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Dynamic characteristics and energy performance of a magnetically induced multi-array piezoelectric energy harvester with asymmetric potential wells

Autor(en):

ORCID
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Medium: Fachartikel
Sprache(n): Englisch
Veröffentlicht in: Smart Materials and Structures, , n. 11, v. 33
Seite(n): 115002
DOI: 10.1088/1361-665x/ad7e86
Abstrakt:

Piezoelectric energy harvesting technology is a promising strategy for powering wireless sensor networks. However, piezoelectric energy harvesters (PEHs), especially linear PEHs, usually have narrow operating frequency bandwidth. In this study, in order to broaden frequency bandwidth, a nonlinear multi-stable magnetically induced PEH array (MPEHA) with asymmetric potential wells is proposed. Specifically, the proposed MPEHA is consisted of piezoelectric energy harvesting technique, multi-resonance array technique and magnetic force based nonlinear technique. Both theoretical and experimental studies are conducted to investigate the energy performance and to analyze the dynamic characteristics of MPEHA with snap-through motions among the multiple stable positions. As for theoretical study, a mathematic model of the potential function of the proposed harvester is established and the influence of magnetic force on the potential well configuration is quantitively investigated. As for experimental study, experiments including open-circuit voltage experiment and capacitance charging experiment are conducted using MPEHA with three-beam arrays. Our experimental study demonstrates that MPEHA has better performance than the traditional PEHA due to the magnetic coupling effect. Under excitation acceleration of 3 m s−2, the performance of bi-stable MPEHA is improved by 80.2%, compared with PEHA.

Structurae kann Ihnen derzeit diese Veröffentlichung nicht im Volltext zur Verfügung stellen. Der Volltext ist beim Verlag erhältlich über die DOI: 10.1088/1361-665x/ad7e86.
  • Über diese
    Datenseite
  • Reference-ID
    10801356
  • Veröffentlicht am:
    10.11.2024
  • Geändert am:
    10.11.2024
 
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