A study on a near‐shore cantilevered sea wave energy harvester with a variable cross section

Zhang, Jinfeng; Xie, Xiangdong; Song, Gangbing; Du, Guanglong; Liu, Dezheng

doi:10.1002/ese3.489

Cited by 19 publications

(3 citation statements)

References 56 publications

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“…On the basis of the obtained results, it was confirmed that the most optimal cantilever section is the conical section, which significantly increases the efficiency of the structure. The modification of the cantilever harvester to obtain energy from the motion of sea waves is presented in [8]. A mathematical model was created through the Airy wave theory and the Bessel equations to calculate the stored power and the output charge.…”

Section: Vibration Problems In Electromechanical Energy Harvestingmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Garus,

Błachowski,

Sochacki

et al. 2022

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Although the study of oscillatory motion has a long history, going back four centuries, it is still an active subject of scientific research. In this review paper prospective research directions in the field of mechanical vibrations were pointed out. Four groups of important issues in which advanced research is conducted were discussed. The first are energy harvester devices, thanks to which we can obtain or save significant amounts of energy, and thus reduce the amount of greenhouse gases. The next discussed issue helps in the design of structures using vibrations and describes the algorithms that allow to identify and search for optimal parameters for the devices being developed. The next section describes vibration in multi-body systems and modal analysis, which are key to understanding the phenomena in vibrating machines. The last part describes the properties of granulated materials from which modern, intelligent vacuum-packed particles are made. They are used, for example, as intelligent vibration damping devices.

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Section: Vibration Problems In Electromechanical Energy Harvestingmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Garus,

Błachowski,

Sochacki

et al. 2022

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“…Wind-driven harvesters, in contrast to other harvesters, would not require a large land area due to their vertical design, − making them easy to install in areas such as high terrain, mountains, − and coastal areas. , Prevailing wind speed at a height of 80 m above-ground is greater than 6.9 m/s . Energy harvesting from wind close to the ground has various uses but has the disadvantages of being highly influenced by geography and weather as well as having a low output due to low wind speed.…”

Section: Introductionmentioning

confidence: 99%

Flexible Cube-Shaped PTFE-Based Triboelectric Nanogenerator for Improving Wind Energy Harvesting Output

Jang,

Yang,

Sim

2023

ACS Appl. Electron. Mater.

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This study presents a newly developed wind-driven triboelectric nanogenerator (WD-TENG) using flexible cube polytetrafluoroethylene (PTFE) to improve harvesting energy in four directions. The flexible cube-shaped PTFE was made with a deformable surface that allowed for a larger contact area during triboelectricity. When the wind was introduced into the cylinder structure, the cube-shaped PTFEs were rotated by the force of the wind and generated electricity through contact and separation with aluminum (Al) attached to the inner wall of the cylinder. As a result, the flexible cube-shaped PTFE-based WD-TENG increased the output performance by up to 25.1% compared with the WD-TENG using the stiff cube-shaped PTFEs. It was observed that the output value exhibited a linear relationship with respect to changes in wind speed in both cube types. The number of illuminated LEDs demonstrated that the wind, applied from four different directions, yielded comparable power outputs regardless of the direction of wind.

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“…The research results prove that the triangular cantilever substrate with a central triangular hole is the optimal structure style to collect more energy in a wider low‐frequency vibration environment. Zhang et al 40 proposed a piezoelectric coupling energy collector of a variable cross‐section cantilever to harvest offshore wave energy. Xie et al 41 developed a tapered cantilever piezoelectric energy harvester which has a higher efficiency of energy harvesting than the existing rectangular cantilever.…”

Section: Introductionmentioning

confidence: 99%

An investigation on an absorber working through piezoelectric conversion mechanism

Zhang

Xie

Zhang

et al. 2021

Energy Science & Engineering

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A novel absorber, which is equivalent to a spring and a damper, is developed and the corresponding equivalent formulae of stiffness coefficient and damping coefficient are derived. The key component of the absorber is the circular array of multi‐section U‐shaped piezoelectric coupled beams (MUPCBs) which can alleviate harmful vibration of various devices by converting the vibration energy into electrical energy. As an example, the absorber is used in a quarter vehicle suspension system, and its properties of energy harvesting and vibration attenuation are studied using the computational model of dual‐mass iteration method. The dual‐mass model includes two sprung masses (body mass and wheel mass) which are linked by the absorber. The effects of some important factors, such as the piezoelectric coupling section (PCS) length, the PCS substrate thickness, the force arm length of the MUPCB, the speed of vehicle and the class of road surface on the root mean square (RMS) of the output power, are discussed. The research results show that half of the amplitude of the harmful vibration can be attenuated and a power up to 254.3 W can be realized by the absorber made of MUPCBs in the quarter vehicle suspension computational case. This research provides a feasible piezoelectric absorber suitable for various devices by transferring the vibration energy into electricity to attenuate the harmful vibration and achieve the energy recycling application.

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A study on a near‐shore cantilevered sea wave energy harvester with a variable cross section

Cited by 19 publications

References 56 publications

Bulletin of the Polish Academy of Sciences: Technical Sciences

Bulletin of the Polish Academy of Sciences: Technical Sciences

Flexible Cube-Shaped PTFE-Based Triboelectric Nanogenerator for Improving Wind Energy Harvesting Output

An investigation on an absorber working through piezoelectric conversion mechanism

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