Combined Current Profile and Plasma Energy Control via Model Predictive Control in EAST
26th Mediterranean Conference on Control and Automation
Zadar, Croatia on June 19-22, 2018
Abstract |
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.