Multimodal piezoelectric energy harvesting on a thin plate integrated with SSHI circuit: an analytical and experimental study

Abstract

<p>In this study, an advanced energy harvesting interface called synchronized switch harvesting on inductor (SSHI) has been integrated with a piezoelectric energy harvester on a plate-like structure for multimode energy harvesting purposes. To the best of author’s knowledge, this type of energy harvesting system has not been studied in the literature before. Analytical solution has been developed to predict the power output of the harvester. Besides, experiments have been performed to validate the analytical model predictions and evaluate performance of the circuit. The experimental results showed that the SSHI circuit has three different switching behaviour, namely, no switching, single switching, and multi-switching. Power output of the SSHI circuit has been compared with AC-DC rectifier. It was shown that the SSHI circuit improves the power output of the harvester for the first two vibration modes of structure in the single switching case. The SSHI circuit acts as a rectifier in no switching case. Finally, multi-switching dissipates the available energy of harvester and reduces the output voltage and power of the harvester. </p>

Multi-location fault detection with piezoelectric arrays and multi-task CNN learning

“…It utilizes piezoelectric array sensors and multi-task CNN learning. The former employs a multi-input single-output (MISO) sensing approach by capturing signals from a piezoelectric patch array, [38][39][40][41][42][43] facilitating sensor fusion for spatial condition monitoring through a single voltage signal. The latter employs self-transfer learning to achieve defect classification with two output layers.…”

Physics-informed neural network for parameter identification in a piezoelectric harvester

“…Other works based on FE and circuit simulations are referenced in. 43,44 Finally, Hoseyni et al 45 and Koszewnik 46 introduced different experimental procedures for identifying the equivalent circuit modeling of piezoelectric patches attached to a plate.…”