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Electromagnetic vibration energy harvesting using an improved Halbach array

Electromagnetic vibration energy harvesting using an improved Halbach array
Electromagnetic vibration energy harvesting using an improved Halbach array
This paper reports an electromagnetic vibration energy harvester using an improved 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 on the other side to almost zero. Previous research showed that although the Halbach array has higher magnetic field density compared to normal magnet layouts, its magnetic flux gradient is not as high. Thus, output powers of energy harvesters with Halbach arrays were found to be less than those with normal magnet layouts. This paper proposes an improved Halbach array that achieves both high magnetic field strength and magnetic flux gradient. Test results showed that the improved Halbach array can increase the output power of energy harvesters by a factor of seven compared to the previous Halbach design and by a factor of 1.5 compared to the normal configuration.
Electromagnetic energy harvester, halbach array
251-254
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, S.P.
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, M.J.
46eea408-2246-4aa0-8b44-86169ed601ff
Harris, N.R.
237cfdbd-86e4-4025-869c-c85136f14dfd
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, S.P.
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, M.J.
46eea408-2246-4aa0-8b44-86169ed601ff
Harris, N.R.
237cfdbd-86e4-4025-869c-c85136f14dfd

Zhu, Dibin, Beeby, S.P., Tudor, M.J. and Harris, N.R. (2012) Electromagnetic vibration energy harvesting using an improved Halbach array. At PowerMEMS 2012 PowerMEMS 2012, United States. 02 - 05 Dec 2012. 4 pp, pp. 251-254.

Record type: Conference or Workshop Item (Poster)

Abstract

This paper reports an electromagnetic vibration energy harvester using an improved 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 on the other side to almost zero. Previous research showed that although the Halbach array has higher magnetic field density compared to normal magnet layouts, its magnetic flux gradient is not as high. Thus, output powers of energy harvesters with Halbach arrays were found to be less than those with normal magnet layouts. This paper proposes an improved Halbach array that achieves both high magnetic field strength and magnetic flux gradient. Test results showed that the improved Halbach array can increase the output power of energy harvesters by a factor of seven compared to the previous Halbach design and by a factor of 1.5 compared to the normal configuration.

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More information

e-pub ahead of print date: 22 November 2012
Venue - Dates: PowerMEMS 2012, United States, 2012-12-02 - 2012-12-05
Keywords: Electromagnetic energy harvester, halbach array
Organisations: EEE

Identifiers

Local EPrints ID: 345546
URI: https://eprints.soton.ac.uk/id/eprint/345546
PURE UUID: 0f91dde9-0763-4e65-a810-d21190c81628
ORCID for S.P. Beeby: ORCID iD orcid.org/0000-0002-0800-1759
ORCID for N.R. Harris: ORCID iD orcid.org/0000-0003-4122-2219

Catalogue record

Date deposited: 26 Nov 2012 15:00
Last modified: 06 Jun 2018 13:08

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