A 2DOF galloping oscillator with internal resonance for broadband concurrent wind and base vibration energy harvesting

Xu, C; Zhao, L

A 2DOF galloping oscillator with internal resonance for broadband concurrent wind and base vibration energy harvesting

Xu, C Zhao, L

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Publisher:: SPIE
Publication Type:: Conference Proceeding
Citation:: Proceedings of SPIE - The International Society for Optical Engineering, 2021, 11588, pp. 41
Issue Date:: 2021-01-01

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Field	Value	Language
dc.contributor.author	Xu, C
dc.contributor.author	Zhao, L https://orcid.org/0000-0002-6229-4871
dc.date	2021-03-22
dc.date.accessioned	2021-11-08T23:55:20Z
dc.date.available	2021-11-08T23:55:20Z
dc.date.issued	2021-01-01
dc.identifier.citation	Proceedings of SPIE - The International Society for Optical Engineering, 2021, 11588, pp. 41
dc.identifier.isbn	9781510640054
dc.identifier.issn	0277-786X
dc.identifier.issn	1996-756X
dc.identifier.uri	http://hdl.handle.net/10453/151413
dc.description.abstract	Studies regarding concurrent wind-flow and base-motion energy harvesting have drawn increasing attention in recent years. However, for conventional wind energy harvesters under such dual excitations, the base-excited inertial vibration and flow-induced aeroelastic vibration supplement with each other only within a narrow range of frequency near the resonance. Within this range, aeroelastic vibration frequency is locked into the base vibration frequency where the two sources are concurrently contributing to power generation; while the concurrent feature is lost outside this range. Internal resonance in multimodal systems has been utilized in recent years for efficiency improvement in pure base vibration energy harvesters. The merit comes from the fact that energy can be pumped from other modes to the power generation bandwidth, broadening the bandwidth toward both lower and higher frequency regions. In this paper, a broadband galloping-based aeroelastic energy harvester with internal resonance is proposed for the purpose of efficiency enhancement in concurrent wind and base vibration energy harvesting. Two-to-one internal resonance is aroused by arranging two sets of magnets symmetrically at the beam connection. Numerical solutions are calculated for the fully coupled aero-electro-mechanical model. A significantly widened lock-in bandwidth with multiple power peaks is achieved for effective concurrent wind and vibration energy harvesting.
dc.language	en
dc.publisher	SPIE
dc.relation.ispartof	Proceedings of SPIE - The International Society for Optical Engineering
dc.relation.ispartof	Active and Passive Smart Structures and Integrated Systems
dc.relation.isbasedon	10.1117/12.2585151
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A 2DOF galloping oscillator with internal resonance for broadband concurrent wind and base vibration energy harvesting
dc.type	Conference Proceeding
utslib.citation.volume	11588
utslib.location.activity	Online
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2021-11-08T23:55:19Z
pubs.finish-date	2021-03-26
pubs.place-of-publication	USA
pubs.publication-status	Published
pubs.start-date	2021-03-22
pubs.volume	11588
dc.location	USA

Abstract:

Studies regarding concurrent wind-flow and base-motion energy harvesting have drawn increasing attention in recent years. However, for conventional wind energy harvesters under such dual excitations, the base-excited inertial vibration and flow-induced aeroelastic vibration supplement with each other only within a narrow range of frequency near the resonance. Within this range, aeroelastic vibration frequency is locked into the base vibration frequency where the two sources are concurrently contributing to power generation; while the concurrent feature is lost outside this range. Internal resonance in multimodal systems has been utilized in recent years for efficiency improvement in pure base vibration energy harvesters. The merit comes from the fact that energy can be pumped from other modes to the power generation bandwidth, broadening the bandwidth toward both lower and higher frequency regions. In this paper, a broadband galloping-based aeroelastic energy harvester with internal resonance is proposed for the purpose of efficiency enhancement in concurrent wind and base vibration energy harvesting. Two-to-one internal resonance is aroused by arranging two sets of magnets symmetrically at the beam connection. Numerical solutions are calculated for the fully coupled aero-electro-mechanical model. A significantly widened lock-in bandwidth with multiple power peaks is achieved for effective concurrent wind and vibration energy harvesting.

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http://hdl.handle.net/10453/151413