Potential of coupled array harvester in enhanced energy harvesting DOI
Srimanta Lal De, Shaikh Faruque Ali

Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, Journal Year: 2024, Volume and Issue: 382(2281)

Published: Sept. 9, 2024

Harvesting energy from nonlinear systems has been at the centre of research in harvesting community. Many such proposed are single harvester. While these show an increase bandwidth frequency, overall, they not effective enough power generation. This article studies and frequency characteristics array harvesters. Multiple harvesters considered with linear coupling between The phenomena internal resonance (IR) stochastic (SR) reported. IR multiple coupled is explored using multiple-scale analysis. A parametric study conducted to demonstrate effect strength, mistuning, innate nonlinearity other parameters. helped establish ways bandwidth. Moreover, a stochastically loaded linearly bistable harvester numerically analysed find strength size on phenomenon SR system’s performance. Through studies, potential enhanced demonstrated under both harmonic excitation. part theme issue ‘Celebrating 15th anniversary Royal Society Newton International Fellowship’.

Language: Английский

A novel dual piezoelectric-electromagnetic energy harvester employing up-conversion technology for the capture of ultra-low-frequency human motion DOI Creative Commons
Ge Shi, Xing Liang, Yinshui Xia

et al.

Applied Energy, Journal Year: 2024, Volume and Issue: 368, P. 123479 - 123479

Published: May 21, 2024

As the realm of smart wearable electronic devices undergoes continuous evolution, tapping into energy generated by everyday human movement presents a compelling alternative to conventional batteries for powering these devices. However, harvesting face limitations in capturing from ultra-low frequency mechanical excitation. This paper proposes novel dual piezoelectric-electromagnetic harvester (DHEH). The DHEH consists two PZTs comprising piezoelectric unit (PEH), arc-shaped driving magnets, and sets coils constituting electromagnetic (EMEH). magnet facilitates coupling between units, serving generate relative motion with triggering operation PZTs. excitation magnets can penetrate completely. Meanwhile, employing repelling orientation effectively enhance power generation efficiency EMEH. Experimental findings indicate that under an external 2 Hz acceleration 0.6 g, optimal load resistance Piezoelectric Energy Harvester (PEH) is 80 kΩ, yielding maximum output 0.306 mW. For EMEH, best-matched 96 Ω, resulting 10.65 mW, density 86.3 μW/cm3. Compared non-hybrid solution, adopting hybrid approach increases PEH approximately 23-fold. Furthermore, hand-shaking tests reveal fabricated prototype common portable devices, demonstrating its significant potential practical applications.

Language: Английский

Citations

10
A method to enhance the nonlinear magnetic plucking for vibration energy harvesters DOI Creative Commons
Michele Rosso, Simone Cuccurullo,

Filippo Pietro Perli

et al.

Meccanica, Journal Year: 2024, Volume and Issue: 59(9), P. 1577 - 1592

Published: Aug. 2, 2024

Abstract In this work, a technique to improve the magnetic plucking for frequency up-conversion in piezoelectric energy harvesters is presented. The involves shielded magnets with Neodymium-iron-boron alloy polarized opposite direction on main magnet. phenomenon investigated both at computational and experimental level. Subsequently, simulations mesoscale harvester are presented which demonstrate gain of 17 times if comparison classical (i.e. without shielding). finds useful applications benefits field low-speed low-frequency vibration harvesting, as well actuation sensing.

Language: Английский

Citations

5
A novel cut-out piezoelectric beam with limiters for broadband energy harvesting DOI

Junchao Li,

Xiaofang Zhang,

Wen‐An Jiang

et al.

International Journal of Non-Linear Mechanics, Journal Year: 2024, Volume and Issue: unknown, P. 104919 - 104919

Published: Oct. 1, 2024

Language: Английский

Citations

4
Passive Frequency Tuning of Kinetic Energy Harvesters Using Distributed Liquid-Filled Mass DOI Creative Commons
Rahul Adhikari, Nathan Jackson

Actuators, Journal Year: 2025, Volume and Issue: 14(2), P. 78 - 78

Published: Feb. 7, 2025

Micro-scale kinetic energy harvesters are in large demand to function as sustainable power sources for wireless sensor networks and the Internet of Things. However, one challenges associated with them is their inability easily tune frequency during manufacturing process, requiring devices be custom-made each application. Previous attempts have either used active tuning, which consumes power, or passive that increase footprint, thus decreasing density. This study involved developing a novel method does not alter device footprint It creating proof mass an array chambers cavities can individually filled liquid overall well center gravity. The resonant rectangular cantilever then altered by changing location, density, volume liquid-filled mass. resolution enhanced increasing number chambers, whereas tuning range increased amount density liquids fill cavities. A piezoelectric 340 Hz initial was testing device. Liquids varying (silicone oil, sodium polytungstate, Galinstan) were investigated. frequencies measured experimentally filling various these determine resolution. ranges first mode 142–217 Hz, 108–217 78.4–217 silicone Galinstan, respectively, sub

Language: Английский

Citations

0
Theoretical Analysis and Experimental Verification of 2-DOF Linkage Piezoelectric Energy Harvesting DOI Creative Commons
Yuanyuan Song,

H.S. Nan,

Ran Zhou

et al.

Actuators, Journal Year: 2025, Volume and Issue: 14(2), P. 82 - 82

Published: Feb. 9, 2025

In the process of energy harvesting, vibration harvesting still has several disadvantages, including a high-threshold excitation and narrow working bandwidth. Therefore, 2-degrees-of-freedom piezoelectric harvester is proposed. By introducing nonlinear magnetic force to system, bandwidth energy-harvesting efficiency three magnetically coupled cantilever beams can be effectively improved. this paper, mathematical model consisting electrically beam systems established, governing equations electric coupling are solved numerically verified experimentally. The dynamic characteristics under different excitations frequencies studied. experiment shows that increased by controlling distance between pairs circular magnets changing frequency induce resonance. Thus, self-power requirement micro-power devices realized. Overall, study provides promising solution for improving performance harvesters offers theoretical insights designing vibrating harvesters.

Language: Английский

Citations

0
Harvesting vibration energy by quad-stable piezoelectric cantilever beam: Modeling, fabrication and testing DOI
amin nadertehrani, Saeed Ziaei‐Rad,

Reza Eshtehardiha

et al.

European Journal of Mechanics - A/Solids, Journal Year: 2024, Volume and Issue: 107, P. 105389 - 105389

Published: Sept. 1, 2024

Language: Английский

Citations

3
Design and Analysis of Piezoelectric Energy Harvester for Wireless Sensor Networks DOI

C. V. Ravikumar,

K. Sathish,

Chunhua Su

et al.

Lecture notes in computer science, Journal Year: 2024, Volume and Issue: unknown, P. 239 - 254

Published: Oct. 17, 2024

Language: Английский

Citations

2
A stochastic averaging mathematical framework for design and optimization of nonlinear energy harvesters with several electrical DOFs DOI Creative Commons
Kailing Song, Michele Bonnin, Fabio L. Traversa

et al.

Communications in Nonlinear Science and Numerical Simulation, Journal Year: 2024, Volume and Issue: 139, P. 108306 - 108306

Published: Aug. 30, 2024

Energy harvesters for mechanical vibrations are electro-mechanical systems designed to capture ambient dispersed kinetic energy, and convert it into usable electrical power. The random nature of vibrations, combined with the intrinsic non-linearity harvester, implies that long, time domain Monte-Carlo simulations required assess device performance, making analysis burdensome when a large parameter space must be explored. Therefore simplified, albeit approximate, semi-analytical technique is paramount importance. In this work we present methodology design nonlinear piezoelectric energy vibrations. based on application model order reduction, project dynamics onto lower dimensional space, stochastic averaging, calculate stationary probability density function reduced variables. distribution used expectations most relevant quantities, like output voltage, harvested power efficiency. Based our previous works, consider an harvester matching network, interposed between load, reduces impedance mismatch two stages. applied optimization allowing maximize global conversion We show proposed gives accurate predictions harvester's can significantly simplify analysis, device.

Language: Английский

Citations

1
Experimental Study of the Energy Regenerated by a Horizontal Seat Suspension System under Random Vibration DOI Creative Commons
Igor Maciejewski, Sebastian Pecolt, Andrzej Błażejewski

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(17), P. 4341 - 4341

Published: Aug. 30, 2024

This article introduces a novel regenerative suspension system designed for active seat suspension, to reduce vibrations while recovering energy. The employs four-quadrant electric actuator operation model and utilizes brushless DC motor as an energy harvester. motor, permanent magnet synchronous type, transforms into three-phase AC power, serving dual purposes of vibration recovery power generation. system’s advanced control is achieved through the switching MOSFET transistors, ensuring meets operational criteria that contrast with traditional vibro-isolation systems, thereby reducing negative effects mechanical on human body, also lowering consumption. Comparative studies dynamics against passive systems under random demonstrated its effectiveness. research assessed performance spectral density transmissibility functions, highlighting potential enhance efficiency psychophysical well-being individuals subjected vibrations. effectiveness regeneration process chosen early excitation was investigated. Measurements torque in mode during braking mode, corresponding phase currents are presented.

Language: Английский

Citations

0
Potential of coupled array harvester in enhanced energy harvesting DOI
Srimanta Lal De, Shaikh Faruque Ali

Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, Journal Year: 2024, Volume and Issue: 382(2281)

Published: Sept. 9, 2024

Harvesting energy from nonlinear systems has been at the centre of research in harvesting community. Many such proposed are single harvester. While these show an increase bandwidth frequency, overall, they not effective enough power generation. This article studies and frequency characteristics array harvesters. Multiple harvesters considered with linear coupling between The phenomena internal resonance (IR) stochastic (SR) reported. IR multiple coupled is explored using multiple-scale analysis. A parametric study conducted to demonstrate effect strength, mistuning, innate nonlinearity other parameters. helped establish ways bandwidth. Moreover, a stochastically loaded linearly bistable harvester numerically analysed find strength size on phenomenon SR system’s performance. Through studies, potential enhanced demonstrated under both harmonic excitation. part theme issue ‘Celebrating 15th anniversary Royal Society Newton International Fellowship’.

Language: Английский

Citations

0