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Vibration energy harvesting using the Halbach array

Vibration energy harvesting using the Halbach array
Vibration energy harvesting using the Halbach array
This paper studies the feasibility of vibration energy harvesting using a Halbach array. A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the array while cancelling the field to almost zero on the other side. This arrangement can improve electromagnetic coupling in a limited space. The Halbach array offers an advantage over conventional layouts of magnets in terms of its concentrated magnetic field and low-profile structure, which helps improve the output power of electromagnetic energy harvesters while minimizing their size. Another benefit of the Halbach array is that due to the existence of an almost-zero magnetic field zone, electronic components can be placed close to the energy harvester without any chance of interference, which can potentially reduce the overall size of a self-powered device. The first reported example of a low-profile, planar electromagnetic vibration energy harvester utilizing a Halbach array was built and tested. Results were compared to ones for energy harvesters with conventional magnet layouts. By comparison, it is concluded that although energy harvesters with a Halbach array can have higher magnetic field density, a higher output power requires careful design in order to achieve the maximum magnetic flux gradient.
075020-[11pp]
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, John
46eea408-2246-4aa0-8b44-86169ed601ff
Harris, Nick
237cfdbd-86e4-4025-869c-c85136f14dfd
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, John
46eea408-2246-4aa0-8b44-86169ed601ff
Harris, Nick
237cfdbd-86e4-4025-869c-c85136f14dfd

Zhu, Dibin, Beeby, Steve, Tudor, John and Harris, Nick (2012) Vibration energy harvesting using the Halbach array. Smart Materials and Structures, 21 (7), 075020-[11pp]. (doi:10.1088/0964-1726/21/7/075020).

Record type: Article

Abstract

This paper studies the feasibility of vibration energy harvesting using a Halbach array. A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the array while cancelling the field to almost zero on the other side. This arrangement can improve electromagnetic coupling in a limited space. The Halbach array offers an advantage over conventional layouts of magnets in terms of its concentrated magnetic field and low-profile structure, which helps improve the output power of electromagnetic energy harvesters while minimizing their size. Another benefit of the Halbach array is that due to the existence of an almost-zero magnetic field zone, electronic components can be placed close to the energy harvester without any chance of interference, which can potentially reduce the overall size of a self-powered device. The first reported example of a low-profile, planar electromagnetic vibration energy harvester utilizing a Halbach array was built and tested. Results were compared to ones for energy harvesters with conventional magnet layouts. By comparison, it is concluded that although energy harvesters with a Halbach array can have higher magnetic field density, a higher output power requires careful design in order to achieve the maximum magnetic flux gradient.

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e-pub ahead of print date: June 2012
Published date: July 2012
Organisations: EEE

Identifiers

Local EPrints ID: 340309
URI: http://eprints.soton.ac.uk/id/eprint/340309
PURE UUID: 55aa1ed1-edf9-4584-9ffa-a21d71c72cb1
ORCID for Dibin Zhu: ORCID iD orcid.org/0000-0003-0517-3974
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759
ORCID for John Tudor: ORCID iD orcid.org/0000-0003-1179-9455
ORCID for Nick Harris: ORCID iD orcid.org/0000-0003-4122-2219

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Date deposited: 18 Jun 2012 09:55
Last modified: 15 Mar 2024 02:46

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Contributors

Author: Dibin Zhu ORCID iD
Author: Steve Beeby ORCID iD
Author: John Tudor ORCID iD
Author: Nick Harris ORCID iD

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