Author(s):
Lima, Marco ; Pereira, Bruno ; Sousa, Duarte M. ; Roque, António ; Margato, Elmano
Date: 2016
Persistent ID: http://hdl.handle.net/10400.21/9660
Origin: Repositório Científico do Instituto Politécnico de Lisboa
Project/scholarship:
info:eu-repo/grantAgreement/FCT/5876/UID%2FCEC%2F50021%2F2013/PT;
Subject(s): Power supply; Power losses; Fast field cycling NMR; DC/DC converter
Description
The main power supply of a Fast Field-Cycling Nuclear Magnetic Resonance (FFC-NMR) is the key element comparing the performance of different solutions. The power supply is a current source that supplies a magnet being the current controlled in order to perform adjustable and repetitive current cycles. This power supply can be based on different topologies, operating principles and controlled using distinct techniques. If for the final users of this experimental technique the current cycles of the equipment is the core feature, for the developers also the power losses distribution needs to be analyzed in order to develop efficient solutions. In this paper, the power losses and the dynamic behavior of two solutions for the FFC-NMR power supply are compared and discussed.