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Article Dans Une Revue Nuclear Fusion Année : 2013

Lyapunov-Based Distributed Control of the Safety Factor Profile in a Tokamak Plasma

Résumé

A real-time model-based controller is developed for the tracking of the distributed safety-factor profile in a tokamak plasma. Using relevant physical models and simplifying assumptions, theoretical stability and robustness guarantees were obtained using a Lyapunov function. This approach considers the couplings between the poloidal flux diffusion equation, the time-varying temperature profiles and an independent total plasma current control. The actuator chosen for the safety-factor profile tracking is the lower hybrid current drive, although the results presented can be easily extended to any non-inductive current source. The performance and robustness of the proposed control law is evaluated with a physics-oriented simulation code on Tore Supra experimental test cases.
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Dates et versions

hal-00788215 , version 1 (14-02-2013)

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Federico Bribiesca Argomedo, Emmanuel Witrant, Christophe Prieur, Sylvain Brémond, Rémy Nouailletas, et al.. Lyapunov-Based Distributed Control of the Safety Factor Profile in a Tokamak Plasma. Nuclear Fusion, 2013, 53, pp.033005. ⟨10.1088/0029-5515/53/3/033005⟩. ⟨hal-00788215⟩
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