상세정보
학술지
Characterization of High Power Piezoelectric Energy Scavenging Device based on PMN-PT Piezoelectric Single Crystal
- 발행일
- 201201
- 출처
- Journal of the Korean Physical Society, v.60 no.2, pp.230-234
- ISSN
- 0374-4884
- 출판사
- 한국물리학회
- 초록
- 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 제안 키워드
- 60 Hz, Bimorph cantilever, Cantilever structure, Damping ratio, Electro-mechanical coupling coefficient, Energy Scavenging, High power, Li-ion battery charging, Mechanical damping, Natural Resonance Frequency, PMN-PT piezoelectric single crystal