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Characterization of a high-power piezoelectric energy-scavenging device based on PMN-PT piezoelectric single crystals
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- Authors
- SeungEon Moon, SangKyun Lee, YoungGi Lee, Kwang Man Kim, YilSuk Yang, WooSeok Yang, Jongdae Kim
- Issue Date
- 2012-01
- Citation
- Journal of the Korean Physical Society, v.60, no.2, pp.230-234
- ISSN
- 0374-4884
- Publisher
- 한국물리학회
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, we present the calculations and the results for vibration-energy-scavenging performances based on a piezoelectric single-crystal beam. Using the measured mechanical damping ratio and electro-mechanical coupling coefficient of a novel cantilever structure device, we calculated the output performances and compared them with the measured results. A device based on a bimorph cantilever structure with a proof mass was designed to have a natural resonance frequency of about 60 Hz, and the energy-scavenging capability of piezoelectric single crystal was measured. The results showed that several tens of AC volts and a few milliwatts power were achieved under a 0. 1 g rms vibration condition. Also using this device and a commercial power management circuit, we performed Li-ion battery charging experiment. © 2012 The Korean Physical Society.
- KSP Keywords
- 60 Hz, Bimorph cantilever, Cantilever structure, Damping ratio, Electro-mechanical coupling coefficient, High-power piezoelectric, Li-ion battery charging, Lithium-ion batteries(LIBs), Mechanical damping, Natural Resonance Frequency, PMN-PT