Publication

Abstract : Energy harvesting is the technology which scavenges energy from the ambient sources of energy. Several researches are moving in the field of energy harvesting to get maximum output power from the ambient sources. This paper deals with the optimization on the dimensions of a piezoelectric energy harvester(PEH) which can work at low frequency using different piezoelectric materials. An analysis of a rectangular block-shaped geometry was done with its height and length varied to study the effect of length and height of the geometry with its natural frequency. Thus, the optimized geometry was used as a piezoelectric energy harvester by using a fixed constraint at one end. An electrical circuit with a resistor is connected to the PEH device, which measures the output voltage and current through the device. An optimized dimension of 100 mm 1 mm for the nanogenerator with PVDF material yielded a good performance including maximum current and voltage at low frequencies of 0–30 Hz. The study of perturbations was implemented on the optimized geometry of the piezoelectric material, which reduced its resonant frequency to 11.96 from 1373.05 Hz.