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A parametrically excited vibration energy harvester

A parametrically excited vibration energy harvester
A parametrically excited vibration energy harvester
In the arena of vibration energy harvesting, the key technical challenges continue to be low power density and narrow operational frequency bandwidth. While the convention has relied upon the activation of the fundamental mode of resonance through direct excitation, this article explores a new paradigm through the employment of parametric resonance. Unlike the former, oscillatory amplitude growth is not limited due to linear damping. Therefore, the power output can potentially build up to higher levels. Additionally, it is the onset of non-linearity that eventually limits parametric resonance; hence, this approach can also potentially broaden the operating frequency range. Theoretical prediction and numerical modelling have suggested an order higher in oscillatory amplitude growth. An experimental macro-sized electromagnetic prototype (practical volume of ~1800 cm3) when driven into parametric resonance, has demonstrated around 50% increase in half power band and an order of magnitude higher peak power density normalised against input acceleration squared (293 mW cm23 m22 s4 with 171.5 mW at 0.57 m s22) in contrast to the same prototype directly driven at fundamental resonance (36.5 mW cm23 m22 s4 with 27.75 mW at 0.65 m s22). This figure suggests promising potentials while comparing with current state-of-the-art macro-sized counterparts, such as Perpetuum’s PMG-17 (119 mW cm23 m22 s4).
1045-389X
278-289
Jia, Yu
12182124-55e3-47c1-991a-228d6edc85ee
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
Soga, Kenichi
e43028e3-af4d-4ea4-a747-6cc6dacc849b
Seshia, Ashwin A.
6fe2b5b5-e451-41e2-a23a-601c9faf7d8a
Jia, Yu
12182124-55e3-47c1-991a-228d6edc85ee
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
Soga, Kenichi
e43028e3-af4d-4ea4-a747-6cc6dacc849b
Seshia, Ashwin A.
6fe2b5b5-e451-41e2-a23a-601c9faf7d8a

Jia, Yu, Yan, Jize, Soga, Kenichi and Seshia, Ashwin A. (2014) A parametrically excited vibration energy harvester. Journal of Intelligent Materials Systems and Structures, 25 (3), 278-289. (doi:10.1177/1045389X13491637).

Record type: Article

Abstract

In the arena of vibration energy harvesting, the key technical challenges continue to be low power density and narrow operational frequency bandwidth. While the convention has relied upon the activation of the fundamental mode of resonance through direct excitation, this article explores a new paradigm through the employment of parametric resonance. Unlike the former, oscillatory amplitude growth is not limited due to linear damping. Therefore, the power output can potentially build up to higher levels. Additionally, it is the onset of non-linearity that eventually limits parametric resonance; hence, this approach can also potentially broaden the operating frequency range. Theoretical prediction and numerical modelling have suggested an order higher in oscillatory amplitude growth. An experimental macro-sized electromagnetic prototype (practical volume of ~1800 cm3) when driven into parametric resonance, has demonstrated around 50% increase in half power band and an order of magnitude higher peak power density normalised against input acceleration squared (293 mW cm23 m22 s4 with 171.5 mW at 0.57 m s22) in contrast to the same prototype directly driven at fundamental resonance (36.5 mW cm23 m22 s4 with 27.75 mW at 0.65 m s22). This figure suggests promising potentials while comparing with current state-of-the-art macro-sized counterparts, such as Perpetuum’s PMG-17 (119 mW cm23 m22 s4).

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More information

e-pub ahead of print date: 18 June 2013
Published date: February 2014
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 393254
URI: http://eprints.soton.ac.uk/id/eprint/393254
ISSN: 1045-389X
PURE UUID: 2e0e6afb-119e-4acd-9d27-eb1ba42c4534
ORCID for Jize Yan: ORCID iD orcid.org/0000-0002-2886-2847

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Date deposited: 25 Apr 2016 10:28
Last modified: 15 Mar 2024 03:53

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Contributors

Author: Yu Jia
Author: Jize Yan ORCID iD
Author: Kenichi Soga
Author: Ashwin A. Seshia

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