Overview of the Alternative Topologies of Linear Generators in Wave Energy Conversion Systems

Kakosimos, Panagiotis; Tsampouris, Evangelos M.; Kimoulakis, N.M.; Kladas, Antonios G.

doi:10.4028/www.scientific.net/msf.721.281

Cited by 4 publications

(3 citation statements)

References 15 publications

(17 reference statements)

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“…Main components for linear generator in WEC application [90] There are several topologies of linear electrical generators, including tubular air-cored permanent magnet generator, transverse flux permanent magnet generator, longitudinal flux permanent magnet generator and octagonal linear generator. There is also a proposed new type of topologies linear generator with skewed mounted permanent magnets [91]. The tubular generator type improved the electromagnetic thrust density caused by the force-to-weight ratio, and the implementation proved experimentally by comparing with flat linear topology [92].…”

Section: Linear Generatormentioning

confidence: 99%

Wave-Activated-Body Energy Converters Technologies: A Review

Yusop

Ibrahim

Jusoh

et al. 2020

ARFMTS

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Ocean wave could convert the resource energy more than half of its potential capacity often over time, compared with wind or solar system, which is less than half of its capacity resource. However, the challenge rises on designing an ocean wave-capturing device that can achieve optimum efficiency. This paper addressed several topics including the overview of existing technology of wave energy converter with emphasis on wave-activated body category, current principle of energy harnessing, types of generators utilised to harness the wave energy and the current technologies of power electronics implemented to ocean wave devices. Wave energy converters (WEC) that are commercialised, under testing and still in prototype stage are all listed and divided into two different categories, namely, submerged and floating on the sea. The results reveal that, compared with submerged WECs, the floating WECs gain more attention for development. The key factor in choosing a float on device is to consider the fabrication cost, environmental impact especially for marine life, design and maintenance issue, installation site and the selection of power takeoff system.

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Section: Linear Generatormentioning

confidence: 99%

Wave-Activated-Body Energy Converters Technologies: A Review

Yusop

Ibrahim

Jusoh

et al. 2020

ARFMTS

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“…In this paper, a TDMA scheduling algorithm for general k-hop networks is proposed, and a detailed performance analysis of the algorithm is performed [13]. The article outlines the different operating principles and various linear generator types, analyzes the advantages and disadvantages, and presents a complete scheme that collects the most important characteristics [14]. This paper introduces the installation method of the towering steel pins on the roof of the PDOC office building in Khartoum, Sudan, and studies the structural response of conventional and diagonal grid buildings to evaluate the structural advantages of the diagonal grid system [15].…”

Section: Introductionmentioning

confidence: 99%

Mechanism and Structural Parameter Optimization Method of Linear Energy-Gathering Cutting Device for Towering Steel Structures Based on Computational Intelligence

Zhou

2022

Wireless Communications and Mobile Computing

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In the process of urban expansion, due to the advantages of high strength and light weight of steel frame structure, it has replaced concrete structure, and the construction technology of towering steel structure has been paid attention to by the construction industry. With the passage of time, steel structure also needs to be removed. In order to adapt to the efficient cutting of steel frame structures, this paper studies a new technology of linear energy-gathering cutting of towering steel structures based on computational intelligence methods. The research results of the article show the following: (1) The greater the penetration depth, the greater the setting of the cutter parameters. According to the experimental results, the designed towering steel structure cutter can smoothly cut more than 10 kinds of towering steel structure materials. It can be seen that the calculation results are basically accurate and the relative error of the calculation remains around 6%. (2) In the computational intelligent analysis method, the total stress is larger than that of the other two analysis methods, and the support stability force is slightly lower than the stress ratio of the direct analysis method, and the computational intelligent analysis method accounts for the largest axial force. (3) The cutting depth and slit width are different at different cutting speeds. When the cutting speed is 8, the cutting depth reaches the maximum value of 1.2300, and 90% of the experimental data errors can be controlled within 10%.

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“…In fact, as a result of the attractive forces, the load on the bearings is large and needs maintenance to operate normally. Due to the principle of operation of the linear generators and the oscillating conditions of ocean waves, these devices are large, which makes their construction more expensive [7,8,[16][17][18][19]. A description of the different technologies of linear generators used for the conversion of wave energy is presented in [9,10].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Characterization of a Liquid Metal MHD Generator for Ocean Wave Energy Conversion

et al. 2021

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Harnessing ocean wave energy is an old challenge that has gained momentum in recent years. In this paper, we present the flow and electrical characterization of a prototype of an alternate liquid metal magnetohydrodynamic (MHD) generator at a laboratory scale which has the potential to make use of the energy of marine waves for its conversion into electrical energy. The eutectic alloy Galinstan, used as a working fluid, was driven in oscillatory motion in a duct of a rectangular cross-section exposed to a transverse magnetic field generated by permanent neodymium magnets. The electric current induced by the motion of the liquid metal in the magnetic field was collected through copper electrodes and delivered to the load. The oscillatory axial velocity component along the duct was measured using ultrasonic Doppler velocimetry for different oscillation frequencies. In turn, the output currents and voltages were measured for different operation conditions and the electric power and efficiency were estimated from experimental measurements. The coupling of this generator to a wave energy converter (WEC) is discussed.

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Overview of the Alternative Topologies of Linear Generators in Wave Energy Conversion Systems

Cited by 4 publications

References 15 publications

Wave-Activated-Body Energy Converters Technologies: A Review

Wave-Activated-Body Energy Converters Technologies: A Review

Mechanism and Structural Parameter Optimization Method of Linear Energy-Gathering Cutting Device for Towering Steel Structures Based on Computational Intelligence

Laboratory Characterization of a Liquid Metal MHD Generator for Ocean Wave Energy Conversion

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