Piezoelectric energy harvesting with an ultrasonic vibration source

Tao Li; Pooi See Lee

doi:10.3390/act8010008

Piezoelectric energy harvesting with an ultrasonic vibration source

Tao Li^*, Pooi See Lee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A piezoelectric energy harvester was developed in this paper. It is actuated by the vibration leakage from the nodal position of a high-power ultrasonic cutting transducer. The harvester was excited at a low displacement amplitude (0.73 μm _pp ). However, its operation frequency is quite high and reaches the ultrasonic range (24.4 kHz). Compared with another low frequency harvester (66 Hz), both theoretical and experimental results proved that the advantages of this high frequency harvester include (i) high current generation capability (up to 20 mA _pp compared to 1.3 mA _pp of the 66 Hz transducer) and (ii) low impedance matching resistance (500 Ω in contrast to 50 kΩ of the 66 Hz transducer). This energy harvester can be applied either in sensing, or vibration controlling, or simply energy harvesting in a high-power ultrasonic system.

Original language	English
Article number	8
Journal	Actuators
Volume	8
Issue number	1
DOIs	https://doi.org/10.3390/act8010008
Publication status	Published - 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 by the authors.

ASJC Scopus Subject Areas

Control and Systems Engineering
Control and Optimization

Keywords

Actuator
Energy harvesting
Piezoelectric
Ultrasonic
Vibration

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10.3390/act8010008

Cite this

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AB - A piezoelectric energy harvester was developed in this paper. It is actuated by the vibration leakage from the nodal position of a high-power ultrasonic cutting transducer. The harvester was excited at a low displacement amplitude (0.73 μm pp ). However, its operation frequency is quite high and reaches the ultrasonic range (24.4 kHz). Compared with another low frequency harvester (66 Hz), both theoretical and experimental results proved that the advantages of this high frequency harvester include (i) high current generation capability (up to 20 mA pp compared to 1.3 mA pp of the 66 Hz transducer) and (ii) low impedance matching resistance (500 Ω in contrast to 50 kΩ of the 66 Hz transducer). This energy harvester can be applied either in sensing, or vibration controlling, or simply energy harvesting in a high-power ultrasonic system.

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Piezoelectric energy harvesting with an ultrasonic vibration source

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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