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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
한국물리학회, 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.
키워드
Cantilever, Piezoelectric, Vibration-energy-harvesting
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