Autonomous Tunable Energy Harvester
Autonomous Tunable Energy Harvester
This paper describes the development and implementation of a self powered control system that autonomously adapts the resonant frequency of an electromagnetic vibration-based energy harvester. The tuning mechanism adjusts the harvester’s spring stiffness by varying the axial tensile force between two permanent magnets. The system can adjust the resonant frequency of the harvester from 64 to 78Hz, increasing the operational bandwidth of the harvester from 0.26 to 14Hz, using a single structure. A closed loop control measures the ambient frequency using the phase difference between the harvester output voltage and an accelerometer to adjust the tuning mechanism. The system has a maximum energy consumption of 202mJ.
49-52
Ayala Garcia, Ivo
72097522-d05b-49c6-b997-faeec3b1bb2e
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Tudor, John
46eea408-2246-4aa0-8b44-86169ed601ff
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Ayala Garcia, Ivo
72097522-d05b-49c6-b997-faeec3b1bb2e
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Tudor, John
46eea408-2246-4aa0-8b44-86169ed601ff
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Ayala Garcia, Ivo, Zhu, Dibin, Tudor, John and Beeby, Steve
(2009)
Autonomous Tunable Energy Harvester.
PowerMEMS 2009, Washington DC, United States.
01 - 04 Dec 2009.
.
(In Press)
Record type:
Conference or Workshop Item
(Other)
Abstract
This paper describes the development and implementation of a self powered control system that autonomously adapts the resonant frequency of an electromagnetic vibration-based energy harvester. The tuning mechanism adjusts the harvester’s spring stiffness by varying the axial tensile force between two permanent magnets. The system can adjust the resonant frequency of the harvester from 64 to 78Hz, increasing the operational bandwidth of the harvester from 0.26 to 14Hz, using a single structure. A closed loop control measures the ambient frequency using the phase difference between the harvester output voltage and an accelerometer to adjust the tuning mechanism. The system has a maximum energy consumption of 202mJ.
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Accepted/In Press date: November 2009
Additional Information:
Event Dates: 1-4 December 2009
Venue - Dates:
PowerMEMS 2009, Washington DC, United States, 2009-12-01 - 2009-12-04
Organisations:
EEE
Identifiers
Local EPrints ID: 271101
URI: http://eprints.soton.ac.uk/id/eprint/271101
PURE UUID: bb8580cc-ad6d-44fa-a0d0-74933680c286
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Date deposited: 17 May 2010 10:37
Last modified: 15 Mar 2024 02:46
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