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arXiv · 1612.09209

Enhancing energy harvesting by coupling monostable oscillators

J. I. Pena Rossello·H. S. Wio·R. R. Deza·P. Hanggi
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Abstract

The 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.

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J. I. Pena Rossello, H. S. Wio, R. R. Deza, P. Hanggi. 2016-12-29. Enhancing energy harvesting by coupling monostable oscillators. https://doi.org/10.1140/epjb%2Fe2017-70703-x

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