Vibration energy harvesting using the Halbach array

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).


[img] PDF Halbach_array_published.pdf - Version of Record
Restricted to Registered users only

Download (1MB)


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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1088/0964-1726/21/7/075020
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Organisations: EEE
ePrint ID: 340309
Date :
Date Event
June 2012e-pub ahead of print
July 2012Published
Date Deposited: 18 Jun 2012 09:55
Last Modified: 17 Apr 2017 16:56
Further Information:Google Scholar

Actions (login required)

View Item View Item