Imperial College London
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ProfessorEricYeatman

Faculty of Engineering, Department of Electrical and Electronic Engineering

Head of Department of Electrical and Electronic Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6204e.yeatman CV

 
 
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Assistant

 

Ms Anna McCormick +44 (0)20 7594 6189

 
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Location

 

610aElectrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Fu:2019:1361-665X/ab1931,
author = {Fu, H and Zhou, S and Yeatman, E},
doi = {1361-665X/ab1931},
journal = {Smart Materials and Structures},
title = {Exploring coupled electromechanical non-linearities for broadband energy harvesting from low-frequency rotational sources},
url = {http://dx.doi.org/10.1088/1361-665X/ab1931},
volume = {28},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper presents a methodology to effectively harness low-frequency broadband rotational energy using coupled electromechanical non-linearities. This design integrates bi-stability and a synchronized switch harvesting on inductor (SSHI) circuit into a frequency up-converting harvester. The bistable behaviour enables improved output power due to the increased vibration amplitude under the same input plucking force. The SSHI circuit exhibits enhanced conversion capability, contributing higher electrical damping which is ideal for frequency up-converting harvesters to alleviate output fluctuation at high frequencies. To study the coupled non-linear dynamics from both the mechanical (bi-stability) and electrical (SSHI) sides, a system-level theoretical model is, for the first time, established and numerically solved using Matlab/Simulink. System behaviours, which would not be able to obtain using circuit simulation methods, are studied for different operating frequencies and load resistances. To validate the theoretical analysis, this harvester was implemented and tested experimentally. A close match was obtained. From the experimental results, an enhanced output power (up to 525%), over a broad frequency range, was realized, compared to that of a harvester with neither bi-stability nor SSHI circuits.
AU  - Fu,H
AU  - Zhou,S
AU  - Yeatman,E
DO  - 1361-665X/ab1931
PY  - 2019///
SN  - 0964-1726
TI  - Exploring coupled electromechanical non-linearities for broadband energy harvesting from low-frequency rotational sources
T2  - Smart Materials and Structures
UR  - http://dx.doi.org/10.1088/1361-665X/ab1931
UR  - https://iopscience.iop.org/article/10.1088/1361-665X/ab1931/meta
UR  - http://hdl.handle.net/10044/1/70207
VL  - 28
ER  -
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