AUTHORS: Sunithamani S, Lakshmi P., Eba Flora E.

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ABSTRACT: Piezoelectric energy harvester converts mechanical vibration into electrical energy via piezoelectric effect. Geometry of the energy harvester play vital role in scavenging energy from vibration. Therefore six different geometries are simulated. The voltage produced by the energy harvester has to be either stored in a storage unit like capacitor/battery or it should be transferred. Voltage produced by energy harvester is ac and it is rectified and then regulated using buck converter. In a buck converter application, it is desired to obtain a constant output voltage v (t) = V, in spite of disturbances in vg (t), iload(t) and in the converter circuit parameters. To obtain constant output voltage a compensator device of the system is designed by using series compensation. The stability of the closed-loop Buck system has been greatly improved by using series compensator.

KEYWORDS: Piezoelectric energy harvester, Finite element analysis, different cantilever structures, compensator

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[13] Sunithamani S, Lakshmi P, (2014) “Simulation study on performance of MEMS piezoelectric energy harvester with optimized substrate to piezoelectric thickness ratio”, Journal of Microsystem technologies. DOI 10.1007/s00542-014-2226-4.