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Design of a Piezocomposite Generating Element and Its Characteristics

압전-복합재료 발전 소자의 설계 및 특성

  • Tien, Minh Tri (Dept. of Advanced Technology Fusion, Konkuk Univ.) ;
  • Kim, Jong-Hwa (Dept. of Advanced Technology Fusion, Konkuk Univ.) ;
  • Goo, Nam-Seo (Dept. of Advanced Technology Fusion, Konkuk Univ.)
  • Received : 2010.01.11
  • Accepted : 2010.05.26
  • Published : 2010.07.01

Abstract

Unused energy derived from sources in nature can be captured and stored for future use, for example, to recharge a battery or power a device; this process of capturing and storing energy is called energy harvesting. Extensive investigations are being carried out in order to use piezoelectricity to harvest the energy generated by body movements or machine vibrations. This paper presents a simple analytical model that describes the output voltage effectiveness of a Piezocomposite Generating Element (PCGE) from vibration and its experimental verification. PCGE is composed of carbon/epoxy, PZT, and glass/epoxy layers. During the manufacturing process, the stacked layers were cured at $177^{\circ}C$ in an autoclave, which created residual stresses in PCGE and altered the piezoelectric properties of the PZT layer. In the experiments, three kinds of lay-up configurations of PCGE were considered to verify the proposed prediction model and to investigate its capability to convert oscillatory mechanical energy into electrical energy. The predicted performance results are in good agreement with observed experimental ones.

Keywords

Energy Harvesting;Piezo-Composite Generating Element

Acknowledgement

Supported by : 국토해양부

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