Hybrid multi-mode magneto-mechano-electric generator with enhanced magnetic field energy harvesting performance

Cheng, Miaomiao; Wu, Jingen; Liang, Xianfeng; Mao, Ruohao; Huang, Hui; Ju, Dengfeng; Hu, Zhongqiang; Guo, Jun; Liu, Ming

doi:10.1016/j.sna.2023.114194

Cited by 5 publications

(1 citation statement)

References 30 publications

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“…Hybrid energy harvesters are expected to improve space utilization efficiency and increase total output power [10][11][12][13]. However, previous studies on hybrid systems have not considered the parasitic losses of piezoelectric and electromagnetic transducers simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Are piezoelectric-electromagnetic hybrid energy harvesting systems beneficial?

Truong,

Le,

Roundy

2023

Smart Mater. Struct.

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The primary objective of this work is to investigate the performance of a hybrid energy harvesting system consisting of piezoelectric and electromagnetic transducers. We first show that a single--mechanism generator with negligible electrical losses, referred to as an electrically--lossless harvester, can reach the theoretical power bound regardless of the coupling strength between the mechanical and electrical domains, which renders the use of hybrid systems unnecessary. For a more realistic analysis, the electrically parasitic losses are then taken into account. We introduce effective figures of merit for the piezoelectric and electromagnetic generators that combine transducer coupling and resistive losses. The maximum output power of single--transducer and hybrid systems are determined analytically, expressed as functions of effective figures of merit. We find that there is no benefit to utilizing a hybrid system if one of the two, or both, effective figures of merit exceeds a threshold of $\mathcal{M}^\ast \approx 2.17$. We also derive the narrow conditions under which a resonant hybrid harvester system with multiple transduction mechanisms can outperform its counterpart which uses a single energy conversion. In order to provide a comprehensive assessment of the configurations considered, we analyze the relationships between optimizing system efficiency and maximizing output power. We reveal that the two problems generally yield different solutions. However, for a hybrid structure, these objectives result in a unique solution when the effective figures of merit of the two transductions are equal. This is a distinctive property of a hybrid system compared to a single--mechanism device.

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Section: Introductionmentioning

confidence: 99%

Are piezoelectric-electromagnetic hybrid energy harvesting systems beneficial?

Truong,

Le,

Roundy

2023

Smart Mater. Struct.

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Analysis and experiment of a novel compact magnetic spring with high linear negative stiffness

Ming-kai

Che

et al. 2023

Mechanical Systems and Signal Processing

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Enhancing Stray Magnetic Energy Harvesting with Flexible PVDF/CoFe₂O₄ Electrospun Fiber Composite Magneto-Mechano-Electric Generators

Pabba,

Ram,

Kaarthik

et al. 2024

ACS Appl. Electron. Mater.

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This study introduces a highly flexible, vertically installed electrospun PVDF/CoFe 2 O 4 composite-based Magneto-Mechano-Electric (MME) generator designed to capture and utilize environmental stray magnetic noise, a prevalent form of waste energy from electrical power transmission systems. We fabricated highly flexible, freestanding magnetoelectric composite electrospun fibers by combining piezoelectric PVDF polymer and magnetostrictive CoFe 2 O 4 . XRD and FTIR analyses confirmed a significant enhancement in the ferroelectric β-phase content, reaching 86% with the incorporation of CoFe 2 O 4 . The electrostatic interaction mechanism between PVDF and CoFe 2 O 4 was explained and validated through Zeta potential and XPS analyses. The developed MME generator demonstrated a high output voltage and power density of 12.1 V and 174 μW/m 2 , respectively, under a low AC magnetic field of 6 Oe. The detailed mechanism of energy generation in the MME device has been explained. The fabricated MME device also demonstrated the highest magnetoelectric voltage coefficient (α MME ) value of 224 V cm −1 Oe −1 , even in the absence of a magnetic bias DC field. The MME generator has demonstrated stable output harvesting performance across 50,000 testing cycles. This MME generator efficiently harvested low and weak parasitic magnetic noise from various electrical appliances, such as dryers, kettles, and iron boxes, thereby enabling a remote power supply to consumer electronics.

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Hybrid multi-mode magneto-mechano-electric generator with enhanced magnetic field energy harvesting performance

Cited by 5 publications

References 30 publications

Are piezoelectric-electromagnetic hybrid energy harvesting systems beneficial?

Are piezoelectric-electromagnetic hybrid energy harvesting systems beneficial?

Analysis and experiment of a novel compact magnetic spring with high linear negative stiffness

Enhancing Stray Magnetic Energy Harvesting with Flexible PVDF/CoFe₂O₄ Electrospun Fiber Composite Magneto-Mechano-Electric Generators

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Hybrid multi-mode magneto-mechano-electric generator with enhanced magnetic field energy harvesting performance

Cited by 5 publications

References 30 publications

Are piezoelectric-electromagnetic hybrid energy harvesting systems beneficial?

Are piezoelectric-electromagnetic hybrid energy harvesting systems beneficial?

Analysis and experiment of a novel compact magnetic spring with high linear negative stiffness

Enhancing Stray Magnetic Energy Harvesting with Flexible PVDF/CoFe2O4 Electrospun Fiber Composite Magneto-Mechano-Electric Generators

Contact Info

Product

Resources

About

Enhancing Stray Magnetic Energy Harvesting with Flexible PVDF/CoFe₂O₄ Electrospun Fiber Composite Magneto-Mechano-Electric Generators