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Design and Power Output Characteristics of an EYE-type Piezoelectric Energy Harvester

EYE-type 압전 발전소자의 설계 및 출력특성

  • Received : 2016.01.08
  • Accepted : 2016.01.24
  • Published : 2016.02.01

Abstract

We present the results of a study of a piezoelectric generator that generates electricity by the application of tension to an element. A device is named "EYE-type generator". The EYE-type generator consists of a rectangular ceramic and two elastic body plates that are attached to upper and lower surfaces of a ceramic. If tension is applied to both ends of the elastic body, that tension is transformed to pressure on the ceramic through a change in the form of the elastic body, causing a piezoelectric effect whereby electricity is generated by the ceramic. This generator is relatively durable because a forces are not applied directly to the ceramic. We examined dependencies of the generator's output characteristics on the size of the ceramic and elastic body. A resonance and output characteristics were analyzed by using a finite element method. The generator was fabricated based on results of the analysis, and this was attached to a frequency-controllable vibrator to measure the output characteristics. The measured results were compared with results of the simulation, and the results pointed to the practicality of the design.

Keywords

Energy harvester;Piezoelectric;EYE type;FEM

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Acknowledgement

Supported by : 중소기업청, 한국연구재단