Simulation Analysis of Interface Circuits for Piezoelectric Energy Harvesting with Damped Sinusoidal Signals and Random Signals
Abstract: Various interface
circuits for collecting the energy of piezoelectric cantilever beams have been widely
investigated. Such circuits include the standard interface, series synchronized
switch harvesting interface circuit, parallel synchronized switch harvesting
interface, synchronized charge extraction interface, and others. Most studies
focus on the performance of different interface circuits with standard sinusoidal
excitations. However, in real situations where constant harmonic vibrations are
not present, the equivalent voltage from piezoelectric cantilever beams with
excitations is not necessarily sinusoidal. In the present study, a simulation
analysis of four different interface circuits with signal sources that are both
damped sinusoidal and random was performed using Matlab and PSpice. The results
show that the interface circuits have improved performance under low load
resistance values with damped sinusoidal signal. In addition, the parallel and
series synchronized switch harvesting interface circuits may perform well in
collecting piezoelectric energy with random excitations.
Keywords: piezoelectric energy
harvesting, interface circuit, damped sinusoidal signal, random signal, SLPS
Author: Shuai Pang, Wenbin Li,
Jiangming Kan
Journal Code: jptkomputergg150166
