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Home | Research | M.Sc. And Ph.D Thesis | Adaptive Control for Operation of Fusion Reactors

Adaptive Control for Operation of Fusion Reactors

Thesis Title: 
Adaptive Control for Operation of Fusion Reactors
Rania Atef Adly Fahmy
Date of Birth: 
Sun, 09/09/1979
Previous Degrees: 
B.Sc. (ELC) 2002 - Cairo
Registration Date: 
Fri, 01/10/2004
Awarding Date: 
Tue, 15/09/2009
External Supervisors: 

Dr. Abdel-Rahman, F. M.


Dr. Wahdan, A. A.
Dr. Soltan, M. A.
Dr. Aboul-Saood, A. A.
Dr. Badr, R. I.
Dr. Abdel-Rahman, F. M.

Key Words: 

Burn control, Fusion reactors, Nonlinear adaptive control


The most fundamental problem in fusion reactors is the Control of plasma
density and temperature. In this work, a zero-dimensional nonlinear model
involving approximate conservation equations for the energy and the densities of
the species is used to synthesize a nonlinear feedback controller for stabilizing the
burn condition of a fusion reactor. For this purpose, an adaptive controller is
developed using backstepping technique with three control actions which are
Deuterium-Tritium (D–T) refueling rate, injection rate of impurities and
auxiliary heating power; considering the confinement times for different species
as unknown parameters. The designed controller ensures nominal point
regulation for the energy and plasma parameter. In addition, it is capable of
rejecting perturbations in initial conditions with robustness against uncertainties
in the confinement times for different species.