Design of MEMS-based cantilever-type piezoelectric energy harvester for low frequency vibrations

Choudhary, Anita; Saxena, Shanky

doi:10.1016/j.matpr.2020.05.180

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Another challenge PEHs face is harvesting energy in lowacceleration environments while providing sufficient power for practical applications. The output power of PEHs can be enhanced by developing new piezoelectric materials [4] and optimizing the piezoelectric layer [11], electrodes [12], and structure [13][14][15][16][17][18][19]. The output power depends on the mechanical stress distribution along the cantilever structure.…”

Section: Introductionmentioning

confidence: 99%

Multimode auxetic piezoelectric energy harvester for low-frequency vibration

He,

Kurita,

Narita

2024

Smart Mater. Struct.

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Herein, we propose a piezoelectric energy harvester (PEH) capable of vibrating in multi-degrees-of-freedom. The resonant frequency, working bandwidth, and output power of the PEH were improved by introducing an auxetic structure (AS). The proposed PEH exhibited a symmetric serpentine structure with a doubly clamped configuration comprising several proof masses at the junctions. Finite element method simulation was conducted to investigate the characteristics of an AS PEH and a plain-structure PEH. Prototypes of the PEHs were manufactured by three-dimensional printing technology, and their performance was evaluated through vibrational energy-harvesting experimental tests. The results showed that introducing the AS reduced the first and second resonant frequencies by 49% and 44%, respectively, considerably improved the output power in the first mode (up to 2548%) and narrowed the frequency bandgap between the first two resonance modes by 29%. The proposed multimode AS PEH can operate in a low-frequency environment of less than 20 Hz. Finally, we discussed several ways of optimizing the AS. It has been found that the PEH performance could be further improved by selecting a reasonable thickness for the AS, increasing the number of periodic unit cells, and using an AS with a variable cross-section unit cell.

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Section: Introductionmentioning

confidence: 99%

Multimode auxetic piezoelectric energy harvester for low-frequency vibration

He,

Kurita,

Narita

2024

Smart Mater. Struct.

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“…Based on the PEH, various vibration sources have been applied to scavenging energy, such as wind-induced vibration [31][32][33], water-induced vibration [34,35], and base excitation [36][37][38]. Therein, wind energy has been considered the most promising green energy source because of its wide availability.…”

Section: Introductionmentioning

confidence: 99%

Modeling and experimental investigation of asymmetric distance with magnetic coupling based on galloping piezoelectric energy harvester

Zhang¹,

Zhang²,

Wang³

et al. 2022

Smart Mater. Struct.

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This paper presents an asymmetric magnetic coupling piezoelectric energy harvester based on galloping to scavenge low-speed wind. The piezoelectric beam of energy harvester undergoes bending and torsional vibration simultaneously due to the eccentric distance. By analyzing the kinetic energy, potential energy, and virtual work of the energy harvesting system, the mathematical model of harvester is constructed and verified by experiments. The optimal external load resistance is confirmed at different eccentric distances and wind speeds by experiments. Compared with traditional galloping piezoelectric energy harvester, the asymmetric with magnetically coupling galloping piezoelectric energy harvester has a lower threshold wind speed, i.e. 2 m/s. And the asymmetric configuration contributes to a lower natural frequency and electromechanical coupling coefficient, which results in a lower power and voltage output. The potential energy of harvesting systems at different distances between two magnets are respectively numerical analyzed in detail. The theorical results illustrate that the energy harvester operates in monostable and bistable at different magnet distances. And the threshold wind speed of energy harvester increases when the energy harvester works at bistable. According to the above analysis, this work provides a detailed guideline for mathematical modeling and performance improvement of asymmetric piezoelectric energy harvester based on galloping.

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Design and Simulation of L-shaped Piezoelectric Energy Harvester for Pacemaker Application

Ahmed,

Chowdhury

2023

2023 6th International Conference on Electrical Information and Communication Technology (EICT)

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Design of MEMS-based cantilever-type piezoelectric energy harvester for low frequency vibrations

Cited by 3 publications

References 14 publications

Multimode auxetic piezoelectric energy harvester for low-frequency vibration

Multimode auxetic piezoelectric energy harvester for low-frequency vibration

Modeling and experimental investigation of asymmetric distance with magnetic coupling based on galloping piezoelectric energy harvester

Design and Simulation of L-shaped Piezoelectric Energy Harvester for Pacemaker Application

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