Efficiency of energy harvesting out of colored Lévy fluctuations by a harmonic oscillator with piezoelectric transducer

GIULIANO, M. E.; SÁNCHEZ, A. D.; COMBI, B.; DEZA, R. R.

EUROPHYSICS LETTERS

EPL ASSOCIATION

Año: 2023 vol. 144 p. 11006 - 110066

0295-5075

The efficiency of a linear kinetic energy harvester by piezoelectric transduction —whendriven by colored α-stable Lévy noise— is the focus of this study. Analytical results are obtainedfor the harvested power (in the adiabatic approximation ¨x ∼=0 and for very large load circuit’s timeconstant τp), which are accurately validated by numerical simulations. In addition, an analyticalexpression is obtained for the characteristic time the system takes to reach a stationary regime;this information is crucial to calculate averaged quantities through simulations, given the largedispersion between realizations due to the infinite variance of the Lévy noise.