Abstract
ABSTRACTAmong the various techniques of power scavenging, piezoelectric energy harvesting usually has more power density. Although piezoceramics are usually more efficient than other piezoelectric materials, since they are very brittle and fragile, researchers are looking for alternative materials. Recently Cellulose Electro-active paper (EAPap) has been recognized as a smart material with piezoelectric behavior that can be used in energy scavenging systems. The majority of researches in energy harvesting area, use unimorph piezoelectric cantilever beams. This paper presents an analytical solution based on distributed parameter model for partially covered pieoelectric cantilever energy harvester. The purpose of the paper is to describe the changes in generated power with damping and the load resistance using analytical calculations. The analytical data are verified using experiment on a vibrating cantilever substrate that is partially covered by EAPap films. The results are very close to each other. Also asymptotic trends of the voltage, current and power outputs are investigated and expressions are obtained for the extreme conditions of the load resistance. These new findings provide guidelines for identification and manipulation of effective parameters in order to achieve the efficient performance in different ambient source conditions.
Highlights
IntroductionRecovering even a fraction of this energy would have a significant economic and environmental impact
There are small amounts of wasted energy that could be useful if captured
The aim of this paper is developing the solution for partially covered piezoelectric energy harvesters and discussing the load resistance size and damping effects on the output voltage, current and power of a cantilever beam that is partially covered by Electro-active paper (EAPap) piezoelectric material in a wide range of frequencies
Summary
Recovering even a fraction of this energy would have a significant economic and environmental impact. This is where energy harvesting (EH) comes in. Energy scavenging, is a process that captures small amounts of energy that would otherwise be lost as heat, light, sound, vibration or movement. The captured energy can be used for improving the efficiency and enabling modern technologies such as wireless and batteryless sensor networks. This is because EH can be an alternative for batteries in low power electronic devices. Vibration energy harvesting is an attractive technique for potential powering of low-energy electronics and wireless sensors
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
