Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4492
Título: Control of a power supply with cycling current using different controllers
Autor: Roque, António
Maia, José
Margato, Elmano da Fonseca
Sousa, Duarte de Mesquita e
Marques, Gil
Orientador: ROQUE, António; [et al] – Control of a power supply with cycling current using different controllers. In International Symposium on Power Electronics, Electrical Drives, Automation and Motion. New York : IEEE - Institute of Electrical and Electronics Engineers Inc., 2014. ISBN: 978-1-4799-4749-2. P. 560-565.
Palavras-chave: Power supply
Flux density
Current, control
Fast field cycling NMR
Relaxometer
Data: 2014
Editora: IEEE - Institute of Electrical and Electronics Engineers Inc.
Citação: ROQUE, António; MAIA, José; MARGATO, Elmano da Fonseca; SOUSA. Duarte de Mesquita e; MARQUES, Gil - Control of a power supply with cycling current using different controllers. International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). ISBN 978-1-4799-4749-2. (2014), pp. 560-565
Resumo: Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) relaxometers require controlled current sources in order to get accurate flux density with respect to its magnet. The main elements of the proposed solution are a power semiconductor, a DC voltage source and the magnet. The power semiconductor is commanded in order to get a linear control of the flux density. To implement the flux density control, a Hall Effect sensor is used. Furthermore, the dynamic behavior of the current source is analyzed and compared when using a PI controller and a PD2I controller.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4492
DOI: 10.1109/SPEEDAM.2014.6872066
ISBN: 978-1-4799-4749-2
Versão do Editor: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6872066&tag=1
Aparece nas colecções:ISEL - Eng. Electrotécn. - Artigos

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