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Título del libro: 16th Latin American Workshop On Plasma Physics, Lawpp 2017 - Conference Proceedings
Título del capítulo: Burn control of an ITER-like fusion reactor using fuzzy logic

Autores UNAM:
JULIO JAVIER MARTINELL BENITO;
Autores externos:

Idioma:
Inglés
Año de publicación:
2017
Palabras clave:

STABILIZATION; MODULATION


Resumen:

The fuel burn in a fusion reactor has to be kept at a nearly constant rate in order to have a steady power exhaust. Here, we develop a control system based on a fuzzy logic controller in order to adjust external parameters to keep the plasma temperature and density at the design values of a reactor of the characteristics of ITER. The control parameters chosen are the D-T refueling rate, the auxiliary heating power and a neutral helium beam. We use a fuzzy controller of the Mamdani type that uses a number of membership functions appropriate to produce a response to parameter deviations that minimizes the response time. The inference rules are determined in a way to provide stabilization to all perturbations of the temperature, density and alpha particle fraction. The dynamical response of the reactor is simulated with a zero-dimentional model that uses confinement times provided by the ITER scaling. We show how the system is feedback stabilized for a large range of parameters around the nominal values. The recovery time after a perturbation from the steady state is within the order of one second even with a noise term added to the energy confinement time. Furthermore the results of this Fuzzy Control System are compared with another control system based on neural networks that was previously developed.


Entidades citadas de la UNAM: