Plaza Puértolas, AitorIriarte Goñi, XabierCastellano Aldave, Jesús CarlosCarlosena García, Alfonso2024-06-172024-06-172024Plaza, A., Iriarte, X., Castellano-Aldave, C., Carlosena, A (2024) Comprehensive characterisation of a low-frequency-vibration energy harvester. Sensors, 24(12), 1-24. https://doi.org/10.3390/s24123813.1424-822010.3390/s24123813https://academica-e.unavarra.es/handle/2454/48389In this paper, we describe a measurement procedure to fully characterise a novel vibration energy harvester operating in the ultra-low-frequency range. The procedure, which is more thorough than those usually found in the literature, comprises three main stages: modelling, experimental characterisation and parameter identification. Modelling is accomplished in two alternative ways, a physical model (white box) and a mixed one (black box), which model the magnetic interaction via Fourier series. The experimental measurements include not only the input (acceleration)–output (energy) response but also the (internal) dynamic behaviour of the system, making use of a synchronised image processing and signal acquisition system. The identification procedure, based on maximum likelihood, estimates all the relevant parameters to characterise the system to simulate its behaviour and helps to optimise its performance. While the method is custom-designed for a particular harvester, the comprehensive approach and most of its procedures can be applied to similar harvesters.application/pdfeng© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.Energy harvestingVibration harvesterModel identificationLow-frequency vibrationsWind turbinesArtículo / Artikulua2024-06-17Acceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess