Detail publikace

Investigation of Using Free-Standing Thick-Film Piezoelectric Energy Harvesters to Develop Wideband Devices

BAI, Y. MEGGS, C. BUTTON, T.

Originální název

Investigation of Using Free-Standing Thick-Film Piezoelectric Energy Harvesters to Develop Wideband Devices

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper is concerned with the wideband behavior of single-frequency and multi-frequency freestanding thick-film piezoelectric energy harvesters. The energy harvesting devices have been fabricated and brief fabrication information is provided. The individual harvesters have been combined with either symmetric or asymmetric tip masses, with some being connected together to form a harvester array. Testing has been undertaken using harmonic vibrations with a wide range of frequencies and accelerations, and also using a random machinery vibration, and data have been recorded in terms of un-rectified and rectified open-circuit voltage, output power with matched resistive loads, peak-to-peak tip displacement, and even charging rates of capacitors. As a general result, the individual harvesters with asymmetric tip masses have vibrated nonlinearly below and in the vicinity of the resonant frequencies. An individual harvester vibrating at the resonant frequency with 0.5 g acceleration has been able to charge a 1000 F capacitor to 1V within 12 min and to 1.5Vwithin 30 min. Also, the harvester array has exhibited a wideband response, where an open-circuit voltage of above 0.8V has been provided within a certain range of frequencies. Finally, the harvester array has successfully charged a capacitor on a vibrating test sieve shaker, proving the feasibility of the proposed device in real applications.

Klíčová slova

Piezoelectric thick-film; array; wideband; nonlinear; charging capacitor; machinery vibration.

Autoři

BAI, Y.; MEGGS, C.; BUTTON, T.

Rok RIV

2014

Vydáno

2. 10. 2014

ISSN

0219-4554

Periodikum

International Journal of Structural Stability and Dynamics

Ročník

14

Číslo

8

Stát

Singapurská republika

Strany od

1440016-1

Strany do

1440016-12

Strany počet

12