연결된 세 보 구조를 갖는 다모드 압전 에너지 하베스터의 전기-역학적 모델링 및 해석Electromechanical Modeling and Analysis of a Multimodal Piezoelectric Energy Harvester Comprising Three Connected Beams
- Other Titles
- Electromechanical Modeling and Analysis of a Multimodal Piezoelectric Energy Harvester Comprising Three Connected Beams
- Authors
- 정신우; 유홍희
- Issue Date
- Aug-2016
- Publisher
- 한국소음진동공학회
- Keywords
- Piezoelectric Energy Harvester; Multimode; Electromechanical Model; 압전 에너지 하베스터; 다모드; 전기-역학적 모델
- Citation
- 한국소음진동공학회논문집, v.26, no.4, pp.458 - 468
- Indexed
- KCI
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 26
- Number
- 4
- Start Page
- 458
- End Page
- 468
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2805
- DOI
- 10.5050/KSNVE.2016.26.4.458
- ISSN
- 1598-2785
- Abstract
- Electromechanical model for analyzing a multimodal piezoelectric energy harvester comprising three connected beams is presented in this paper. This system consists of three beams which are connected alternately. The piezoelectric layer is only attached to the middle beam. With this special structural configuration, the first, second, and third natural frequencies are congregated so that the energy harvester can generate meaningful amount of power consistently when the main frequency component of the excitation varies around the lowest three natural frequencies of the harvester. To investigate the dynamic and electric response of the piezoelectric energy harvester, an electromechanical model is developed using the Kane's method and the accuracy of the model is validated by comparing the results obtained with the model with those obtained with the commercial software ANSYS. The results show that the piezoelectric energy harvester comprising three connected beams has much broader power generating frequency range than that of the conventional piezoelectric energy harvester.
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