt:
