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Robust Sliding Mode Control for Tokamaks

Author

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  • I. Garrido
  • A. J. Garrido
  • M. G. Sevillano
  • J. A. Romero

Abstract

Nuclear fusion has arisen as an alternative energy to avoid carbon dioxide emissions, being the tokamak a promising nuclear fusion reactor that uses a magnetic field to confine plasma in the shape of a torus. However, different kinds of magnetohydrodynamic instabilities may affect tokamak plasma equilibrium, causing severe reduction of particle confinement and leading to plasma disruptions. In this sense, numerous efforts and resources have been devoted to seeking solutions for the different plasma control problems so as to avoid energy confinement time decrements in these devices. In particular, since the growth rate of the vertical instability increases with the internal inductance, lowering the internal inductance is a fundamental issue to address for the elongated plasmas employed within the advanced tokamaks currently under development. In this sense, this paper introduces a lumped parameter numerical model of the tokamak in order to design a novel robust sliding mode controller for the internal inductance using the transformer primary coil as actuator.

Suggested Citation

  • I. Garrido & A. J. Garrido & M. G. Sevillano & J. A. Romero, 2012. "Robust Sliding Mode Control for Tokamaks," Mathematical Problems in Engineering, Hindawi, vol. 2012, pages 1-14, October.
  • Handle: RePEc:hin:jnlmpe:341405
    DOI: 10.1155/2012/341405
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