| Autor: |
Akopyan, V. A., Parinov, I. A., Rozhkov, E. V., Zakharov, Yu. N., Shevtsova, M. S. |
| Zdroj: |
Advanced Materials: Physics, Mechanics & Applications; 2014, p355-363, 9p |
| Abstrakt: |
The paper presents new estimation criterion of energetic efficiency for the cantilever type piezoelectric generators (PEGs) and its comparison with the known criteria. The generalized form of the proposed criterion allows us to define the energetic efficiency for the several configurations of PEGs in which different oscillation modes of cantilever plate are realized. Analysis of calculated values of the generalized criterion for the cantilever type PEGs of various configurations shows that their maximal output electric power could be reached for PEGs demonstrating most great value of the criterion. It is stated that if the value of generalized characteristic for some PEGs type exceeds its value two times compared to other their types, then its output electric power surpasses the power of others more than one order of magnitude. In particular, it is shown that PEGs with substrates made from high stiffness materials have higher output power comparing to flexible, e.g. fiberglass material. Moreover, the upper boundary is found for resonance oscillation frequencies of cantilever plate, above of which proof mass of PEG does not influence on its output power. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
