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This paper compares the performances of a vibration-powered 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(More)
Recent trends in energy conversion mechanisms have demonstrated the abilities of electrostrictive polymers for converting mechanical vibrations into electricity. In particular, such materials present advantageous features such as a high productivity, high flexibility, and ease of processing; hence, the application of these materials for energy harvesting(More)
In this study, electric field-induced thickness strain of pure polyurethane (PU), carbon black C/PU composite and ferroelectric PZT/PU composite have been compared. The three compositions have been submitted to whether a bipolar electric field (0.1 Hz), whether a voltage step. Both C and PZT loading improves the strain of the pure polymer matrix. However,(More)
The present article proposes a dynamical model to obtain ferroelectric hysteresis dynamics based on fractional derivatives (Polarization versus Electric field curves). The consideration of a fractional derivative term widely increases the frequency bandwidth of the accuracy of the traditional hysteresis models. For PZT bulk ceramics, the order of the(More)
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