Modeling the Cantilever Type PEG with Proof Mass and Active Pinching by Using the Porous Piezoceramics with Effective Properties

It is considered an energy harvesting device. The results of numerical simulation of the output parameters of a cantilever type piezoelectric generator (PEG) with a proof mass and an active base are presented. The piezogenerator uses two types of piezoelectric elements: (i) bimorph piezoelectric elements and (ii) cylindrical piezoelectric elements. Piezoelectric elements with effective properties for different porosities of the one type of piezoelectrics were used in the simulation. The results of modal and harmonic calculations of oscillations of a piezoelectric generator are presented. The analysis of output voltage and power on the bimorph and piezoelectric elements of the active base is carried out. Its efficiency was determined when using piezoelements with effective properties of various porosities.