High-performance piezoelectric wind energy harvester with Y-shaped attachments

Wang, Junlei; Zhou, Shengxi; Zhang, Zhien; Yurchenko, Daniil

doi:10.1016/j.enconman.2018.12.034

Cited by 410 publications

(142 citation statements)

References 48 publications

Supporting

Mentioning

142

Contrasting

Order By: Relevance

“…We show that this new adapter can increase the efficiency of the energy harvesting system by a factor of more than 5 at the low-frequency range (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). We show that this new adapter can increase the efficiency of the energy harvesting system by a factor of more than 5 at the low-frequency range (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20).…”

Section: Introductionmentioning

confidence: 89%

“…For the first time, we are proposing a new intermediate auxetic element for boosting the vibration energy extraction efficiency specifically for the bending applications. We show that this new adapter can increase the efficiency of the energy harvesting system by a factor of more than 5 at the low-frequency range (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). This novel concept allows us to use cantilever type resonators at frequencies much lower than their resonant frequencies.…”

Section: Introductionmentioning

confidence: 97%

“…In general, there are three potential strategies for the vibration energy extraction, namely, triboelectric, [10][11][12] electromagnetic, [13][14][15] and piezoelectric [16][17][18][19] energy harvesting. In high-frequency range, piezoelectric materials with the ability to extract large electrical potential from Correction added on 25 November 2019, after first online publication: the third author's surname has been corrected in this version of the article.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancement of piezoelectric vibration energy harvesting with auxetic boosters

2019

View full text Add to dashboard Cite

This paper proposes a new concept to enhance the efficiency of the vibration energy harvesting via an intermediate booster. The boosters have auxetic struc-tures and exert extra stretching strain in two perpendicular directions. The concept is tested on a conventional cantilever beam under the base excitation. The problem consists of a cantilever beam subjected to a body load at low frequencies. An auxetic substrate is bonded to the beam with a thin epoxy layer, and the piezoelectric (PZT) element is attached on top of it. Two different auxetic structures are investigated in this study. It is shown that employing these kinds of boosters can remarkably enhance the performance of the energy harvesting system. The harvesting efficiency is numerically evaluated in different load amplitudes and frequencies. A parametric study is then carried out, and effects of different geometrical design parameters of the auxetic boosters on the performance of the energy harvesting system are investigated. Comparing with the case in which the PZT is straightly attached to the cantilever, it is shown that adding such intermediate boosters at low-frequency range can increase the extracted power by factors of 3.9 and 7.0 for the two proposed geometries.

show abstract

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement of piezoelectric vibration energy harvesting with auxetic boosters

2019

View full text Add to dashboard Cite

show abstract

“… C p is the capacitance measured experimentally, and I represents the current flowing into the interface circuit. θ is the electromechanical coupling coefficient which could be calculated by

θ = \sqrt{((), ω_{noc}^{2} - ω_{nsc}^{2}) m C_{p}},

where ω noc and ω nsc are the resonant frequencies of the system under open and short‐circuit conditions, respectively.

({, \begin{matrix} m = \frac{33}{140} m_{1} + m_{2} \\ c = 2 m ω_{nsc} ζ \\ k = m ω_{nsc}^{2} \end{matrix}) .

…”

Section: Modelingmentioning

confidence: 99%

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

et al. 2020

Self Cite

View full text Add to dashboard Cite

Summary Small‐scale wind energy harvesting from vortex‐induced vibrations (VIV) has been introduced in recent years as a renewable power source for microelectronics and wireless sensors. Previous studies have focused on modeling and optimizing the VIV‐based piezoelectric energy harvester (VIVPEH) structures and simplified the complicated interface circuits as pure resistors with an alternating current (AC) output. In practice, an AC output is required to be transformed into a direct current (DC) followed by further regulations before being used for real applications. Incorporating the rectification and regulation, traditional theoretical and numerical models will become extremely cumbersome and even impossible. To address this issue, this work proposes an equivalent circuit model (ECM) for a typical VIVPEH. The Scanlan‐Ehsan aerodynamic force model is employed to describe the fluid‐structure interaction. Wind tunnel experiments are carried out to validate the derived model. The performances of the VIVPEH with AC and DC interface circuits are subsequently analyzed and compared to understand the influences of these circuits on the operational wind speed bandwidth, power output, vibration amplitude, and electrical damping.

show abstract

“…Nevertheless, as a destructive phenomenon in the engineering structure for a long time, vortex-induced vibration requires a nonlinear bluff body structure such as a cylinder of smooth surface. In engineering, when the fluid flows through the surface of the bluff body [18][19][20], the flow will separate on the surface of the bluff body at the same time, and then the vortex begins to shed alternately around the bluff body under the action of the shear layer, thus generating periodic fluid force which will act on the surface of the cylinder. The bluff body begins to oscillate 2 Complexity when the frequency of the vortex shedding corresponds to the natural frequency of the elastic structural oscillations.…”

Section: Introductionmentioning

confidence: 99%

Design, Modeling, and Experiments of the Vortex-Induced Vibration Piezoelectric Energy Harvester with Bionic Attachments

Jin

Wang

et al. 2019

Complexity

Self Cite

View full text Add to dashboard Cite

Since the energy demand increases, the sources of fluid energy such as wind energy and marine energy have attracted widespread attention, especially vortex-induced vibrations excited by wind energy. It is well known that the lock-in effect in vortex-induced vibration can be applied to the piezoelectric energy harvester. Although numerous researches have been conducted on piezoelectric energy harvesting devices in recent years, a common problem of low bandwidth and harvesting efficiency still exists. In order to increase the response amplitude and decrease the threshold wind speed of vortex-induced vibration, a bionic attachment structure is proposed based on the experimental method. In the present work, twelve models are designed according to the size of pits and hemispheric protrusions which are added to the surface of a flexible smooth cylinder. Compared with the smooth cylinder which is taken as a carrier, the harvester with the bionic structure shows stronger energy capture performance on the whole. As the threshold speed decelerates from 1.8m/s to 1 m/s, the bandwidth, on the contrary, increases from 39.3% to 51.4%. Particularly, for the 10 mm pits structure with 5 columns, its peak voltage can reach 47 V, and its peak power can reach 1.21 mW with a resistance of 800 kΩ, 0.57 mW higher than that of the smooth cylinder. Comparatively speaking, the hemispherical projections structure figures with a much more different energy capturing characteristic. Starting from the column, the measured voltage of the hemispherical bionic harvester is much smaller than that of the smooth cylinder, with a peak voltage less than 15 V and a reducing bandwidth. However, compared with the smooth cylinder, hemispheric projections with 3 columns have a better energy capture effect with a measured voltage of 35V, a resistance of 800kΩ, and a wind speed of 3.097 m/s. Besides, its output power also enhances from 0.48 to 0.56 mW.

show abstract

High-performance piezoelectric wind energy harvester with Y-shaped attachments

Cited by 410 publications

References 48 publications

Enhancement of piezoelectric vibration energy harvesting with auxetic boosters

Enhancement of piezoelectric vibration energy harvesting with auxetic boosters

Equivalent circuit representation of a vortex‐induced vibration‐based energy harvester using a semi‐empirical lumped parameter approach

Design, Modeling, and Experiments of the Vortex-Induced Vibration Piezoelectric Energy Harvester with Bionic Attachments

Contact Info

Product

Resources

About