Toward energy harvesting using active materials and conversion improvement by nonlinear processing

Daniel Guyomar; Adrien Badel; Elie Lefeuvre; Claude Richard

doi:10.1109/tuffc.2005.1428041

Toward energy harvesting using active materials and conversion improvement by nonlinear processing

IEEE Trans Ultrason Ferroelectr Freq Control. 2005 Apr;52(4):584-95. doi: 10.1109/tuffc.2005.1428041.

Authors

Daniel Guyomar¹, Adrien Badel, Elie Lefeuvre, Claude Richard

Affiliation

¹ Laboratoire de Génie Electrique et Ferroélectricité, Institut National des Sciences Appliquées de Lyon, 69621 Villeurbanne, France.

PMID: 16060507
DOI: 10.1109/tuffc.2005.1428041

Abstract

This paper presents a new technique of electrical energy generation using mechanically excited piezoelectric materials and a nonlinear process. This technique, called synchronized switch harvesting (SSH), is derived from the synchronized switch damping (SSD), which is a nonlinear technique previously developed to address the problem of vibration damping on mechanical structures. This technique results in a significant increase of the electromechanical conversion capability of piezoelectric materials. Comparatively with standard technique, the electrical harvested power may be increased above 900%. The performance of the nonlinear processing is demonstrated on structures excited at their resonance frequency as well as out of resonance.