Imperial College London
Alternate

Dr John McGinley

Faculty of Engineering, Department of Mechanical Engineering

Research Fellow
 
 
 
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Contact

 

j.mcginley

 
 
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Location

 

122City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ristic:2013:10.1109/TIE.2013.2282596,
author = {Ristic, M and Gryska, Y and McGinley, JVM and Yufit, V},
doi = {10.1109/TIE.2013.2282596},
journal = {IEEE Transactions on Industrial Electronics},
title = {Supercapacitor Energy Storage for Magnetic Resonance Imaging Systems},
url = {http://dx.doi.org/10.1109/TIE.2013.2282596},
volume = {PP},
year = {2013}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Magnetic Resonance Imaging (MRI) involves very short pulses of very high current. Substantial savings in the high cost of MRI installations may be realised by employing suitable electrical energy storage, for which supercapacitors are strong candidates in view of high specific power and long cycle life. A key question is whether the well-known capacitance degradation with increased frequency is compatible with the complex and highly variable duty cycles of various MRI sequences. Compatibility of the supercapacitor voltage range with the MRI system must also be considered. We present a detailed analysis of power duty profiles in MRI, using actual imaging sequences, that has not been reported previously. We also propose and validate a simplified supercapacitor model that can accurately simulate its performance in the MRI system, involving pulses several orders of magnitude shorter than those considered previously. Results of equivalent experiments involving Lithium-Ion Iron Phosphate (LiFePO4) batteries are also reported. Finally, we present a detailed analysis of the overall energy storage performance in a realistic neurological examination. The study is based on a specific system of our own design and we fully disclose its relevant parameters, so that the results would be of direct practical value to the wider community, including developers of MRI.
AU  - Ristic,M
AU  - Gryska,Y
AU  - McGinley,JVM
AU  - Yufit,V
DO  - 10.1109/TIE.2013.2282596
PY  - 2013///
SN  - 0278-0046
TI  - Supercapacitor Energy Storage for Magnetic Resonance Imaging Systems
T2  - IEEE Transactions on Industrial Electronics
UR  - http://dx.doi.org/10.1109/TIE.2013.2282596
UR  - http://hdl.handle.net/10044/1/13988
VL  - PP
ER  -
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