Optimization of an energy harvesting buoy for coral reef monitoring

Pirisi, A.; Grimaccia, Francesco; Mussetta, Marco; Zich, R.E.; Johnstone, Ron; Palaniswami, Marimuthu; Rajasegarar, Sutharshan

doi:10.1109/cec.2013.6557627

Cited by 16 publications

(9 citation statements)

References 19 publications

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“…A buoy normally consists of a wireless sensor network node (CPU, sensors, radio, and batteries), an energy harvesting module, underwater sensors and a mooring system. For example, Pirisi et al [ 78 ] proposed a special energy harvesting buoy which can effectively use sea wave energy conversion as a power source and has potential applications in marine environment monitoring. Albaladejo et al [ 59 ] designed a multisensory buoy system which can be effectively used for shallow marine environment monitoring.…”

Section: Research Challenges and Opportunitiesmentioning

confidence: 99%

Applications of Wireless Sensor Networks in Marine Environment Monitoring: A Survey

Guobao

Shen

Wang

2014

Sensors

336

154

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With the rapid development of society and the economy, an increasing number of human activities have gradually destroyed the marine environment. Marine environment monitoring is a vital problem and has increasingly attracted a great deal of research and development attention. During the past decade, various marine environment monitoring systems have been developed. The traditional marine environment monitoring system using an oceanographic research vessel is expensive and time-consuming and has a low resolution both in time and space. Wireless Sensor Networks (WSNs) have recently been considered as potentially promising alternatives for monitoring marine environments since they have a number of advantages such as unmanned operation, easy deployment, real-time monitoring, and relatively low cost. This paper provides a comprehensive review of the state-of-the-art technologies in the field of marine environment monitoring using wireless sensor networks. It first describes application areas, a common architecture of WSN-based oceanographic monitoring systems, a general architecture of an oceanographic sensor node, sensing parameters and sensors, and wireless communication technologies. Then, it presents a detailed review of some related projects, systems, techniques, approaches and algorithms. It also discusses challenges and opportunities in the research, development, and deployment of wireless sensor networks for marine environment monitoring.

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Section: Research Challenges and Opportunitiesmentioning

confidence: 99%

Applications of Wireless Sensor Networks in Marine Environment Monitoring: A Survey

Guobao

Shen

Wang

2014

Sensors

336

154

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“…Depending on the purpose, direct driven point absorber system can be realized over the vast scale of power capacities, ranging from few tents of watts to megawatts [Pirisi, 2010& Mueller, 2002. Various studies have shown potential of small direct driven wave energy converters to satisfy energy needs of the marine communication, surveillance and signalization equipment in a persistent and sustainable manner [Pirisi, 2013]. Right now, it seems that those small power consumers might be the most suitable first assignment for the developing point absorbers technology.…”

Section: Direct Driven Point Absorbermentioning

confidence: 99%

A novel double-sided linear generator for wave energy conversion

Curcic

Quaicoe

Bachmayer

2015

OCEANS 2015 - Genova

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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.ii ACKNOWLEDGEMENTS

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“…Some recent research papers focus on optimization of these linear generators, such as the graphical optimization is presented in [16] for an iron-less and brush-less PMLG. The optimization of two tubular PMLGs for OWE conversion are presented in [17] optimization of a superconducting racetrack magnet for the rotor of a wind-farm generator is described in [18]. However, the shape optimization of the stator and translator as shown in [19] and [20] greatly affects and improves different electrical and magnetic parameters of the linear generator.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Novel Dual-Port Linear Generator for Oceanic Wave Energy Conversion

Farrok

Islam

Muttaqi

et al. 2020

IEEE Trans. Ind. Electron.

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All the existing linear generators used for oceanic wave energy conversions are basically a single-port linear electrical generators (SPLEGs). The conventional SPLEG transfers electrical power to the load/grid discontinuously due to its working principle and the intermittent nature of oceanic waves. This paper proposes a new dual-port linear electrical generator (DPLEG) topology, which is capable to transfer electrical power with an adequate voltage even at zero vertical velocity of the oceanic wave. The analysis shows that the efficiency and the performance of the DPLEG depend greatly on the stator tooth design. For this reason, the proposed DPLEG is optimized using the genetic algorithm for successful operation. The shape optimization method is implemented to determine the stator tooth shape of the DPLEG. By optimizing the stator tooth shape, the force ripples of the proposed DPLEG is further reduced by 40.89%. The analysis is carried out using multiphysics simulation and the electromagnetic performance is determined by the finite element analysis. Simulation results show that the shape optimization of the stator tooth not only minimizes the force ripples of the translator but also increases the power generation of the DPLEG. A laboratory prototype of the proposed DPLEG is built to test the concept of the proposed DPLEG topology. The experimental results verify its unique advantage by showing that it can generate an adequate voltage even at zero vertical velocity of the oceanic wave which cannot be achieved using the existing SPLEGs.

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Optimization of an energy harvesting buoy for coral reef monitoring

Cited by 16 publications

References 19 publications

Applications of Wireless Sensor Networks in Marine Environment Monitoring: A Survey

Applications of Wireless Sensor Networks in Marine Environment Monitoring: A Survey

A novel double-sided linear generator for wave energy conversion

Design and Optimization of a Novel Dual-Port Linear Generator for Oceanic Wave Energy Conversion

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