Experimental Study of the Use of Piezoelectric in a Rotational Energy Harvesting Mechanism

Piezoelectric have been widely used as an energy harvester to generate electrical energy. However, the applications are still limited as the energy produced is still small. A rotational energy harvesting mechanism is developed to enhance the energy production. The purpose of this study is to analyze the effect of the number of piezoelectric used in a rotational energy harvesting mechanism. The piezoelectric is excited by the force impelled from magnetic pairs. The number of piezoelectric used is in three variations; 1 piece of piezoelectric, 2 pieces of piezoelectric and 4 pieces of piezoelectric. The experimental result shows that the more piezoelectric used, the higher the voltage resulted. The lowest is the mechanism embedded with one piezoelectric which produced 2.02 V at the speed of 1060 rpm. The highest is produced by the four pieces of piezoelectric which produced 7.77 V at the speed of 909 rpm.