This paper proposes a broadband rotational energy harvesting setup by using micro piezoelectric energy harvester (PEH). When driven in different rotating speed, the PEH can output relatively high power which exhibits the phenomenon of frequency up-conversion transforming the low frequency of rotation into the high frequency of resonant vibration. It aims to power self-powered devices used in the applications, like smart tires, smart bearings, and health monitoring sensors on rotational machines. Through the excitation of the rotary magnetic repulsion, the cantilever beam presents periodically damped oscillation. Under the rotational excitation, the maximum output voltage and power of PEH with optimal impedance is 28.2 Vpp and 663 μW, respectively. The output performance of the same energy harvester driven in ordinary vibrational based excitation is compared with rotational oscillation under open circuit condition. The maximum output voltage under 2.5g acceleration level of vibration is 27.54 Vpp while the peak output voltage of 36.5 Vpp in rotational excitation (in 265 rpm).
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ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 10–12, 2018
San Antonio, Texas, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-5195-1
PROCEEDINGS PAPER
Broadband Rotational Energy Harvesting Using Micro Energy Harvester
Jui-Ta Chien,
Jui-Ta Chien
National Taiwan University, Taipei, Taiwan
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Yung-Hsing Fu,
Yung-Hsing Fu
National Taiwan University, Taipei, Taiwan
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Chao-Ting Chen,
Chao-Ting Chen
National Taiwan University, Taipei, Taiwan
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Shun-Chiu Lin,
Shun-Chiu Lin
National Taiwan University, Taipei, Taiwan
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Yi-Chung Shu,
Yi-Chung Shu
National Taiwan University, Taipei, Taiwan
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Wen-Jong Wu
Wen-Jong Wu
National Taiwan University, Taipei, Taiwan
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Jui-Ta Chien
National Taiwan University, Taipei, Taiwan
Yung-Hsing Fu
National Taiwan University, Taipei, Taiwan
Chao-Ting Chen
National Taiwan University, Taipei, Taiwan
Shun-Chiu Lin
National Taiwan University, Taipei, Taiwan
Yi-Chung Shu
National Taiwan University, Taipei, Taiwan
Wen-Jong Wu
National Taiwan University, Taipei, Taiwan
Paper No:
SMASIS2018-8029, V002T07A007; 7 pages
Published Online:
November 14, 2018
Citation
Chien, J, Fu, Y, Chen, C, Lin, S, Shu, Y, & Wu, W. "Broadband Rotational Energy Harvesting Using Micro Energy Harvester." Proceedings of the ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting; Emerging Technologies. San Antonio, Texas, USA. September 10–12, 2018. V002T07A007. ASME. https://doi.org/10.1115/SMASIS2018-8029
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