The Piezoelectric Phenomenon in Energy Harvesting Scenarios: A Theoretical Study of Viable Applications in Unbalanced Rotor Systems

Adolfo Dannier, Gianluca Brando and Francesca Nikita Ruggiero
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Adolfo Dannier: Department of Electrical Eng. and IT, DIETI, University of Naples, Federico II, 80125 Naples, Italy
Gianluca Brando: Department of Electrical Eng. and IT, DIETI, University of Naples, Federico II, 80125 Naples, Italy
Francesca Nikita Ruggiero: Department of Electrical Eng. and IT, DIETI, University of Naples, Federico II, 80125 Naples, Italy

Energies, 2019, vol. 12, issue 4, 1-20

Abstract: The present paper deals with the promising energy harvesting applications of a composite piezoelectric metal support that is properly designed for the rotor of a mechanical system. The aim is to determine whether the vibrational power coming from the static residual imbalance, which is generally considered to be an undesired and useless side-effect of the rotation, can be converted into electric power and then stored to be used in other applications. The analysis, starting from the Jeffcott rotor model and the piezoelectric constitutive equations, has been carried out by developing an approximated linear model of a piezoelectric support, in order to theoretically evaluate the performance and the feasibility of the proposed system. The accuracy of the exploited analytical model has been validated for both static and dynamic operations by 3D Ansys ® Mechanical APDL. Finally, a MatLab ® /Simulink ® model has been built to simulate the electric behavior of the piezoelectric material, and to estimate the power that it is possible to extract via an alternative/direct current converter (AC/DC converter). The numerical results achieved confirm the effectiveness of the proposed energy-harvesting system.

Keywords: piezoelectricity; electric motor; energy harvesting; Jeffcott rotor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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