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Design and modeling of ITER plasma magnetic control system in plasma current ramp-up phase on DINA code

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4 Author(s)
Mitrishkin, Y.V. ; Bauman Moscow State Tech. Univ., Moscow, Russia ; Korostelev, A.Y. ; Dokuka, V.N. ; Khayrutdinov, R.R.

The paper presents cascade tracking system for plasma current and shape in plasma current ramp-up stage. The internal system cascade for tracking currents in magnetic coils was designed by means of full dynamic decoupling. For the external tracking cascade of plasma shape and current design the pseudo-inverse decoupling techniques was used together with original diagonal PII-controller containing parallel connection of proportional, integral, and double-integral units in each channel. The 2nd order model for plasma vertical instability was obtained by identification methodology on plasma-physics DINA code and used in scalar loop design with P-controller for plasma vertical speed suppression. The basic system idea is to transfer from tracking mode of plasma ramp-up phase to quasi-stationary regime without change of controller structure. The system was modeled on nonlinear DINA code with the usage of ITER data of reference scenario 2.

Published in:

Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on

Date of Conference:

15-18 Dec. 2009