Design and experimental investigation of a magnetically coupled vibration energy harvester using two inverted piezoelectric cantilever beams for rotational motion

Zou, Hong‐Xiang; Zhang, Wen Ming; Li, Wenbo; Wei, Kexiang; Gao, Qiu‐Hua; Meng, Guang

doi:10.1016/j.enconman.2017.07.005

Cited by 175 publications

(53 citation statements)

References 25 publications

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“…13 which is suited for low speed rotation. The average output power output for the first piezoelectric flag is 564 microWatts and for the latter one 535.3 microWatts [50]. [53,54].…”

Section: Cantilever Beam Configurationmentioning

confidence: 99%

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Performance improvement of piezoelectric materials in energy harvesting in recent days – a review

Varadha¹,

Rajakumar²

2018

J. vibroeng.

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Piezoelectric elements are inevitable in modern day physics playing a vital role in many applications. Any piezoelectric element requires compression to produce energy in the form of a weak electrical ac signal. Mechanical vibrations are known to cause deflections which are enough to produce energy from the piezoelectric materials. In this paper, a review of the piezoelectric materials is made on their basic modes of excitation for producing energy. Also, various mechanisms and techniques used to harvest energy recently are presented and discussed extensively. Piezoelectric energy harvesting using MEMS is emphasized much as this is the era of micromechanical systems. Most of the piezoelectric energy harvesting systems relies on cantilever-oriented deflection to produce maximum vibration. In general cantilever beams fitted with piezoelectric materials produce electrical energy from mechanical vibration when deflected; hence detailed review on the different shapes of cantilever is also submitted. Significant parameters contributing to improved performance are dealt with special importance.

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“…13 which is suited for low speed rotation. The average output power output for the first piezoelectric flag is 564 microWatts and for the latter one 535.3 microWatts [50]. [53,54].…”

Section: Cantilever Beam Configurationmentioning

confidence: 99%

“…13. Schematic diagram of magnetically coupled energy harvester using two inverted piezoelectric cantilever beams [50]…”

Section: Cantilever Beam Configurationmentioning

confidence: 99%

Performance improvement of piezoelectric materials in energy harvesting in recent days – a review

Varadha¹,

Rajakumar²

2018

J. vibroeng.

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“…The other type of rotational energy harvesting is to mount a PEH on a horizontal rotating hub. As the hub rotates, the direction of the gravitational force varies with respect to the hub to excite the PEHs [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. Although the excitation force caused by the gravity under rotational motion is similar to that caused by rectilinear excitations, the centrifugal force may affect the mechanical characteristics of the rotational PEHs.…”

Section: Introductionmentioning

confidence: 99%

“…Bistable PEHs consisting of a piezoelectric cantilever beam and a pair of magnets were presented for rotational motion and showed the capability of broadband harvesting [38][39][40][41]. Zou et al [42] developed a rotational PEH that consisted of two beams coupled by magnetic force to improve the bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion

Lin

2020

Sensors

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This paper investigates a piezoelectric energy harvester that consists of a piezoelectric cantilever and a tip mass for horizontal rotational motion. Rotational motion results in centrifugal force, which causes the axial load on the beam and alters the resonant frequency of the system. The piezoelectric energy harvester is installed on a rotational hub in three orientations—inward, outward, and tilted configurations—to examine their influence on the performance of the harvester. The theoretical model of the piezoelectric energy harvester is developed to explain the dynamics of the system and experiments are conducted to validate the model. Theoretical and experimental studies are presented with various tilt angles and distances between the harvester and the rotating center. The results show that the installation distance and the tilt angle can be used to adjust the resonant frequency of the system to match the excitation frequency.

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“…Nonlinear energy harvesters 28,29 , typically relying on multistable motions of a beam or plate 30,31 , are capable of achieving wide-working bandwidths 26,[32][33][34] . The principle of using multistable motions to broaden working bandwidths is that dynamic behavior, reflected directly in the amplitudes of vibration, is improved at nonresonant frequencies.…”

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confidence: 99%

Poly-stable energy harvesting based on synergetic multistable vibration

Deng

Wang

et al. 2019

Commun Phys

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Distributed energy sources, for example the ambient broadband vibrations, are of great importance for the development of the Internet of Things. However, for multistable vibrational energy harvesters, increasing the number of stable equilibrium states to broaden working frequency bands is very difficult. Here we present a poly-stable vibrational energy harvesting approach capable of achieving an exponentially growing maximum number of stable equilibrium states. Unlike the traditional multistable harvesters relying on an external static magnetic field, the nonlinear dynamical behaviours achieved by the proposed approach are synergetic poly-stable motions without the need of external magnets. Comparison experiments in contrast with a linear harvester demonstrate the working bandwidth widened by a factor of 41.0, the power density increased to 760% and the electricity generation raised to 178%. This demonstration of new multistable energy harvester expands the approach to achieving multistable motion and provides a new design philosophy for nonlinear vibrational energy harvesters.

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Design and experimental investigation of a magnetically coupled vibration energy harvester using two inverted piezoelectric cantilever beams for rotational motion

Cited by 175 publications

References 25 publications

Performance improvement of piezoelectric materials in energy harvesting in recent days – a review

Performance improvement of piezoelectric materials in energy harvesting in recent days – a review

Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion

Poly-stable energy harvesting based on synergetic multistable vibration

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