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Abstract

A new approach to the modelling and control of tokamak fusion reactors is presented. A nonlinear model is derived using the classical arguments of Hamiltonian mechanics and a low-order linear model is derived from it. The modelling process used here addresses flux and energy conservation issues explicitly and self-consistently. The model is of particular value, because it shows the relationship between the initial modelling assumptions and the resulting predictions. The mechanisms behind the creation of uncontrollable modes in tokamak models are discussed. A normalized coprime factorization controller is developed for the TCV tokamak using the verified linear model. Recent theory is applied to reduce the controller order significantly whilst guaranteeing a priori bounds on the robust stability and performance. The controller is shown to track successfully reference signals that dictate the plasma�s shape, position and current. The tests used to verify this were carried out on linear and nonlinear models.

Additional information

Authors: SHARMA A S, Imperial College of Science, Technology and Medicine, Department of Electrical and Electronic Engineering, London (GB);LIMEBEER D J N, Imperial College of Science, Technology and Medicine, Department of Electrical and Electronic Engineering, London (GB);JAIMOUKHA I M, Imperial College of Science, Technology and Medicine, Department of Electrical and Electronic Engineering, London (GB);LISTER J B, École Polytechnique Fédérale de Lausanne, CRPP, Lausanne (CH)
Bibliographic Reference: An article published as an internal report: LRP 715/01, 13 pp.
ISBN: ISSN 0458-5895
Record Number: 200114121 / Last updated on: 2001-12-14
Category: PUBLICATION
Original language: en
Available languages: en
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