Functionalization of Internal Resonance in Magnetically Coupled Resonators for Highly Efficient and Wideband Hybrid Vibration Energy Harvesting

Autor:	Kaouthar Aouali, Najib Kacem, Noureddine Bouhaddi
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	vibration energy harvesting coupled oscillators hybrid transduction nonlinear dynamics internal resonance Chemical technology TP1-1185
Zdroj:	Sensors, Vol 22, Iss 19, p 7657 (2022)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s22197657
Popis:	The functionalization of internal resonance (IR) is theoretically and experimentally demonstrated on a nonlinear hybrid vibration energy harvester (HVEH) based on piezoelectric (PE) and electromagnetic (EM) transductions. This nonlinear phenomenon is tuned by adjusting the gaps between the moving magnets of the structure, enabling 1:1 and 2:1 IR. The experimental results prove that the activation of 2:1 IR with a realistic excitation amplitude allows the improvement of both the frequency bandwidth (BW) and the harvested power (HP) by 300% and 100%, respectively compared to the case away from IR. These remarkable results open the way towards a very large scale integration of coupled resonators with simultaneous internal resonances.
Databáze:	Directory of Open Access Journals
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