Analysis of Cantilever Triple-Layer Piezoelectric Harvester (CTLPH): Non-Resonance Applications

Mojtaba Ghodsi (), Morteza Mohammadzaheri and Payam Soltani
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Mojtaba Ghodsi: School of Energy and Electronic Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK
Morteza Mohammadzaheri: School of Engineering and the Built Environment, Birmingham City University, Birmingham B4 7XG, UK
Payam Soltani: School of Engineering and the Built Environment, Birmingham City University, Birmingham B4 7XG, UK

Energies, 2023, vol. 16, issue 7, 1-17

Abstract: In this research, a design guideline for a kinetic energy converter using a cantilever triple-layer piezoelectric harvester (CTLPH) for low-frequency applications is presented. By combining the constitutive and internal energy equations, the analytical equations for harvested voltage and power were developed. It was also found that frequency of motion, applied tip force, piezoelectric coefficients, geometrical dimensions, and mechanical properties of layers play significant roles in the performance of the harvester. Having characterised the voltage regulator module, LTC3588, the dependency of output voltage on both the storage and output capacitors of the LTC3588 was investigated. An experimental measurement using the optical method was carried out to determine the applied tip force. Furthermore, the performance of the CTLPH in low frequencies (<3.3 Hz) for various resistive loads was investigated. It was found that both excitation frequency and external resistance load are effective on the maximum generated power. The developed CTLPH shows the optimum power of 17.31 μ W at the external resistance of 20 kΩ, which is highly appropriate for micropower devices with at least 3.2 Hz of kinetic vibration in their environment.

Keywords: piezoelectric; low-frequency; tip-force; cantilever beam; triple-layer beam; non-resonance harvester; reciprocated motion; tip-mass; LTC3588 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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