Enhancing energy harvesting by coupling monostable oscillators

Rosselló, J. I. Peña; Wio, Horacio S.; Deza, Roberto R.; Hänggi, Peter

doi:10.1140/epjb/e2017-70703-x

Cited by 8 publications

(4 citation statements)

References 34 publications

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“…The eciency in power conversion η% is defined to evaluate the overall eciency of the conversion from the power supplied by the noise to the final net electrical power [31,27,52]. That is,…”

Section: Influence Of the Nonlinear Stiness Coecients On Harvested ...mentioning

confidence: 99%

Enhancement of tristable energy harvesting using stochastic resonance

Jin¹,

Xiao²,

Zhang³

2018

J. Stat. Mech.

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In this paper, stochastic resonance (SR) is exploited within a tristable electromechanical coupled system to enhance energy harvesting. Assuming that the eective capacitance of the piezoelectric element can be neglected, the coupled electromechanical equations are converted to a secondorder stochastic dierential equation. Using the adiabatic approximation and the linear response theory, the spectral amplification of the equivalent tristable mechanical system is obtained to characterize the SR. It is observed that the spectral amplification exhibits a maximum as a function of the nonlinear stiness coecients and noise intensity. That is, both parameter-optimized SR and traditional SR are found in this system, which can be used to amplify the amplitude of the system response and enhance the performance of nonlinear vibration energy harvesting. Moreover, the eciency in power conversion and the RMS voltage obtained under the SR eect are much higher than those harvested under ambient random vibration alone. The theoretical results are well verified through the numerical simulations of the original electromechanical coupled system.

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Section: Influence Of the Nonlinear Stiness Coecients On Harvested ...mentioning

confidence: 99%

Enhancement of tristable energy harvesting using stochastic resonance

Jin¹,

Xiao²,

Zhang³

2018

J. Stat. Mech.

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“…In turn, Rosselló et al [26] tried to improve the performance of energy harvesting considering a ring of linearly coupled, monostable nonlinear oscillators acting as an energy harvester-through piezoelectric transduction-of mesoscopic fluctuations, which were modeled as Ornstein-Uhlenbeck noise.…”

Section: Introductionmentioning

confidence: 99%

Power Efficiency of Energy Harvester Driven by Harmonic Excitation with Amplitude Perturbation

Kucab

Górski

2019

Advances in Materials Science and Engineering

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In this paper, we examine the influence of the background’s stochastic excitations on an output power generated by using an energy harvester. The harvester is composed of two magnets attached to a piezoelastic oscillators separated by a distance Δ from the static magnets fastened directly to the device. We also introduce the parameter α which describes the mass ratio of moving magnets. We examine the output power for different excitation frequencies, different values of α, and different amplitudes δ0 of the stochastic force. We also analyze the influence of δ0 and Δ on the effective output power (EOP), the mean value of output power averaged over the considered frequencies, produced by using the harvester. We have observed that increasing δ0 causes the growth of generated mean power, especially in the low-frequency regime, while the maximum power near the resonance frequency remains unchanged. The EOP also grows with increasing δ0 for all examined values of α. The environment’s stochastic behavior improves slightly the harvester’s efficiency as compared to the purely harmonic case. Analyzing the dependence of EOP on Δ, we observed the maximum which appears at values of Δ corresponding to the situation when the system starts to work in the unsynchronized regime.

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“…Many studies in the biological field include this type of noise [26][27][28][29], featuring, e.g., noise-induced chimera states (here meaning coexistence of coherence and incoherence) in a smallworld Hindmarsh-Rose neuronal network [28]. Also, the heartbeat has been seen to be well modeled using the Lévy process [30,31], and heart-mounted piezoelectric sensors are being studied to power pacemakers [32][33][34] since as shown in [35,36], this type of noise improves the performance of piezoelectric harvesters (the more frequent occurrence of large jumps in Lévy noises translates into a larger r.m.s. voltage).…”

mentioning

confidence: 99%

“…For example, finding the suitable time scale at which the system can be thought to have reached steady state, given the parameters of the harvester. In a companion work, we address the efficiency under symmetric OULP of nonlinear energy harvesters obeying shallow monostable potentials [35,36]. Also, the effect of asymmetric OULPs [40] will be studied.…”

mentioning

confidence: 99%

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

Giuliano,

Sánchez,

Combi

et al. 2023

EPL

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The efficiency of a linear kinetic energy harvester by piezoelectric transduction—whendriven by colored α−stable Lévy noise—is the focus of this study. Analytical results are obtainedfor the harvested power (in the adiabatic approximation ẍ ∼ 0 and for very large load circuit’s timeconstant τp ), which are accurately validated by numerical simulations. In addition, an analyticalexpression 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 largedispersion between realizations due to the infinite variance of the Lévy noise.

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Enhancing energy harvesting by coupling monostable oscillators

Cited by 8 publications

References 34 publications

Enhancement of tristable energy harvesting using stochastic resonance

Enhancement of tristable energy harvesting using stochastic resonance

Power Efficiency of Energy Harvester Driven by Harmonic Excitation with Amplitude Perturbation

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

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