0954406220985199.pdf (1.33 MB)
Download file

Physical realisation of a nonlinear electromagnetic energy harvester for rotational applications

Download (1.33 MB)
journal contribution
posted on 16.12.2020, 14:47 by Ben Gunn, Stephanos TheodossiadesStephanos Theodossiades, Steve RothbergSteve Rothberg
Control and structural health monitoring sensors are becoming increasingly common in industrial and household applications due to recent advances reducing their manufacturing costs, size and power consumption. Nevertheless, providing power for these sensors poses a key challenge to engineers, particularly in system locations where limited access renders regular maintenance infeasible due to high associated costs. In the present work, the design and physical prototype testing of a nonlinear electromagnetic vibration energy harvester is presented based on a previously reported concept of the authors. The harvester is activated by the torsional speed fluctuations of a rotating shaft. Experimental testing in a rig driven by an electric motor confirms the harvester’s properties and the modelled oscillatory behaviour. This novel rotational vibration energy harvester concept may generate over 10 mW of electrical power for a broadband speed range of approximately 400 rpm (in the examined rotational system with set fluctuating speed) for wireless sensing purposes on rotating shafts.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Volume

235

Issue

21

Pages

5275-5287

Publisher

SAGE Publications

Version

VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an Open Access Article. It is published by Sage under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

22/11/2020

Publication date

2021-04-07

Copyright date

2021

ISSN

0954-4062

eISSN

2041-2983

Language

en

Depositor

Prof Stephanos Theodossiades. Deposit date: 15 December 2020