Title :
Control and dynamic behaviour of a FFC NMR power supply
Author :
Roque, Antonio ; Maia, J. ; Margato, E. ; Sousa, Duarte M. ; Marques, Gil
Author_Institution :
Dept. of Electr. Eng., ESTSetubal - Inst. Politec. de Setubal, Setubal, Portugal
Abstract :
The development of the main power supplies of the Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) apparatus has been done using different types of semiconductors, control methods and topologies. All the known power supplies should perform a linear current control. In this paper, the main characteristics and operating principle of a power supply fulfilling the requirements of the FFC NMR technique are described. In particular, a power losses analysis supported by experimental results is performed for typical operating modes.
Keywords :
electric current control; nuclear magnetic resonance; power supplies to apparatus; FFC NMR power supply; control behaviour; dynamic behaviour; fast field cycling nuclear magnetic resonance apparatus; linear current control; main power supplies; operating modes; operating principle; power losses analysis; Magnetic circuits; Magnetic flux; Magnetic semiconductors; Nuclear magnetic resonance; Power supplies; Steady-state; Transient analysis; Fast Field Cycling NMR; current control; power losses; power supply; relaxometer;
Conference_Titel :
Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE
Conference_Location :
Vienna
DOI :
10.1109/IECON.2013.6700110
