Energy Harvesting with Piezoelectric Flexible Composite Beams.
TURAN B. 2, AKDERE N. 2, KAYACI K. 3, ÖZCAN S. 3, DOGAN A. 1,2
1 Eski?ehir Technical University, Materials Science and Engineering Department, Eski?ehir, Turkey; 2 Nanotech Advanced Ceramic Company, Eski?ehir, Turkey; 3 Kaleseramik R&D Innovation Center, Çanakkale, Turkey
Electrical energy has grown in importance as a result of modern technology. Mechanical energy into electrical energy, piezoelectric materials can be employed as a sustainable energy source. The purpose of this project is to produce and store electrical energy from vibrations occurring in the piezoelectric material. Studies on using piezoelectric materials to generate energy from vibration oscillations have been conducted. Energy is obtained most effectively from these works because energy harvesting equipment is integrated into them, especially on the floors of busy areas like subway stops, dance floors, kitchens, and stairs. To supply sustainable renewable energy, KALESERAM?K, NANOTECH, and ESK??EH?R TECHN?CAL UN?VERS?TY collaborated on this project. In this study, With the aid of an oscilloscope, it was possible to measure the density of the energy values acquired from the piezoceramics thanks to the displacement and vibrations created on the flexible sinteflex with varying thicknesses. These energy readings reveal variations depending on the quantity of piezoceramic utilized, how it is positioned on the sinteflex, and the stress exerted on it. Through parameter optimization, the ideal combination was discovered. Following the selection of the mixture, manufacturing tests using PZT5H powder were conducted. By adjusting the quantity and pressing pressure of PZT5H powder, the most productive production was chosen. It was assembled after being put into the sinterflex with the selected production. In the Kale Seramik R&D Center, it was built using PZT5H ceramics. With the help of Arduino, a system was developed that can read a voltage in 10 ms, compute the load, gather it at the end of the day, and store it in milliampere-hours. Following daily, weekly, and monthly checks of the energy values received from each impact on Sinteflex, the application area was chosen. The 2D system studies in the study were terminated and 3D system designs were initiated since it was believed that the displacement caused by the floor tiles was insufficient for harvesting. Piezoelectric flexible composite beams were formed to create modules. The energy harvesting modules were put together for testing on the stair steps. With the aid of the rectifier circuit, the system in the composite beam structure stores the electrical energy produced by the vibration of the bimorphic (two-layer) fiber rods into the battery. The manufactured module contains 40 piezoelectric ceramics in total and 20 piezoelectric rods in a bimorphic configuration. Due to inherent losses in the rectification and charging circuits employed, 40 Volts peak to peak was measured from the ceramics while an AC, DC 3.6 Volt battery was charged as a result of the experiments. Because the level and intensity of vibration directly affect a product's efficiency, the battery charges more quickly when there is a high level of vibration in the surrounding area.