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Orientador(es)
Resumo(s)
The Fast Field-Cycling Nuclear Magnetic Resonance (FFC-NMR) is a technique used to study the molecular dynamics of different types of materials. The main elements of this equipment are a magnet and its power supply. The magnet used as reference in this work is basically a ferromagnetic core with two sets of coils and an air-gap where the materials' sample is placed. The power supply should supply the magnet being the magnet current controlled in order to perform cycles. One of the technical issues of this type of solution is the compensation of the non-linearities associated to the magnetic characteristic of the magnet and to parasitic magnetic fields. To overcome this problem, this paper describes and discusses a solution for the FFC-NMR power supply based on a four quadrant DC/DC converter.
Descrição
Palavras-chave
DC/DC converter Fast field cycling NMR Power supply Reversible current
Contexto Educativo
Citação
LIMA, Duarte; [et al] - Reversible current power supply for fast-field cycling nuclear magnetic resonance equipment. In EPE'2015 ECCE-Europe, 17th European Conference on Power Electronics and Applications. 2015. ISBN 978-9-0758-1522-1. Pp. 1-10
Editora
IEEE - Institute of Electrical and Electronics Engineers Inc.