This paper compares the performances of a vibrationpowered electrical generators using PZT piezoelectric ceramic associated to two different power conditioning circuits. A new approach of the piezoelectric power conversion based on a nonlinear voltage processing is presented and implemented with a particular power conditioning circuit topology. Theoretical predictions and experimental results show that the nonlinear processing technique may increase the power harvested by a factor up to 4 compared to the Standard optimization technique. Properties of this new technique are analyzed in particular in the case of broadband, random vibrations, and compared to those of the Standard interface.
@article{arxiv.0711.3309,
title = {Optimization of Piezoelectric Electrical Generators Powered by Random Vibrations},
author = {E. Lefeuvre and A. Badel and C. Richard and L. Petit and D. Guyomar},
journal= {arXiv preprint arXiv:0711.3309},
year = {2007}
}
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