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Electrically rectified piezoelectric energy harvester excited by rotary magnetic plucking
Author(s): Y. C. Shu; Y. P. Chang; W. C. Wang
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Paper Abstract

The paper is focuses on the development of a theoretical framework together with an experimental validation to investigate rotational piezoelectric energy harvesting. The proposed device includes an electrically rectified piezoelectric bimorph mounted on a stationary base with a magnet attached to its free end. Energy is harvested by vibration of beam induced by non-contact rotary magnetic plucking. The DC power frequency response is predicted and found to be in good agreement with experiment. It shows that the harvested DC power is around 1 mW in average with the rotational frequency ranging from 5 Hz to 14 Hz. In addition, the parallel connection of two piezoelectric oscillators with respective electrical rectification is considered. It is observed that the power output of the array is the addition of the response from each individual piezoelectric oscillator.

Paper Details

Date Published: 15 March 2018
PDF: 8 pages
Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105950D (15 March 2018); doi: 10.1117/12.2296450
Show Author Affiliations
Y. C. Shu, National Taiwan Univ. (Taiwan)
Y. P. Chang, National Taiwan Univ. (Taiwan)
W. C. Wang, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 10595:
Active and Passive Smart Structures and Integrated Systems XII
Alper Erturk, Editor(s)

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