PEÑA ROSSELLÓ JULIÁN IGNACIO
Congresos y reuniones científicas
Título:
Enhancing energy harvesting by coupling monostable oscillators
Autor/es:
JULIÁN IGNACIO PEÑA ROSSELLÓ; ROBERTO R. DEZA; HORACIO S. WIO; PETER HÄNGGI
Reunión:
Conferencia; Micro Energy 2017; 2017
Resumen:
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.
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.
