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Low Effort L-i Nuclear Fusion Plasma Control Using Model Predictive Control Laws

机译：使用模型预测控制律的低努力L-i核聚变等离子体控制

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摘要

One of the main problems of fusion energy is to achieve longer pulse duration by avoiding the premature reaction decay due to plasma instabilities. The control of the plasma inductance arises as an essential tool for the successful operation of tokamak fusion reactors in order to overcome stability issues as well as the new challenges specific to advanced scenarios operation. In this sense, given that advanced tokamaks will suffer from limited power available from noninductive current drive actuators, the transformer primary coil could assist in reducing the power requirements of the noninductive current drive sources needed for current profile control. Therefore, tokamak operation may benefit from advanced control laws beyond the traditionally used PID schemes by reducing instabilities while guaranteeing the tokamak integrity. In this paper, a novel model predictive control (MPC) scheme has been developed and successfully employed to optimize both current and internal inductance of the plasma, which influences the L-H transition timing, the density peaking, and pedestal pressure. Results show that the internal inductance and current profiles can be adequately controlled while maintaining the minimal control action required in tokamak operation.
机译：聚变能的主要问题之一是通过避免由于等离子体不稳定性引起的过早反应衰减来获得更长的脉冲持续时间。等离子体电感的控制成为托卡马克聚变反应堆成功运行的基本工具，以克服稳定性问题以及高级方案运行所面临的新挑战。从这个意义上讲，鉴于高级托卡马克将受到非感应电流驱动执行器的有限功率的影响，变压器初级线圈可以帮助降低电流分布控制所需的非感应电流驱动源的功率需求。因此，托卡马克操作可以通过在保证托卡马克完整性的同时减少不稳定性来从传统控制PID方案中受益于高级控制律。在本文中，已开发出一种新颖的模型预测控制（MPC）方案，并成功地采用它来优化等离子体的电流和内部电感，这会影响L-H过渡时间，密度峰值和基座压力。结果表明，在保持托卡马克运行所需的最小控制作用的同时，可以充分控制内部电感和电流曲线。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第2期|527420.1-527420.8|共8页
  • 作者

    Garrido Izaskun; Romero Jesus A.; Carrascal Edorta; Garrido Aitor J.; Sevillano-Berasategui Goretti; Barambones Oscar;

  • 作者单位

    Univ Basque Country UPV EHU, Dept Automat Control & Syst Engn, Automat Control Grp, Bilbao 48013, Spain.;

    EURATOM CIEMAT, Natl Fus Lab, Madrid 28040, Spain.;

    Univ Basque Country UPV EHU, Dept Thermal Engn, Automat Control Grp, Bilbao 48013, Spain.;

    Univ Basque Country UPV EHU, Dept Automat Control & Syst Engn, Automat Control Grp, Bilbao 48013, Spain.;

    Univ Basque Country UPV EHU, Dept Automat Control & Syst Engn, Automat Control Grp, Bilbao 48013, Spain.;

    Univ Basque Country UPV EHU, Dept Automat Control & Syst Engn, Adv Control Grp, Vitoria 1006, Spain.;

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