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15 March 2018 Electrically rectified piezoelectric energy harvester excited by rotary magnetic plucking
Y. C. Shu, Y. P. Chang, W. C. Wang
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Proceedings Volume 10595, Active and Passive Smart Structures and Integrated Systems XII; 105950D (2018) https://doi.org/10.1117/12.2296450
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2018, Denver, Colorado, United States
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.
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Y. C. Shu, Y. P. Chang, and W. C. Wang "Electrically rectified piezoelectric energy harvester excited by rotary magnetic plucking", Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105950D (15 March 2018); https://doi.org/10.1117/12.2296450
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KEYWORDS
Magnetism
Oscillators
Energy harvesting
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