The current advances in ultra-low power design let foresee great opportunities in energy harvesting platforms for self-powered systems. This paper presents two conversion schemes based on active control for harvesting energy with a higher efficiency than traditional passive approaches. A prototype has been developed and the approaches have been validated for piezoelectric energy harvesters with both measurements in realistic conditions (i.e. irregular vibrations) and mixed-signal circuital simulations. The proposed converters may increase harvested power of at least 25% and up to three times with respect to a passive rectifier. The maximum harvested power is about 40uW in presence of weak vibrations (aRMS = 1.18 m/s2) obtained in a train passenger car in motion with a 28x6x0.5mm3 cantilever made of PZT-A4E with a 20g mass attached at the free end.
A. Romani, C. Tamburini, R. P. Paganelli, A. Golfarelli, R. Codeluppi, M. Dini, et al. (2010). Actively controlled power conversion techniques for piezoelectric energy harvesting applications. NEW YORK : Springer [10.1007/978-90-481-3606-3_72].
Actively controlled power conversion techniques for piezoelectric energy harvesting applications
ROMANI, ALDO;PAGANELLI, RUDI PAOLO;GOLFARELLI, ALESSANDRO;CODELUPPI, ROSSANO;DINI, MICHELE;SANGIORGI, ENRICO;TARTAGNI, MARCO
2010
Abstract
The current advances in ultra-low power design let foresee great opportunities in energy harvesting platforms for self-powered systems. This paper presents two conversion schemes based on active control for harvesting energy with a higher efficiency than traditional passive approaches. A prototype has been developed and the approaches have been validated for piezoelectric energy harvesters with both measurements in realistic conditions (i.e. irregular vibrations) and mixed-signal circuital simulations. The proposed converters may increase harvested power of at least 25% and up to three times with respect to a passive rectifier. The maximum harvested power is about 40uW in presence of weak vibrations (aRMS = 1.18 m/s2) obtained in a train passenger car in motion with a 28x6x0.5mm3 cantilever made of PZT-A4E with a 20g mass attached at the free end.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
