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  4. Multi-channel current control system for coupled multi-coil arrays
 
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Multi-channel current control system for coupled multi-coil arrays

Citation Link: https://doi.org/10.15480/882.4406
Publikationstyp
Journal Article
Date Issued
2022-03-21
Sprache
English
Author(s)
Förger, Fynn  orcid-logo
Scheel, Jan-Philipp  
Thieben, Florian  orcid-logo
Mohn, Fabian  orcid-logo
Knopp, Tobias  
Gräser, Matthias 
Institut
Biomedizinische Bildgebung E-5  
TORE-DOI
10.15480/882.4406
TORE-URI
http://hdl.handle.net/11420/12577
Journal
International journal on magnetic particle imaging  
Volume
8
Issue
1, Suppl 1
Article Number
2203076
Citation
International Journal on Magnetic Particle Imaging 8 (1, Suppl 1): 2203076 (2022)
Publisher DOI
10.18416/ijmpi.2022.2203076
Scopus ID
2-s2.0-85128270399
Publisher
Infinite Science Publishing
For imaging and magnetic manipulation experiments in Magnetic Particle Imaging several field generating coils are required to produce sufficiently high and flexible magnetic fields. To minimize the power consumption, coils with iron cores are the best choice for low and medium frequency ranges. Such coils have comparatively high reactance and are often inductively coupled. The trivial approach to ensure target currents is to provide each coil with a current controlled source resulting in high system complexity and high costs. This paper presents a circuit design to distribute bipolar target currents from a single unipolar source with high accuracy, reducing unwanted coil coupling by a feedback controller. Thus, the number of current sources can be significantly reduced. With a regenerative concept, reactive power is stored and can be reused, allowing efficient and fast current switching.
DDC Class
004: Informatik
610: Medizin
Funding(s)
Modellbasierte Parameteridentifikation in Magnetic Particle Imaging  
Funding Organisations
Bundesministerium für Bildung und Forschung (BMBF)  
More Funding Information
Research funding: The authors thankfully acknowledge the financial support by the German Research Foundation (DFG, grant number KN 1108/7-1 and GR 5287/2-1).
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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