Combined Current Profile and Plasma Energy Control via Model Predictive Control in EAST
H. Wang, W.P. Wehner and E. Schuster
26th Mediterranean Conference on Control and Automation
Zadar, Croatia on June 19-22, 2018
Abstract
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Extensive studies have shown that the toroidal current density profile,
which is closely related to the poloidal magnetic flux profile, is a
key factor to achieving advanced tokamak operating scenarios characterized
by improved confinement and possible steady-state operation. In this work,
a first-principles-driven, control-oriented model of the poloidal magnetic
flux profile evolution is used to design a feedback controller via model
predictive control (MPC). The aim of the feedback controller is to track
a desired profile for the gradient of the poloidal magnetic flux by
solving an optimal control problem in the presence of disturbances,
non-modeled dynamics, and arbitrary initial conditions. The simulation
results illustrate the capability of the proposed controller in dealing
with perturbed initial conditions and disturbances.