Study of Piezoelectric Spring Harvesters

Abstract

The paper presents a study of two piezoelectric spring harvesters conducted with the aim to determine the optimal construction for which better electrical characteristics are obtained. The harvesters under consideration consist of springs and concentrated masses, attached to piezoelectric transformers. Modeling by ANSYS has been performed, whereas the horizontal deviation of the mechanical system has been obtained and the charge, accumulated on the electrodes of the piezoelectric plates has been calculated. Experimental tests for validating the developed model have been carried out.