Abstract
This paper proposes a new control method of plasma position and shape for tokamak reactors employing a hybrid poloidal field coil system. The control method adopts a decoupling matrix and a hybrid control matrix. The decoupling matrix suppresses interactions among the control loops of plasma horizontal position, vertical position and shape to improve the responses of the control loops. The hybrid control matrix sets the coil current references of the hybrid poloidal field coil system, and keeps the equilibrium field of plasma in order to realize the control loops. The proposed control method was evaluated by digital simulations using a mathematical plasma model based on the equilibrium equations of plasm, and is now available to realize stable control loops of plasma position and shape for tokamak reactors.
