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An Electromagnetic Frequency Increased Vibration Energy Harvester

This paper presents an impact-based frequency increased electromagnetic vibration energy harvester to scavenge energy in a low frequency environment. To realize the novel impact based frequency up-conversion mechanism, a coil has been elastically anchored with a platform on which four permanent magn...

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Main Authors: Ashraf, Khalid, Md Khir, Mohd Haris, Dennis, John Ojur
Format: Article
Published: Trans Tech Publications, Switzerland 2011
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utp.edu.my/7168/1/JOURNAL_PAPER_2_%28K%29.pdf
http://www.scientific.net/AMR.403-408.4231
http://eprints.utp.edu.my/7168/
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spelling my.utp.eprints.71682017-01-19T08:22:14Z An Electromagnetic Frequency Increased Vibration Energy Harvester Ashraf, Khalid Md Khir, Mohd Haris Dennis, John Ojur TK Electrical engineering. Electronics Nuclear engineering This paper presents an impact-based frequency increased electromagnetic vibration energy harvester to scavenge energy in a low frequency environment. To realize the novel impact based frequency up-conversion mechanism, a coil has been elastically anchored with a platform on which four permanent magnets are arranged in such a way that a strong closed magnetic flux path, linking the coil, is formed. The proposed scavenger has two dynamics of motion. The first phase is a low frequency oscillation to absorb energy from ambient vibration during which both the coil and magnet act as proof mass and move collectively. The increased proof mass ensures maximization of absorbed energy. After crossing a certain clearance, the platform containing magnetic setup rigidly and supporting the coil elastically, collides with a rigid stopper and bounces back. As a result of this mechanical impact a high frequency oscillation is setup in the coil relative to the magnets during which energy is transferred to electrical domain by electromagnetic induction. A macro-prototype has been build to prove the proposed concept. Initial test results show that the proposed harvester generates a peak voltage of 1 volt across a load of 220 Ω at an excitation frequency of 5 Hz which corresponds to a peak power of 4.5 mW and average power of 660 µW. Trans Tech Publications, Switzerland 2011-11-29 Article PeerReviewed application/pdf http://eprints.utp.edu.my/7168/1/JOURNAL_PAPER_2_%28K%29.pdf http://www.scientific.net/AMR.403-408.4231 Ashraf, Khalid and Md Khir, Mohd Haris and Dennis, John Ojur (2011) An Electromagnetic Frequency Increased Vibration Energy Harvester. Advanced Materials Research, 403-40 . pp. 4231-4234. http://eprints.utp.edu.my/7168/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Ashraf, Khalid
Md Khir, Mohd Haris
Dennis, John Ojur
An Electromagnetic Frequency Increased Vibration Energy Harvester
description This paper presents an impact-based frequency increased electromagnetic vibration energy harvester to scavenge energy in a low frequency environment. To realize the novel impact based frequency up-conversion mechanism, a coil has been elastically anchored with a platform on which four permanent magnets are arranged in such a way that a strong closed magnetic flux path, linking the coil, is formed. The proposed scavenger has two dynamics of motion. The first phase is a low frequency oscillation to absorb energy from ambient vibration during which both the coil and magnet act as proof mass and move collectively. The increased proof mass ensures maximization of absorbed energy. After crossing a certain clearance, the platform containing magnetic setup rigidly and supporting the coil elastically, collides with a rigid stopper and bounces back. As a result of this mechanical impact a high frequency oscillation is setup in the coil relative to the magnets during which energy is transferred to electrical domain by electromagnetic induction. A macro-prototype has been build to prove the proposed concept. Initial test results show that the proposed harvester generates a peak voltage of 1 volt across a load of 220 Ω at an excitation frequency of 5 Hz which corresponds to a peak power of 4.5 mW and average power of 660 µW.
format Article
author Ashraf, Khalid
Md Khir, Mohd Haris
Dennis, John Ojur
author_facet Ashraf, Khalid
Md Khir, Mohd Haris
Dennis, John Ojur
author_sort Ashraf, Khalid
title An Electromagnetic Frequency Increased Vibration Energy Harvester
title_short An Electromagnetic Frequency Increased Vibration Energy Harvester
title_full An Electromagnetic Frequency Increased Vibration Energy Harvester
title_fullStr An Electromagnetic Frequency Increased Vibration Energy Harvester
title_full_unstemmed An Electromagnetic Frequency Increased Vibration Energy Harvester
title_sort electromagnetic frequency increased vibration energy harvester
publisher Trans Tech Publications, Switzerland
publishDate 2011
url http://eprints.utp.edu.my/7168/1/JOURNAL_PAPER_2_%28K%29.pdf
http://www.scientific.net/AMR.403-408.4231
http://eprints.utp.edu.my/7168/
_version_ 1738655551489835008
score 13.211869

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