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학술지 Analysis of Vibration-Energy-Harvesting Devices based on a Piezoelectric Single Crystal Beam
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저자
문승언, 이상균, 이형근, 이재우, 양일석, 김종대
발행일
201103
출처
Journal of the Korean Physical Society, v.58 no.3, pp.645-649
ISSN
0374-4884
출판사
한국물리학회
DOI
https://dx.doi.org/10.3938/jkps.58.645
협약과제
10MB1600, 자가충전 전원모듈 기반 EPMIC 기술개발, 김종대
초록
In this paper, we present the results and analyses of vibration-energy-harvesting performances based on single crystal beam. A novel piezoelectric beam cantilever structure is used to measure the generated AC voltage during the vibration. The energy-harvesting capability of piezoelectric single crystal was measured, and the prototype based on a unimorph cantilever structure with a proof mass which were designend to operate at a vibration frequency of about 60 Hz. These tests show that several AC voltages and sub-mW power were achieved. Using the measured mechanical damping ratio and electro-mechanical coupling coefficient of the device, we calculated the output power and compared it with the above measured results.
KSP 제안 키워드
60 Hz, AC voltage, Cantilever structure, Damping ratio, Electro-mechanical coupling coefficient, Energy Harvesting(EH), Mechanical damping, Output power, Piezoelectric single crystal, Single crystal beam, Vibration frequency