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A nonlinear concept of electromagnetic energy harvester for rotational applications

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journal contribution
posted on 22.11.2018, 14:29 by Ben Gunn, Stephanos TheodossiadesStephanos Theodossiades, Steve RothbergSteve Rothberg
Many industrial applications incorporate rotating shafts with fluctuating speeds around a required mean value. This often harmonic component of the shaft speed is generally detrimental, since it can excite components of the system, leading to large oscillations (and potentially durability issues), as well as to excessive noise generation. On the other hand, the addition of sensors on rotating shafts for system monitoring or control poses challenges due to the need to constantly supply power to the sensor and extract data from the system. In order to tackle the requirement of powering sensors for structure health monitoring or control applications, this work proposes a nonlinear vibration energy harvester design intended for use on rotating shafts with harmonic speed fluctuations. The essential nonlinearity of the harvester allows for increased operating bandwidth, potentially across the whole range of the shaft’s operating conditions.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Journal of Vibration and Acoustics

Volume

141

Issue

3

Citation

GUNN, B., THEODOSSIADES, S. and ROTHBERG, S., A nonlinear concept of electromagnetic energy harvester for rotational applications. Journal of Vibration and Acoustics, 141(3), 031005.

Publisher

© American Society of Mechanical Engineers

Version

AM (Accepted Manuscript)

Publisher statement

This is an Open Access Article. It is published by ASME 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/

Publication date

2019-02-04

ISSN

1048-9002

Language

en

Article number

031005

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