Abstract

RINCON-JARA, R. I.; AMBROSIO, R.; JIMENEZ, A.  and  TORRES, R.. Modelado analítico de un micro generador de potencia basado en tecnología MEMS y materiales piezoeléctricos. Superf. vacío [online]. 2012, vol.25, n.2, pp.110-116. ISSN 1665-3521.

In this work is presented an analytical modeling for a power microgenerator in order to obtain the most important figures of merit such as: voltage, generated power and displacement, in a harvesting energy system. The model compares three different piezoelectric materials: Lead Zirconate Titanate (PZT), Zinc Oxide (ZnO) and Barium Titanate (BaTiO₃), taking in account the properties of materials and the parameters of the structure for designing more efficient harvesting devices. The modeling was done with a mass-spring-damper piezo system in conjunction with a storage energy system. The results of simulation showed that the PZT generated more power in comparison with the others, and the ZnO generated more voltage, which is an advantage where a system requires operate with more voltage than current. This analytical modeling was capable to predict the mechanical-electrical behavior of a piezoelectric microgenerator, which is very helpful in the design of MEMS harvesting devices for applications where the energy produced by the human movements can be collected.

Keywords : MEMS; Harvesting devices; Piezoelectric materials.