Simulation of Synchronized-Switching Method Energy Harvester Including Accurate Piezoceramic Nonlinear Behavior

Benjamin Ducharne, Bhaawan Gupta and Grzegorz Litak
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Benjamin Ducharne: Institut National des Sciences Appliquées de Lyon, Laboratoire Génie Electrique et Ferroélectricité LGEF, 8 rue de la Physique, 69621 Villeurbanne CEDEX, France
Bhaawan Gupta: Institut National des Sciences Appliquées de Lyon, Laboratoire Génie Electrique et Ferroélectricité LGEF, 8 rue de la Physique, 69621 Villeurbanne CEDEX, France
Grzegorz Litak: Department of Automation, Lublin University of Technology, Nadbystrzycka 36, PL-20-618 Lublin, Poland

Energies, 2019, vol. 12, issue 23, 1-12

Abstract: Synchronized-switching techniques have significantly enhanced the harvested energy from semipassive and active surrounding ambient mechanical vibration harvesters. They have allowed a large improvement of vibration-control efficiency using piezoelectric devices. Unfortunately, for such techniques, dielectric limitations appear as soon as the piezoceramic operates under external solicitation of higher amplitudes and frequencies. Under extreme conditions, active materials exhibit nonlinear behavior related to dielectric hysteresis that significantly reduces their performance. In this work, we focus on this nonlinear behavior and its consequences in terms of system efficiency. We apply a realistic model including accurate material laws. In such models, a constant piezoelectric coupling d 31 is not suitable as a coefficient anymore and it should be replaced by a function depending on the polarization level through the active material. The response of more realistic systems including hysteresis was taken into account and compared with the basic model, where a constant d 31 was considered.

Keywords: energy harvesting; hysteretic behavior; piezoelectric; nonlinear vibration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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