Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications
Abstract In this paper, we originally report a breakthrough in the power density of a novel electromagnetic energy harvester to scavenge ambient low-frequency vibration energy. The harvester adopted a configuration of alternating south- and north-pole magnet array, which causes a step-change in magn...
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Online Access: | http://dx.doi.org/10.1088/1361-665x/abf69e https://iopscience.iop.org/article/10.1088/1361-665X/abf69e https://iopscience.iop.org/article/10.1088/1361-665X/abf69e/pdf |
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crioppubl:10.1088/1361-665x/abf69e 2024-09-09T19:58:41+00:00 Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications Peng, Yan Zhang, Dong Luo, Jun Xie, Shaorong Pu, Huayan Li, Zhongjie The National Science Fund for Distinguished Young Scholars National Natural Science Foundation of China 2021 http://dx.doi.org/10.1088/1361-665x/abf69e https://iopscience.iop.org/article/10.1088/1361-665X/abf69e https://iopscience.iop.org/article/10.1088/1361-665X/abf69e/pdf unknown IOP Publishing https://iopscience.iop.org/page/copyright https://iopscience.iop.org/info/page/text-and-data-mining Smart Materials and Structures volume 30, issue 6, page 065005 ISSN 0964-1726 1361-665X journal-article 2021 crioppubl https://doi.org/10.1088/1361-665x/abf69e 2024-08-26T04:18:51Z Abstract In this paper, we originally report a breakthrough in the power density of a novel electromagnetic energy harvester to scavenge ambient low-frequency vibration energy. The harvester adopted a configuration of alternating south- and north-pole magnet array, which causes a step-change in magnetic flux density, contributing to high electromotive force output. Through analysis of the coil configuration and the initial relative position between coils and magnets, the harvester can take full advantage of the abrupt flux density change, which enhances its output power significantly. Experimental results adequately validated the simulation analysis regarding the correlation between the initial relative position and output power, and exhibited a high output performance. Namely, the maximum average power and power density the harvester yields are 44.8 mW and 1.6 <?CDATA ${\text{mW}}\;{\text{c}}{{\text{m}}^{ - 3}}$?> mW c m − 3 , respectively, with the optimum resistance of 30 Ω at resonance under the excitation of 1 g. It took the harvester around 5 min to charge a button lithium battery up to 21%. Meanwhile, a LED array composed of 180 diodes was successfully lighted up, and a calculator was powered for around 630 s within a 20 s of charging period. This research shows great potential in the development of self-powered systems. Article in Journal/Newspaper North Pole IOP Publishing North Pole Smart Materials and Structures 30 6 065005 |
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Abstract In this paper, we originally report a breakthrough in the power density of a novel electromagnetic energy harvester to scavenge ambient low-frequency vibration energy. The harvester adopted a configuration of alternating south- and north-pole magnet array, which causes a step-change in magnetic flux density, contributing to high electromotive force output. Through analysis of the coil configuration and the initial relative position between coils and magnets, the harvester can take full advantage of the abrupt flux density change, which enhances its output power significantly. Experimental results adequately validated the simulation analysis regarding the correlation between the initial relative position and output power, and exhibited a high output performance. Namely, the maximum average power and power density the harvester yields are 44.8 mW and 1.6 <?CDATA ${\text{mW}}\;{\text{c}}{{\text{m}}^{ - 3}}$?> mW c m − 3 , respectively, with the optimum resistance of 30 Ω at resonance under the excitation of 1 g. It took the harvester around 5 min to charge a button lithium battery up to 21%. Meanwhile, a LED array composed of 180 diodes was successfully lighted up, and a calculator was powered for around 630 s within a 20 s of charging period. This research shows great potential in the development of self-powered systems. |
author2 |
The National Science Fund for Distinguished Young Scholars National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Peng, Yan Zhang, Dong Luo, Jun Xie, Shaorong Pu, Huayan Li, Zhongjie |
spellingShingle |
Peng, Yan Zhang, Dong Luo, Jun Xie, Shaorong Pu, Huayan Li, Zhongjie Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
author_facet |
Peng, Yan Zhang, Dong Luo, Jun Xie, Shaorong Pu, Huayan Li, Zhongjie |
author_sort |
Peng, Yan |
title |
Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
title_short |
Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
title_full |
Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
title_fullStr |
Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
title_full_unstemmed |
Power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
title_sort |
power density improvement based on investigation of initial relative position in an electromagnetic energy harvester with self-powered applications |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
http://dx.doi.org/10.1088/1361-665x/abf69e https://iopscience.iop.org/article/10.1088/1361-665X/abf69e https://iopscience.iop.org/article/10.1088/1361-665X/abf69e/pdf |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
genre_facet |
North Pole |
op_source |
Smart Materials and Structures volume 30, issue 6, page 065005 ISSN 0964-1726 1361-665X |
op_rights |
https://iopscience.iop.org/page/copyright https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1361-665x/abf69e |
container_title |
Smart Materials and Structures |
container_volume |
30 |
container_issue |
6 |
container_start_page |
065005 |
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1809929726278500352 |