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Development of Electric Power Measurement for Energy Harvesting Using Unimorph-Type Piezoceramics

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Abstract:

In this study, a new electric power generation measurement system was developed for piezoelectric energy harvesting using unimorph-type piezoceramics. Relationships between electric power and material constants such as d33, d31, g31, k31, e33T/e0, s11E, Qe and Qm were investigated using various lead zirconium titanate (Pb(Zr,Ti)O3, PZT) ceramics with different material constants. Using the equipment, pulse-type stress was applied to unimorph-type piezoceramics. Then, optimum measurement conditions were determined. Under these conditions, the electric power for piezoelectric energy harvesting was measured as a function of the material constants. Finally, it was clarified that for piezoelectric energy harvesting using a unimorph-type device, the figure of merit was combination of the 3 kinds of material constants such as large d31, small e33T/e0, and large s11E.

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Periodical:

Key Engineering Materials (Volume 485)

Pages:

173-176

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.485.173

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Online since:

July 2011

Authors:

Yoshikazu Shimura, Petr Pulpan, Ichiro Fujii, Kouichi Nakashima, Satoshi Wada

Keywords:

Electric Power Measurement System, Figure of Merit (FOM), Material Constants, Multiple Regression Analysis, Piezoelectric Energy Harvesting, Unimorph-Type Device

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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