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Analysis and modelling towards hybrid piezo-electromagnetic vibrating energy harvesting devices
Publikationstyp
Conference Paper
Date Issued
2011-12-02
Sprache
English
Author(s)
Institut
First published in
Number in series
1368
Start Page
81
End Page
84
Citation
International Conference on Applied Mathematics, Modeling and Computational Science (AMMCS-2011) ; Laurier Centennial Conference ; Waterloo, Canada, 25 - 29 July 2011. - (AIP Conference Proceedings 1368): Seite 81-84 (2011)
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
American Institute of Physics
The efficiency of mobile electrical devices increased over the last years. Self-supply by harvesting ambient energy became a possibility of reducing operational costs by ruling out the need of battery replacement. Many energy harvesting devices employ cantilever configurations with base excitation to increase the effective displacement. The proposed design extends this design with an electromagnetic harvesting device (EMH) placed at its tip. It features an alternating stack of magnets with opposing poles and discs of highly permeable material. The composite cylinder is encircled by coils. This EMH design has successfully been employed for ocean wave harvesting and vehicle suspension systems. Its efficiency with respect to mass and energy output is compared to a previously published design using a single magnet placed at the tip moving within a coil. There exists proof that combining readily available technologies into a so-called coupled or hybrid design can increase the efficiency in comparison to respective stand-alone designs. Once the model for the proposed design is derived and evaluated, it is extended by a cantilevered excitation. Piezoelectric layers for hybrid harvesting may be included in future research. © 2011 American Institute of Physics.
Subjects
electromechanical modelling
energy harvesting
hybrid harvesting
linear generator
DDC Class
530: Physik