J. Phys. IV France
Volume 128, September 2005
Page(s) 177 - 186

J. Phys. IV France 128 (2005) 177-186

DOI: 10.1051/jp4:2005128027

A comparison between several approaches of piezoelectric energy harvesting

E. Lefeuvre, A. Badel, A. Benayad, L. Lebrun, C. Richard and D. Guyomar

Laboratoire de Génie Électrique et Ferroélectricité, INSA de Lyon, 69621 Villeurbanne Cedex, France

This paper compares the performances of vibration-powered electrical generators using a piezoelectric ceramic and a piezoelectric single crystal associated to several power conditioning interfaces. A new approach of the piezoelectric power conversion based on a non linear voltage processing is presented, leading to three novel high-performance techniques. Theoretical predictions and experimental results show that the novel techniques may increase the power harvested above 800% compared to standard techniques.

© EDP Sciences 2005