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:2018:10.1002/ente.201800151,
author = {Fu, H and Yeatman, E},
doi = {10.1002/ente.201800151},
journal = {Energy Technology},
title = {Comparison and scaling effects of rotational microgenerators using electromagnetic and piezoelectric transduction},
url = {http://dx.doi.org/10.1002/ente.201800151},
volume = {6},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Rotational energy is widely distributed or easily acquirable from other energy sources (fluid flow, machine operation or human motion) in many industrial and domestic scenarios. At small scales, power generation from such rotational ambient sources can enable many autonomous and selfreliant sensing applications. In this paper, three typical types of microgenerators (energy harvesters), namely electromagnetic (EMREHs), piezoelectric resonant (PRREHs) and piezoelectric nonresonant rotational energy harvesters (PNRREHs) are discussed and compared in terms of device dimensions and operation frequencies. Theoretical models are established for each type to calculate maximum achievable output power as a function of device dimension and operating frequency. Using these theoretical models, scaling laws are established for each type to estimate the achievable output. The EMREHs have a strong scaling effect both on device dimension (as L5) and on operating frequency (as ω2), whereas the PNRREHs are less so (L2.5ω0.5). PRREHs have a narrow bandwidth as resonant harvesters, and are ideal for cases where the excitation frequency is constant. This study provides a guideline for selection and design of rotational energy harvesters (REHs) when the device dimension and operating frequency are defined. The proposed scaling laws offer a convenient method to estimate the harvester performance for different dimensions and operating frequencies.
AU  - Fu,H
AU  - Yeatman,E
DO  - 10.1002/ente.201800151
PY  - 2018///
SN  - 2194-4296
TI  - Comparison and scaling effects of rotational microgenerators using electromagnetic and piezoelectric transduction
T2  - Energy Technology
UR  - http://dx.doi.org/10.1002/ente.201800151
UR  - https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.201800151
UR  - http://hdl.handle.net/10044/1/62179
VL  - 6
ER  -
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