Page 268 - Fundamentals of Magnetic Thermonuclear Reactor Design
P. 268
Chapter 8
Plasma Control System
Valerij A. Belyakov, Andrej A. Kavin
JSC D.V. Efremov Scientific Research Institute of Electrophysical Apparatus,
Saint Petersburg, Russia
Chapter Outline
8.1 Introduction 247 8.6.2 Plasma Transport Model
8.2 Scope of the Control System at Start-Up Phase 268
Design Problem 248 8.7 Correction of Error Fields 270
8.3 Basic Design Methodology 249 8.7.1 Effect of Error Fields
8.4 Mathematical Modelling of on Plasma Processes 270
Electromagnetic Processes 251 8.7.2 Field Perturbation
8.4.1 Derivation of Linear Harmonic Analysis 271
Models 251 8.7.3 ITER Correction Coils 273
8.4.2 Non-linear Modelling 258 8.8 Plasma Column Position
8.5 Analytical Synthesis and and Shape Reconstruction
Control System Optimisation 260 Based on Magnetic
8.5.1 Basic Concept 260 Measurements 273
8.5.2 Problem Generalisation 261 8.8.1 Basic Principles 273
8.6 Plasma Start-Up Phase 266 8.8.2 Reconstruction
8.6.1 Dynamics of Tokamak Methods 276
Electromagnetic References 278
Processes 266
8.1 INTRODUCTION
This chapter deals with the optimisation design of the plasma position, shape
and current control system at different phases of discharge. It presents deriva-
tion of the plasma linear models and feedback control algorithms. The methods
of the nonlinear simulation of plasma control system with the free-boundary
codes and features of the simulation of the initial phase of discharge are de-
scribed. The application scope of such models is estimated.
The methods discussed here allow for the evaluation of passive plasma sta-
bilisation effectiveness, give the possibilities for optimising tokamak design
and synthesis of the controllers and specify requirements for the poloidal field
coils’ power supply systems.
Fundamentals of Magnetic Thermonuclear Reactor Design. http://dx.doi.org/10.1016/B978-0-08-102470-6.00008-1
Copyright © 2018 Elsevier Ltd. All rights reserved. 247
