NDLI: Hierarchical plasma shape, position, and current control system for ITER

Content Provider	IEEE Xplore Digital Library
Author	Mitrishkin, Y.V. Kartsev, N.M.
Copyright Year	2011
Description	Author affiliation: Bauman Moscow State Technical University, Russia (Kartsev, N.M.) \|\| V.A. Trapeznikov Institute of Control Sciences of the Russian Academy of Sciences, Moscow, Russia (Mitrishkin, Y.V.)
Abstract	This paper reports the results of the design and modeling of a hierarchical control system for ITER plasma shape, position and current. The system contains three hierarchy levels. The first level is a model correcting loop with a feedback constant matrix. The second level consists of two loops: a fast SISO plasma vertical position stabilization loop and a slow MIMO plasma current and shape control loop. Both loops have the controllers which were designed by an H∞ loop shaping approach in the framework of the disturbance rejection configuration. The third level is a structure with a Model Predictive Controller for improving the plasma shape control process by a vertical position reference adjustment during a plasma discharge. The main idea of our proposal is to solve a tokamak plasma vertical position instability problem in cooperation with the plasma shape and current MIMO control loop. The plasma vertical position stabilization technique provides a more reliable control system in whole when compared with the known system approach when a plasma vertical speed is stabilized at about zero. The simulation results of the plasma magnetic hierarchical control system obtained on plasma-physics nonlinear DINA code for ITER are presented. The system was modeled on DINA code on the divertor phase of the plasma current ramp-up stage and on a DINA linearized model on the flat-top phase when a minor disruption occurs.
Starting Page	2620
Ending Page	2625
File Size	344099
Page Count	6
File Format	PDF
ISBN	9781612848006
ISSN	07431546
e-ISBN	9781612848013
e-ISBN	9781612847993
DOI	10.1109/CDC.2011.6160443
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasmas Shape Current control Vectors Control systems Coils MIMO
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Modeling and Simulation

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