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학술지 Vibration Energy Harvester with Sustainable Power Based on a Single-Crystal Piezoelectric Cantilever Array
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저자
김문근, 이상균, 함용현, 양일석, 권종기, 권광호
발행일
201208
출처
Journal of Nanoscience and Nanotechnology, v.12 no.8, pp.6283-6286
ISSN
1533-4880
출판사
American Scientific Publishers (ASP),
DOI
https://dx.doi.org/10.1166/jnn.2012.6420
협약과제
12MB1900, 자가충전 전원모듈 기반 EPMIC, 권종기
초록
We designed and fabricated a bimorph cantilever array for sustainable power with an integrated Cu proof mass to obtain additional power and current. We fabricated a cantilever system using singlecrystal piezoelectric material and compared the calculations for single and arrayed cantilevers to those obtained experimentally. The vibration energy harvester had resonant frequencies of 60.4 and 63.2 Hz for short and open circuits, respectively. The damping ratio and quality factor of the cantilever device were 0.012 and 41.66, respectively. The resonant frequency at maximum average power was 60.8 Hz. The current and highest average power of the harvester array were found to be 0.728 mA and 1.61 mW, respectively. The sustainable maximum power was obtained after slightly shifting the short-circuit frequency. In order to improve the current and power using an array of cantilevers, we also performed energy conversion experiments. Copyright © 2012 American Scientific Publishers.
키워드
Cantilever, Energy Harvesting, Piezoelectric, PMN-PT, Single Crystal
KSP 제안 키워드
Average Power, Bimorph cantilever, Damping ratio, Energy Conversion, Energy Harvesting(EH), PMN-PT, Piezoelectric cantilever, Piezoelectric material, Quality-factor(Q-factor), Resonant frequency(Fr), Single crystal