Experimental study on the performance of a floating array-point-raft wave energy converter under random wave conditions

Yang, Shufeng; He, Hongzhou; Chen, Hu; Wang, Yongqing; Li, Hui; Zheng, Songgen

doi:10.1016/j.renene.2019.02.093

Cited by 23 publications

(14 citation statements)

References 17 publications

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“…Furthermore, its large‐area valve‐body arrangement affects the marine ecosystem, and the impact damage issue is also prominent 19 . By contrast, the oscillating‐float wave energy converter contains small‐scale components, 20 low manufacturing cost, high conversion efficiency, 21 and strong environmental resistance 22 . In conclusion, the key to the development of the wave energy converter is to resolve the problems of low efficiency and stability, low safety and reliability, and high cost.…”

Section: Introductionmentioning

confidence: 99%

Research on design and optimization of the pitching float wave energy converter

Yang

et al. 2020

Energy Science & Engineering

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Energy consumption has increased dramatically with the growth of the global economy, 1 resulting in increasing social concern over environmental matters. 2 The emergence and utilization of low-carbon and renewable energy is becoming the focus of energy development. In response to this situation, attention has been directed toward the oceans. 3,4 Wave energy is a major type of marine energy, with total reserves theoretically totaling approximately 3 billion kW. A third of this amount can be developed by technology, and the theoretical electric production is approximately 8000 TWh/y. 5 Different types of wave energy converters have been given considerable practical use to develop and utilize wave energy. The converters can be classified according to their structure, as oscillating-water column, pendulum, contraction wave channel, and raft types. 6

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Section: Introductionmentioning

confidence: 99%

Research on design and optimization of the pitching float wave energy converter

Yang

et al. 2020

Energy Science & Engineering

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“…The WEC converts the relative movement between the buoy and linear generator due to waves into electrical energy. 20 Among all single-body DD-WECs, Archimedes wave swing (AWS) 21 and the prototype proposed by Waters 22 are the most typical. AWS is fully under water, while the PTO system of the prototype proposed by Waters is fixed on the seabed and the buoy floats at the water surface.…”

Section: Introductionmentioning

confidence: 99%

“…The buoy could heave driven by wave along a strut, and a cardan joint attaches the strut to an anchor installed on the sea bed. 20 Zhang et al 23 studied the hydrodynamic features of the single-body system to combine the floating breakwater and the WEC. Li et al 24 proposed a novel PTO system that is the nonlinear spring-damper model to increase the energy conversion efficiency of the single-body system.…”

Section: Introductionmentioning

confidence: 99%

A novel single‐body system for direct‐drive wave energy converter

et al. 2020

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Ocean wave energy has played a key role of the renewable energy. This study presents a novel single-buoy wave energy converter (WEC) with directly driven power takeoff (PTO) system to overcome some difficulties that the PTO system in the conventional single-body direct-drive WEC (DD-WEC) is fully submerged under water and far away from the water surface. A rectangular buoy, a direct-drive PTO system with Halbach permanent magnet linear generator (HPMLG), and slide rails form the chief institutions of the WEC. The translator of the HPMLG is installed on the lateral surface of buoy, and the stator is mounted on the seacoast or the boats and ships. While wave drives the floating buoy to move, a relative movement between the translator and the stator of the HPMLG is caused. Then, the relative movement generates electricity. To explore theoretically its feasibility, the dynamics of the wave and the floating buoy is analyzed in detail. Thus, the structural parameters are analyzed and determined, and load performance is described. Furthermore, the finite element method (FEM) is used to conduct the performance evaluation of the

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“…Zhanhong Wan et al [12] developed a new WEC suitable for wave conditions in Zhoushan sea area. Shaohui Yang et al [13][14][15][16][17] wave energy converter has been designed and experimented by Jimei University, the transmission mode of WEC is very instructive; reliability assessment of point-absorber wave energy has been converted by Cranfield University and the reliability assessment framework has been developed; an adaptive bistable power capture mechanism to a point absorber WEC has been proposed by Shanghai Jiao Tong University, These inventors are innovative for us and we have a better understanding of the point-absorber WECs and they are experience with installation experiments. In Ref.…”

Section: Introductionmentioning

confidence: 99%

A New Energy Recovery Device by Utilizing the Merchant Ship Rolling

Zhang

et al. 2020

IEEE Access

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Wave energy is a renewable clean and resources for ships. According to the rolling characteristics of merchant ships, this research designs an energy recovery device installed on the ship deck to harvest the energy generated by waves. And a typical 50,000-ton ship is selected as the experimental platform of the device. The mathematical model is established and solved by Newmark-β method, and a simulation platform is built in MATLAB. By simulating the movement of the slider in the device, it shows that the slider can realize reciprocating motion when the ship rolls continuously. Then, the relevant parameters in different combinations of natural frequency and damping ratio ε are calculated, the power output of the device and the motion law of the slider are analyzed, and parameters' variable curves are drawn in figures. A reasonable combination of =1.225 Hz, ε =0.0612 and a relatively ideal average power (174.11 W) are found by comparing amounts of simulated results from typical sea conditions. It is indicated that four main factors affecting the power generation of the device include the elasticity coefficient K, effective damping coefficient C in the device, the ship rolling period and rolling angle. Besides, the device can still output power continuously by simulation in complex sea condition. Based on the research, it is proved that the device mentioned in this study has good feasibility in generating electric energy during ship rolling, which can provide valuable ideas for the application of wave energy in ships on voyage.

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Experimental study on the performance of a floating array-point-raft wave energy converter under random wave conditions

Cited by 23 publications

References 17 publications

Research on design and optimization of the pitching float wave energy converter

Research on design and optimization of the pitching float wave energy converter

A novel single‐body system for direct‐drive wave energy converter

A New Energy Recovery Device by Utilizing the Merchant Ship Rolling

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