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Proceedings Paper

Vibration energy harvesters with non-linear compliance
Author(s): S. G. Burrow; L. R. Clare; A. Carrella; D. Barton
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Paper Abstract

Vibration powered electrical generators typically feature a mass/spring resonant system to amplify small background vibrations. The compliance element in these resonant systems can become non-linear as a result of manufacturing limitations, physical operating constraints, or by deliberate design. The characteristics of mass/spring resonant systems with non-linear compliance elements are well known but they have not been widely applied within the field of energy harvesting. In this paper analysis of non-linear system behaviour using the harmonic balance method is presented, giving an insight into the potential benefits of non-linearities in energy harvesting applications. The design of a vibration powered energy harvester is reviewed and it is shown how the deliberate incorporation of non-linear behaviour within a design can be beneficial in improving magnetic loading and also in extending the range of frequencies over which the device can generate useful power.

Paper Details

Date Published: 18 April 2008
PDF: 10 pages
Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 692807 (18 April 2008); doi: 10.1117/12.776881
Show Author Affiliations
S. G. Burrow, Univ. of Bristol (United Kingdom)
L. R. Clare, Univ. of Bristol (United Kingdom)
A. Carrella, Univ. of Bristol (United Kingdom)
D. Barton, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 6928:
Active and Passive Smart Structures and Integrated Systems 2008
Mehdi Ahmadian, Editor(s)

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