Investigation of networked SSHI configurations for plate-based piezoelectric energy harvesters

Tarhan, Engin; Morteza Hoseyni, Seyed; Aghakhani, Amirreza; Basdogan, Ipek

Abstract

Piezo-patch energy harvesters attached to plate-like structures can be used to extract multimodal
vibrational energy. For each piezo-patch, SSHI circuits can boost the harvested power compared
to standard rectifier circuits. However, the effect of using different configurations of the SSHI
network for multiple piezo-patches on plate structures has not yet been understood. This study
aims to assess the performance of the networked SSHI configurations compared to networked
rectifier configurations and investigate the optimum configurations for energy harvesting
purposes. For this, three piezo-patches are bonded to an aluminum plate and connected to single
and/or multiple circuits. The equivalent circuit model (ECM) of the electromechanical system is
developed from the experimentally validated analytical model and utilized in simulation software
LTspice. The performances of considered configurations are evaluated regarding peak power
outputs, and the optimal load resistances are obtained. Based on the experimental findings, the
best configuration is determined and verified by simulations. The results show that by using
respective SSHIs, the power output can be improved by preventing charge cancellation despite
the cost of increased diode loss. This study contributes to our understanding of optimal energy
harvesting techniques by investigating the effectiveness of networked SSHI configurations for
multiple piezo-patches on plate structures

• Journal Article Type: Article
• Acceptance Date: Nov 25, 2024
• Publication Date: Jan 15, 2025
• Deposit Date: Feb 7, 2025
• Publicly Available Date: Feb 17, 2025
• Journal: Journal of Intelligent Material Systems and Structures
• Print ISSN: 1045-389X
• Electronic ISSN: 1530-8138
• Publisher: SAGE Publications
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1177/1045389X241306534