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http://dx.doi.org/10.5050/KSNVE.2016.26.4.458

Electromechanical Modeling and Analysis of a Multimodal Piezoelectric Energy Harvester Comprising Three Connected Beams  

Jeong, Sin-Woo (Department of Mechanical Engineering, Hanyang University)
Yoo, Hong Hee (Department of Mechanical Engineering, Hanyang University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.26, no.4, 2016 , pp. 458-468 More about this Journal
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.
Keywords
Piezoelectric Energy Harvester; Multimode; Electromechanical Model;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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