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Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field

This technical note proposes a clapping vibration energy harvesting system (CVEH system) installed in a rotating system. This device includes a rotating wheel, a drive shaft that rotates the wheel, and a double elastic steel sheet fixed on the drive shaft. One of the free ends of the steel is fixed...

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Autores principales: Wang, Yi-Ren, Feng, Chao-Kang, Cheng, Chin-Han, Chen, Pin-Tung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9506292/
https://www.ncbi.nlm.nih.gov/pubmed/36146257
http://dx.doi.org/10.3390/s22186916
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author Wang, Yi-Ren
Feng, Chao-Kang
Cheng, Chin-Han
Chen, Pin-Tung
author_facet Wang, Yi-Ren
Feng, Chao-Kang
Cheng, Chin-Han
Chen, Pin-Tung
author_sort Wang, Yi-Ren
collection PubMed
description This technical note proposes a clapping vibration energy harvesting system (CVEH system) installed in a rotating system. This device includes a rotating wheel, a drive shaft that rotates the wheel, and a double elastic steel sheet fixed on the drive shaft. One of the free ends of the steel is fixed with a magnet, and the free end of the other elastic steel is fixed with a PZT patch. We also install an array of magnets on the periphery (rim) of the wheel. The rim magnets repulse the magnet on the elastic steel sheet of the transmission shaft, causing the elastic steel to oscillate periodically, and slap the piezoelectric patch installed on the other elastic steel sheet to generate electricity. In this study, the authors’ previous study on the voltage output was improved, and the accurate nonlinear natural frequency of the elastic steel was obtained by the dimensional analysis method. By adjusting the rotation speed of the wheel, the precise frequency was controlled to accurately excite the energy harvesting system and obtain the best output voltage. A simple experiment was also performed to correlate with the theoretical model. The voltage and power output efficiencies of the nonlinear frequency to linear frequency excitation of the CVEH system can reach 15.7% and 33.5%, respectively. This study confirms that the clapping VEH system has practical power generation benefits, and verifies that nonlinear frequencies are more effective than linear frequencies to excite the CVEH system to generate electricity.
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spelling pubmed-95062922022-09-24 Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field Wang, Yi-Ren Feng, Chao-Kang Cheng, Chin-Han Chen, Pin-Tung Sensors (Basel) Technical Note This technical note proposes a clapping vibration energy harvesting system (CVEH system) installed in a rotating system. This device includes a rotating wheel, a drive shaft that rotates the wheel, and a double elastic steel sheet fixed on the drive shaft. One of the free ends of the steel is fixed with a magnet, and the free end of the other elastic steel is fixed with a PZT patch. We also install an array of magnets on the periphery (rim) of the wheel. The rim magnets repulse the magnet on the elastic steel sheet of the transmission shaft, causing the elastic steel to oscillate periodically, and slap the piezoelectric patch installed on the other elastic steel sheet to generate electricity. In this study, the authors’ previous study on the voltage output was improved, and the accurate nonlinear natural frequency of the elastic steel was obtained by the dimensional analysis method. By adjusting the rotation speed of the wheel, the precise frequency was controlled to accurately excite the energy harvesting system and obtain the best output voltage. A simple experiment was also performed to correlate with the theoretical model. The voltage and power output efficiencies of the nonlinear frequency to linear frequency excitation of the CVEH system can reach 15.7% and 33.5%, respectively. This study confirms that the clapping VEH system has practical power generation benefits, and verifies that nonlinear frequencies are more effective than linear frequencies to excite the CVEH system to generate electricity. MDPI 2022-09-13 /pmc/articles/PMC9506292/ /pubmed/36146257 http://dx.doi.org/10.3390/s22186916 Text en © 2022 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 Technical Note
Wang, Yi-Ren
Feng, Chao-Kang
Cheng, Chin-Han
Chen, Pin-Tung
Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
title Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
title_full Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
title_fullStr Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
title_full_unstemmed Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
title_short Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
title_sort analysis of a clapping vibration energy harvesting system in a rotating magnetic field
topic Technical Note
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9506292/
https://www.ncbi.nlm.nih.gov/pubmed/36146257
http://dx.doi.org/10.3390/s22186916
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