A new technique for piezoelectric energy harvesting derived from synchronous electric charge extraction (SECE) is introduced. The proposed quasi-synchronous electric charge extraction (QSECE) introduces a probability of activation and a random pulse-position modulation on each charge extraction cycle, in order to reduce undesired damping effects associated to SECE at resonance by spreading the spectrum of control signals outside the resonance region of the transducer. Experimental measurements show that QSECE extracts 29% more energy than SECE, while also decreasing switching power consumption.

Quasi-synchronous charge extraction for improved energy harvesting from highly coupled piezoelectric transducers / Aldo Romani; Matteo Filippi. - In: PROCEDIA ENGINEERING. - ISSN 1877-7058. - ELETTRONICO. - 87:(2014), pp. 1525-1528. [10.1016/j.proeng.2014.11.589]

Quasi-synchronous charge extraction for improved energy harvesting from highly coupled piezoelectric transducers

ROMANI, ALDO;FILIPPI, MATTEO
2014

Abstract

A new technique for piezoelectric energy harvesting derived from synchronous electric charge extraction (SECE) is introduced. The proposed quasi-synchronous electric charge extraction (QSECE) introduces a probability of activation and a random pulse-position modulation on each charge extraction cycle, in order to reduce undesired damping effects associated to SECE at resonance by spreading the spectrum of control signals outside the resonance region of the transducer. Experimental measurements show that QSECE extracts 29% more energy than SECE, while also decreasing switching power consumption.
2014
Quasi-synchronous charge extraction for improved energy harvesting from highly coupled piezoelectric transducers / Aldo Romani; Matteo Filippi. - In: PROCEDIA ENGINEERING. - ISSN 1877-7058. - ELETTRONICO. - 87:(2014), pp. 1525-1528. [10.1016/j.proeng.2014.11.589]
Aldo Romani; Matteo Filippi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/366734
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