Publisher : The Korean Institute of Electrical and Electronic Material Engineers
DOI : 10.4313/JKEM.2016.29.2.84
Title & Authors
Design and Power Output Characteristics of an EYE-type Piezoelectric Energy Harvester Jeong, Seong-Su; Lee, Byeong-Ha; Kang, Shin-chul; Park, Tae-Gone;
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.
Energy harvester;Piezoelectric;EYE type;FEM;
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