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A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams

Vibration-energy harvesting is an effective strategy for replacing batteries and provides a long-term power supply to microelectronic devices. Harvesting vibration energy from human motions has attracted research attention in recent years. Here, a novel low-frequency hybrid piezoelectric and electro...

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Detalles Bibliográficos
Autores principales: Jiang, Bing, Zhu, Fan, Yang, Yi, Zhu, Jingyu, Yang, Yuting, Yuan, Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9967949/
https://www.ncbi.nlm.nih.gov/pubmed/36837940
http://dx.doi.org/10.3390/mi14020240
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author Jiang, Bing
Zhu, Fan
Yang, Yi
Zhu, Jingyu
Yang, Yuting
Yuan, Ming
author_facet Jiang, Bing
Zhu, Fan
Yang, Yi
Zhu, Jingyu
Yang, Yuting
Yuan, Ming
author_sort Jiang, Bing
collection PubMed
description Vibration-energy harvesting is an effective strategy for replacing batteries and provides a long-term power supply to microelectronic devices. Harvesting vibration energy from human motions has attracted research attention in recent years. Here, a novel low-frequency hybrid piezoelectric and electromagnetic broadband harvester is proposed. Two parallel piezoelectric cantilever beams support the harvester and capture environmental vibration energy based on the piezoelectric effect. A permanent magnet is connected by springs to the two beams, and a fixed coil surrounds the moving permanent magnet, enabling energy conversion via the electromagnetic effect and the proof mass. The parameters influencing the output power of the harvester are optimized numerically to boost the harvester’s performance. The output power of the proposed hybrid harvester is compared with that of a piezoelectric harvester and an electromagnetic harvester. The simulation results show that the output power is significantly higher for the hybrid harvester than for the piezoelectric and electromagnetic harvesters, and the bandwidth is broader owing to the double cantilevers. An experiment is conducted using a prototype of the hybrid harvester to evaluate its output power. The results show multiple resonant peaks, an extended bandwidth, and a maximum power of 6.28 mW. In contrast, the maximum harvested power of the piezoelectric harvester is only 5.15 mW at 9.6 Hz.
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spelling pubmed-99679492023-02-27 A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams Jiang, Bing Zhu, Fan Yang, Yi Zhu, Jingyu Yang, Yuting Yuan, Ming Micromachines (Basel) Article Vibration-energy harvesting is an effective strategy for replacing batteries and provides a long-term power supply to microelectronic devices. Harvesting vibration energy from human motions has attracted research attention in recent years. Here, a novel low-frequency hybrid piezoelectric and electromagnetic broadband harvester is proposed. Two parallel piezoelectric cantilever beams support the harvester and capture environmental vibration energy based on the piezoelectric effect. A permanent magnet is connected by springs to the two beams, and a fixed coil surrounds the moving permanent magnet, enabling energy conversion via the electromagnetic effect and the proof mass. The parameters influencing the output power of the harvester are optimized numerically to boost the harvester’s performance. The output power of the proposed hybrid harvester is compared with that of a piezoelectric harvester and an electromagnetic harvester. The simulation results show that the output power is significantly higher for the hybrid harvester than for the piezoelectric and electromagnetic harvesters, and the bandwidth is broader owing to the double cantilevers. An experiment is conducted using a prototype of the hybrid harvester to evaluate its output power. The results show multiple resonant peaks, an extended bandwidth, and a maximum power of 6.28 mW. In contrast, the maximum harvested power of the piezoelectric harvester is only 5.15 mW at 9.6 Hz. MDPI 2023-01-18 /pmc/articles/PMC9967949/ /pubmed/36837940 http://dx.doi.org/10.3390/mi14020240 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Bing
Zhu, Fan
Yang, Yi
Zhu, Jingyu
Yang, Yuting
Yuan, Ming
A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams
title A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams
title_full A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams
title_fullStr A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams
title_full_unstemmed A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams
title_short A Hybrid Piezoelectric and Electromagnetic Broadband Harvester with Double Cantilever Beams
title_sort hybrid piezoelectric and electromagnetic broadband harvester with double cantilever beams
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9967949/
https://www.ncbi.nlm.nih.gov/pubmed/36837940
http://dx.doi.org/10.3390/mi14020240
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