Author:
Savarimuthu Kirubaveni,Sankararajan Radha,M. Gulam Nabi Alsath,Roji M. Ani Melfa
Abstract
Purpose
This paper aims to present the design of a cantilever beam with various kinds of geometries for application in energy harvesting devices with a view to enhance the harvested power. The cantilever beams in rectangular, triangular and trapezoidal geometries are simulated, designed and evaluated experimentally. A power conditioning circuit is designed and fabricated for rectification and regulation.
Design/methodology/approach
The analytical model based on Euler–Bernoulli beam theory is analyzed for various cantilever geometries. The aluminum beam with Lead Zirconate Titanate (PZT) 5H strip is used for performing frequency, displacement, strain distribution, stress and potential analysis. A comparative analysis is done based on the estimated performance of the cantilevers with different topologies of 4,500 mm3 volume.
Findings
The analysis shows the trapezoidal cantilever yielding a maximum voltage of 66.13 V at 30 Hz. It exhibits maximum power density of 171.29 W/mm3 at optimal resistive load of 330 kΩ. The generated power of 770.8 µW is used to power up a C-mote wireless sensor network.
Originality/value
This study provides a complete structural analysis and implementation of the cantilever for energy harvesting application, integration of power conditioning circuit with the energy harvester and evaluation of the designed cantilevers under various performance metrics.
Subject
Electrical and Electronic Engineering,Industrial and Manufacturing Engineering
Reference28 articles.
1. Low frequency arc-based MEMS structures for vibration energy harvesting,2013
2. Alternative geometries for increasing power density in vibration energy scavenging for wireless sensor networks,2005
3. Design and performance of variable-shaped piezoelectric energy harvesters;Journal of Intelligent material systems and structures,2014
4. Vibration energy scavenging via piezoelectric bimorphs of optimized shapes;Microsystem Technologies,2010
5. Towards an autonomous self-tuning vibration energy harvesting device for wireless sensor network applications;Smart Materials and Structures,2011
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献