Increasing output power of electromagnetic vibration energy harvesters using improved Halbach arrays
Increasing output power of electromagnetic vibration energy harvesters using improved Halbach arrays
This paper extends previously published studies into the performance of Halbach arrays for electromagnetic vibration energy harvesting. 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. Previous research showed that although the Halbach array has higher magnetic field density compared to normal magnet layouts, its magnetic flux change rate is not necessarily high. Thus, output powers of energy harvesters with standard Halbach arrays are not always greater than those with normal magnet layouts. Two improvements to the Halbach arrays that lead to increased output power of electromagnetic vibration energy harvesters are presented in this paper. Test results showed that the proposed improved Halbach arrays can increase the output power of energy harvesters by a factor of seven compared to the standard Halbach array.
11-19
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, SP
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, MJ
46eea408-2246-4aa0-8b44-86169ed601ff
Harris, Nick
237cfdbd-86e4-4025-869c-c85136f14dfd
September 2013
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, SP
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, MJ
46eea408-2246-4aa0-8b44-86169ed601ff
Harris, Nick
237cfdbd-86e4-4025-869c-c85136f14dfd
Zhu, Dibin, Beeby, SP, Tudor, MJ and Harris, Nick
(2013)
Increasing output power of electromagnetic vibration energy harvesters using improved Halbach arrays.
Sensors and Actuators A: Physical, 203, .
(doi:10.1016/j.sna.2013.08.008).
Abstract
This paper extends previously published studies into the performance of Halbach arrays for electromagnetic vibration energy harvesting. 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. Previous research showed that although the Halbach array has higher magnetic field density compared to normal magnet layouts, its magnetic flux change rate is not necessarily high. Thus, output powers of energy harvesters with standard Halbach arrays are not always greater than those with normal magnet layouts. Two improvements to the Halbach arrays that lead to increased output power of electromagnetic vibration energy harvesters are presented in this paper. Test results showed that the proposed improved Halbach arrays can increase the output power of energy harvesters by a factor of seven compared to the standard Halbach array.
Text
Increasing Output Power of Electromagnetic Vibration Energy Harvesters using Improved Halbach Arrays_final.pdf
- Other
More information
Published date: September 2013
Organisations:
EEE
Identifiers
Local EPrints ID: 356767
URI: http://eprints.soton.ac.uk/id/eprint/356767
ISSN: 0924-4247
PURE UUID: 65b46e19-7c01-41d6-bb3f-79d82822a956
Catalogue record
Date deposited: 16 Sep 2013 10:50
Last modified: 15 Mar 2024 02:46
Export record
Altmetrics
Contributors
Author:
Dibin Zhu
Author:
SP Beeby
Author:
MJ Tudor
Author:
Nick Harris
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics