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Enhancing the performance of piezoelectric energy harvesters using permanent magnets
Other Title(s)
تحسين أداء حاصدات الطاقة الكهرو ضغطية باستخدام مغانط ثابتة
Author
al-Ashtari, Walid Khalid Khayri
Source
Issue
Vol. 21, Issue 7 (31 Jul. 2015), pp.1-16, 16 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2015-07-31
Country of Publication
Iraq
No. of Pages
16
Main Subjects
Topics
Abstract EN
A cantilevered piezoelectric beam with a tip mass at its free end is a common energy harvester configuration.
This paper introduces a new principle of designing such a harvester which increases the generated voltage without changing the natural frequency of the harvester: The attraction force between two permanent magnets is used to add stiffness to the system.
This magnetic stiffening counters the effect of the tip mass on the natural frequency.
Three setups incorporating piezoelectric bimorph cantilevers of the same type in different mechanical configurations are compared theoretically and experimentally to investigate the feasibility of this principle.
Theoretical and experimental results show that magnetically stiffened harvesters have important advantages over conventional setups.
They generate more voltage and they can be tuned across a wide range of excitation frequencies.
American Psychological Association (APA)
al-Ashtari, Walid Khalid Khayri. 2015. Enhancing the performance of piezoelectric energy harvesters using permanent magnets. Journal of Engineering،Vol. 21, no. 7, pp.1-16.
https://search.emarefa.net/detail/BIM-612783
Modern Language Association (MLA)
al-Ashtari, Walid Khalid Khayri. Enhancing the performance of piezoelectric energy harvesters using permanent magnets. Journal of Engineering Vol. 21, no. 7 (Jul. 2015), pp.1-16.
https://search.emarefa.net/detail/BIM-612783
American Medical Association (AMA)
al-Ashtari, Walid Khalid Khayri. Enhancing the performance of piezoelectric energy harvesters using permanent magnets. Journal of Engineering. 2015. Vol. 21, no. 7, pp.1-16.
https://search.emarefa.net/detail/BIM-612783
Data Type
Journal Articles
Language
English
Notes
Includes appendices : p. 11-16
Record ID
BIM-612783