TITLE:
Disk Bimorph-Type Piezoelectric Energy Harvester
AUTHORS:
V. Tsaplev, R. Konovalov, K. Abbakumov
KEYWORDS:
Piezoelectric Energy Harvester, Umbrella Bimorph Plate, Amplitude-Frequency Characteristic, Flexural Vibration, Specific Power, Output Voltage
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.3 No.4,
April
13,
2015
ABSTRACT: The study of the experimental investigation
of a disk-type piezoelectric energy harvester presented. The harvester contains
disk bimorph piezoceramic element of the umbrella form and contains two disk
PZT plates. The element is excited at the base point at its center. The element
is supplied by a loading ring mass to decrease its resonance frequency. The
dependences of the vibration displacement along the radii of the bimorph and
the ring mass from the frequency of excitation are presented and the output
voltage frequency response is also presented as well. The idle mode and the
load duty are investigated. The value of the internal resistance of the
harvester is obtained using the load characteristic. The piezoelectric specific
power is estimated experimentally.