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Vol. 205, Issue 10, October 2016, pp. 16-24

 

Bullet

 

Piezoelectric Structures and Low Power Generation Devices
 

Irinela CHILIBON

National Institute of Research and Development for Optoelectronics, INOE-2000, 409, Atomistilor Street, P. O. MG-5,
Bucharest-Magurele, zip code 077125, Romania
Tel./fax: 040214574522

E-mail: qilib@yahoo.com

 

Received: 25 July 2016 /Accepted: 30 September 2016 /Published: 31 October 2016

Digital Sensors and Sensor Sysstems

 

Abstract: A short overview of different piezoelectric structures and devices for generating renewable electricity under mechanical actions is presented. A vibrating piezoelectric device differs from a typical electrical power source in that it has capacitive rather than inductive source impedance, and may be driven by mechanical vibrations of varying amplitude. Several techniques have been developed to extract energy from the environment. Generally, “vibration energy” could be converted into electrical energy by three techniques: electrostatic charge, magnetic fields and piezoelectric. Mechanical resonance frequency of piezoelectric bimorph transducers depends on geometric size (length, width, and thickness of each layer), and the piezoelectric coefficients of the piezoelectric material. Manufacturing processes and intended applications of several energy harvesting devices are presented.

 

Keywords: Renewable electricity, Energy harvesting, Scavenging energy, Vibration energy, Generator, Converter, Piezoelectric.

 

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