Wave energy technology in China

You, Yan; Sheng, Songwei; Wu, Botao; He, Yanli

doi:10.1098/rsta.2011.0154

Cited by 16 publications

(9 citation statements)

References 1 publication

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“…Wavestar, Pico Plant and Mutriku, have provedand documentedthey can produce useful energy from the waves, with the following values for accumulated electricity production: Wavestar 53.5 MWh (up to December 2012) (Kramer et al, 2013), Pico 52 MWh (WavEC, 2012) and Mutriku 200 MWh (Section IV.1). OE Buoy and Wave Dragon have survived to the harsh sea environments for more than two or three winters (Nielsen, 2012), while othersthe 5 to 20 kW Chinese floating OWCshave done it for a larger number of years (You et al, 2012). Wave Dragon has also proved a wave-to-wire efficiency of 18%, i.e.…”

Section: Ii1 Introduction To Wave Energymentioning

confidence: 99%

Technical and Non-Technical Issues towards the Commercialisation of Wave Energy Converters

Chozas

2013

Technical and Non-Technical Issues Towards the Commercialisation of Wave Energy Converters

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The thesis "Technical and non-technical issues towards the commercialisation of wave energy converters" elaborates on the necessary steps and on the different difficulties that appear during the development of a wave energy converter (WEC). It focuses on seven key areas which appear when a WEC is going through sea trials. As examined throughout the thesis, all these subjects are of relevance to successfully reach the commercialisation of WECs and need attention from the sector as such, not least from device developers. The thesis is presented in two parts: a main introduction and a collection of papers. The first part provides a brief history of wave energy, introduces the research topic, describes the different disciplines addressed in the thesis and relates them. The eight papers comprise the core part of the work. The papers address the research topic in different ways: from a legal, social, technical and economic viewpoint, and from various WEC development stages. All the analyses are carried out from the perspective of device developers. xi Acknowledgments I would like to gratefully acknowledge the invaluable help from the following people and research groups throughout these years of knowledge, experiences and learning. To Spok ApS, especially to Hans and to Lise, for trusting me, for their warm welcome in Denmark, for their help and for their continuous support; my most sincere thank you to Hans for his commitment, his fruitful comments and advices, his mentorship and his diligent guide during these years. To the Wave Energy Research Group at Aalborg University for providing the opportunity of teaching and sharing my enthusiasm for wave energy with a wide variety of students, for their approach of learning by experience and for having an open-used wave tank. I would like to personally thank Jens Peter for his wise observations, constructive discussions, guidance and support in the PhD; and John for his helpful corrections and precious time. To the Wave Dragon team, particularly to Erik, for his moral of company openness and sincerity, for sharing his priceless knowledge, for his valuable remarks, for his guidance throughout the wave energy world, and for making the dark Danish winters a bit brighter and colourful. My thankful acknowledge to Energinet.dk and PSO project 10791, and to Niels Ejner for his continuous support and collaboration.

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Section: Ii1 Introduction To Wave Energymentioning

confidence: 99%

Technical and Non-Technical Issues towards the Commercialisation of Wave Energy Converters

Chozas

2013

Technical and Non-Technical Issues Towards the Commercialisation of Wave Energy Converters

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“…(e) the WEC FO3 design concept [154], (f) the Wave Star concept model [155], (g) Langlee Wave Power WEC [156], (h) the Power Resonator device concept [157], (i) PS Frog WEC [43], (j) SEAREV principle illustration [102], (k) WaveNet conceptual model [158], (l) Wave Roller design model [159], (m) Onshore Oscillating Buoy concept [141], (n) Wavebob working mechanism [160], (o) Pelamis WEC design [161], (p) Duck wave energy view [162], (q) Sharp Eagle device concept [163], (r) CCell prototype [164], (s) BioWave design [165], (t) WEC Triton concept [166], (u) Azura WEC deployed at sea [167], and (v) DEXA WEC system [168].…”

Section: Kw 14lmentioning

confidence: 99%

A Critical Review of Power Take-Off Wave Energy Technology Leading to the Conceptual Design of a Novel Wave-Plus-Photon Energy Harvester for Island/Coastal Communities’ Energy Needs

et al. 2022

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As the global interest in renewable energy generation continues, the need to develop new and innovative solutions is being explored every day throughout the world by researchers and innovators. Hybrid renewable energy innovations are gaining progressive interest not only because of the threat of climate change but also due to the technological advancements seen in renewables. Ocean waves have immense potential as a renewable energy source, and related technologies have advanced continuously over the past few decades. In response, this paper extensively studies wave energy converters (WECs) based on the power take-off (PTO) technique, and presents a novel hybrid wave-plus-photon energy (HWPE) harvester called Wavevoltaics, based on wave and solar energy capture systems for coastal communities’ power needs, in line with decarbonization measures. The HWPE harvester uses a simple rack-and-pinion mechanism in combination with solar cell technology to convert the wave energy into usable electrical energy in a water column structural design. This novel HWPE device can be used to provide power for lighting and gadgets for coastal communities that rely heavily on fossil fuels for their lighting and electrical needs. Later in the paper, the challenges faced in hybrid wave energy development are presented.

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“…e freedom of floating body oscillation determines the upper limit of its capture width. For a vertical axisymmetric floating body, the oscillation attitude is different, and the maximum capture width is different [8,10]. Zheng et al [11] studied and compared the variation of energy capture characteristics of three types of floats with different configurations, i.e., the upper cylinder of the bottom hemisphere, the wedge-shaped vertical surface of the elliptical flat section, and the wedge-shaped vertical surface of the rectangular flat section, as well as the period and direction of the incident wave.…”

Section: Introductionmentioning

confidence: 99%

Electromechanical Model of Coupling Spring Piezoelectric Oscillator with Loading

Chen

Song

2020

Mathematical Problems in Engineering

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The paper studies the influence of piezoelectric materials and structural parameters on the electromechanical conversion characteristics of the piezoelectric vibrator. Employing the mechanical theory of Euler–Bernoulli beam, the mechanical vibration and circuit balance equation are obtained about the single-step variable cross-section bimorph piezoelectric vibrator under the condition of external resistance, and the analytical equations are derived for the displacement, output voltage, and conversion efficiency of the piezoelectric vibrator excited by near natural frequency simple harmonic support. The validity of the theoretical model is verified by vibration test. Theoretical analysis and experimental results show that the mechanical and electrical conversion efficiency of the piezoelectric vibrator is the highest when the circuit impedance is matched, and the mechanical and electrical conversion efficiency of the piezoelectric vibrator is determined by the resistance ratio caused by mechanical and electrical coupling after resistance optimization.

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Wave energy technology in China

Cited by 16 publications

References 1 publication

Technical and Non-Technical Issues towards the Commercialisation of Wave Energy Converters

Technical and Non-Technical Issues towards the Commercialisation of Wave Energy Converters

A Critical Review of Power Take-Off Wave Energy Technology Leading to the Conceptual Design of a Novel Wave-Plus-Photon Energy Harvester for Island/Coastal Communities’ Energy Needs

Electromechanical Model of Coupling Spring Piezoelectric Oscillator with Loading

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