Comparison between piezoelectric plate and hollow cylinder-based energy harvesters

Piezoelectric based harvesters are used to convert ambient mechanical vibration to electrical energy. In this work, CoventorWare 3D simulation tool has been used to compare the performance differences between piezoletric plate and hollow cylinder energy harvester. The comparison I conducted in terms of harvested open circuit voltage, input impedance, maximum displacement and mechanical resonance for both structures. It has been found that deflection of hollow cylinder is higher than the plate and delivers more power to the load under the same applied conditions and pressures.