Predictive energy harvesting from mechanical vibration using a circular piezoelectric membrane

Abstract

In this study, we have investigated the capability of harvesting electrical energy from mechanical vibrations in a dynamic environment thanks to a circular piezoelectric membrane transducer. We have established an electromechanical model to predict the ability of the transducer to produce electricity. We have expressed a direct relation between the voltage able to be harvested and the acceleration of the surrounding vibrations. We have performed experiments to validate our model with a macroscopic 25 mm diameter piezoelectric membrane.

Energy harvesting with a cymbal type piezoelectric transducer from low frequency compression

“…Various potential piezoelectric materials and structures have been tested for energy harvesting applications because the target specifications and environmental conditions strongly dictate feasible material and design options [8][9][10][11][12][13][14]. One very challenging area is energy harvesting directly from human body, thus enabling charging of portable electronics.…”

Electric power generation using vibration of a polyurea piezoelectric thin film

“…Electric power generation using piezoelectric elements is also a technique that utilizes the piezoelectric effect [1][2][3][4][5][6][7][8][9]. Untapped energy in natural phenomena, such as wind and tidal energy, and the vibrations generated on structures such as a bridge, could be utilized by application of this energy harvesting technique.…”

Energy harvesting using piezoelectric materials and high voltage scavenging circuitry

“…According to (8), for 2 = α and 5 . 0 = γ , which is practically feasible in high voltage applications, an increase of 14% over the original parallel voltage inversion technique will be observed.…”

“…In this section, the cantilever beam is studied. Although different mechanical structures have been presented [7][8] to transfer the vibration energy to piezoelectric material, the cantilever beam is more attractive for it's relatively low resonance frequencies and relatively high average strain for a given force input [7]. Different cantilever beam geometries are depicted in Fig.…”