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Enhancing energy harvesting by coupling monostable oscillators

AuthorsPeña Rosselló, Julián; Wio, Horacio S. ; Deza, R. R.; Hänggi, Peter
Issue Date2017
PublisherSpringer Nature
CitationEuropean Physical Journal B 90: 34 (2017)
AbstractThe performance of a ring of linearly coupled, monostable nonlinear oscillators is optimized towards its goal of acting as energy harvester – through piezoelectric transduction – of mesoscopic fluctuations, which are modeled as Ornstein-Uhlenbeck noises. For a single oscillator, the maximum output voltage and overall efficiency are attained for a soft piecewise-linear potential (providing a weak attractive constant force) but they are still fairly large for a harmonic potential. When several harmonic springs are linearly and bidirectionally coupled to form a ring, it is found that counter-phase coupling can largely improve the performance while in-phase coupling worsens it. Moreover, it turns out that few (two or three) coupled units perform better than more.
Publisher version (URL)https://doi.org/10.1140/epjb/e2017-70703-x
Identifiersdoi: 10.1140/epjb/e2017-70703-x
e-issn: 1434-6036
issn: 1434-6028
Appears in Collections:(IFCA) Artículos
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