A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power

A dual resonance vibration electromagnetic energy harvester (EMEH) is proposed in this paper to extend frequency range. Compared with the conventional dual resonance harvester, the proposed system realizes an enhanced “band-pass” harvesting characteristic by increasing the relative displacement betw...

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Autores principales:	Zhijie Feng, Han Peng, Yong Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dual resonance frequencies vibration electromagnetic energy harvester wide harvested frequency range enhanced “band-pass” harvested power independent resonant frequencies Technology T
Acceso en línea:	https://doaj.org/article/9caa5bf1e7d3485b8f6fffdd203ad5ad
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spelling	oai:doaj.org-article:9caa5bf1e7d3485b8f6fffdd203ad5ad2021-11-25T17:27:47ZA Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power10.3390/en142276751996-1073https://doaj.org/article/9caa5bf1e7d3485b8f6fffdd203ad5ad2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7675https://doaj.org/toc/1996-1073A dual resonance vibration electromagnetic energy harvester (EMEH) is proposed in this paper to extend frequency range. Compared with the conventional dual resonance harvester, the proposed system realizes an enhanced “band-pass” harvesting characteristic by increasing the relative displacement between magnet and coil among two resonance frequencies with a significant improvement in the average harvested power. Furthermore, two resonant frequencies are decoupled in the proposed system, which leads to a more straightforward design. The proposed dual resonance EMEH is constructed with a tubular dual spring-mass structure. It is designed with a serpentine planar spring and the coil position is optimized for higher power density with an overall size of 53.9 cm<sup>3</sup> for the dual resonance EMEH. It realizes an output power of 11 mW at the first resonant frequency of 58 Hz, 14.9 mW at the second resonant frequency of 74.5 Hz, and 0.52 mW at 65 Hz, which is in the middle of the two resonance frequencies. The frequency range of output power above 0.5 mW is from 55.8 Hz to 79.1 Hz. The maximum normalized power density (NPD) reaches up to 2.77 mW/(cm<sup>3</sup>·g<sup>2</sup>). Compared with a single resonance harvester design under the same topology and outer dimension at a resonant frequency of 74.5 Hz, the frequency range in the proposed EMEH achieves more than a 2× times extension. The proposed dual resonance EMEH also has more than 2 times wider frequency range than other state-of-art wideband EMEHs. Therefore, the proposed dual resonance EMEH is demonstrated in this paper for a high maximum NPD and higher NPD over a wide frequency range.Zhijie FengHan PengYong ChenMDPI AGarticledual resonance frequenciesvibration electromagnetic energy harvesterwide harvested frequency rangeenhanced “band-pass” harvested powerindependent resonant frequenciesTechnologyTENEnergies, Vol 14, Iss 7675, p 7675 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dual resonance frequencies vibration electromagnetic energy harvester wide harvested frequency range enhanced “band-pass” harvested power independent resonant frequencies Technology T
spellingShingle	dual resonance frequencies vibration electromagnetic energy harvester wide harvested frequency range enhanced “band-pass” harvested power independent resonant frequencies Technology T Zhijie Feng Han Peng Yong Chen A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power
description	A dual resonance vibration electromagnetic energy harvester (EMEH) is proposed in this paper to extend frequency range. Compared with the conventional dual resonance harvester, the proposed system realizes an enhanced “band-pass” harvesting characteristic by increasing the relative displacement between magnet and coil among two resonance frequencies with a significant improvement in the average harvested power. Furthermore, two resonant frequencies are decoupled in the proposed system, which leads to a more straightforward design. The proposed dual resonance EMEH is constructed with a tubular dual spring-mass structure. It is designed with a serpentine planar spring and the coil position is optimized for higher power density with an overall size of 53.9 cm<sup>3</sup> for the dual resonance EMEH. It realizes an output power of 11 mW at the first resonant frequency of 58 Hz, 14.9 mW at the second resonant frequency of 74.5 Hz, and 0.52 mW at 65 Hz, which is in the middle of the two resonance frequencies. The frequency range of output power above 0.5 mW is from 55.8 Hz to 79.1 Hz. The maximum normalized power density (NPD) reaches up to 2.77 mW/(cm<sup>3</sup>·g<sup>2</sup>). Compared with a single resonance harvester design under the same topology and outer dimension at a resonant frequency of 74.5 Hz, the frequency range in the proposed EMEH achieves more than a 2× times extension. The proposed dual resonance EMEH also has more than 2 times wider frequency range than other state-of-art wideband EMEHs. Therefore, the proposed dual resonance EMEH is demonstrated in this paper for a high maximum NPD and higher NPD over a wide frequency range.
format	article
author	Zhijie Feng Han Peng Yong Chen
author_facet	Zhijie Feng Han Peng Yong Chen
author_sort	Zhijie Feng
title	A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power
title_short	A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power
title_full	A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power
title_fullStr	A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power
title_full_unstemmed	A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power
title_sort	dual resonance electromagnetic vibration energy harvester for wide harvested frequency range with enhanced output power
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9caa5bf1e7d3485b8f6fffdd203ad5ad
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A Dual Resonance Electromagnetic Vibration Energy Harvester for Wide Harvested Frequency Range with Enhanced Output Power

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