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Cristin-resultat-ID:
1529545
Sist endret:
8. mars 2018, 10:12
NVI-rapporteringsår:
2017
Resultat
Vitenskapelig artikkel
2017
Equivalent-circuit models for electret-based vibration energy harvesters
Cuong Phu Le
og
Einar Halvorsen
Tidsskrift
Tidsskrift
Smart materials and structures (Print)
ISSN 0964-1726
e-ISSN 1361-665X
NVI-nivå 1
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Om resultatet
Om resultatet
Vitenskapelig artikkel
Publiseringsår: 2017
Volum: 26
Hefte: 8
Artikkelnummer: 085042
Lenker
Lenker
original online (doi)
https://doi.org/10.1088/1361-665X/aa765a
Beskrivelse
Beskrivelse
Engelsk
Tittel
Equivalent-circuit models for electret-based vibration energy harvesters
Sammendrag
This paper presents a complete analysis to build a tool for modelling electret-based vibration energy harvesters. The calculational approach includes all possible effects of fringing fields that may have significant impact on output power. The transducer configuration consists of two sets of metal strip electrodes on a top substrate that faces electret strips deposited on a bottom movable substrate functioning as a proof mass. Charge distribution on each metal strip is expressed by series expansion using Chebyshev polynomials multiplied by a reciprocal square-root form. The Galerkin method is then applied to extract all charge induction coefficients. The approach is validated by finite element calculations. From the analytic tool, a variety of connection schemes for power extraction in slot-effect and cross-wafer configurations can be lumped to a standard equivalent circuit with inclusion of parasitic capacitance. Fast calculation of the coefficients is also obtained by a proposed closed-form solution based on leading terms of the series expansions. The achieved analytical result is an important step for further optimisation of the transducer geometry and maximising harvester performance.
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Bidragsytere
Bidragsytere
Phu Cuong Le
Bidragsyterens navn vises på dette resultatet som Cuong Phu Le
Forfatter
ved Institutt for mikrosystemer ved Universitetet i Sørøst-Norge
Einar Halvorsen
Forfatter
ved Institutt for mikrosystemer ved Universitetet i Sørøst-Norge
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