A control system and method for the current of tokemak ohmic heating coil

Abstract

The present invention belongs to the technical fields of power supply control systems of a Tokamak ohmic heating coil current, and especially relates to a system and a method for control of a Tokamakohmic heating coil current. A circuit structure with two anti-parallel three-phase converters (F1, F2) is employed to power supply to an ohmic heating coil, a controllable switch K1 is employed to control the power supply K2 of a forward loop to control the power supply of a reverse loop and increase ring current monitoring to achieve ring current control; real-time LINUX is taken as real-time collection control and feedback control system of the operation system to reflect the data communication system formed by the memory in a high speed, and the GPS is employed with time synchronization tocomplete and uniformly achieve accurate control of the two three-phase converters F1 and F2 in the system; and moreover, the magnetizing, the inversion and the controllable ring current operation of the ohmic heating coil reduce the current fluctuation caused by the reverse current so as to improve the quality and the effect of the Tokamak plasma control.

Description

technical field [0001] The invention belongs to the technical field of a power supply control system of a tokamak ohmic heating coil, and in particular relates to a current control system and method of a tokamak ohmic heating coil. Background technique [0002] The tokamak device confines and controls the current and configuration of the plasma by changing the current to generate a stable magnetic field. Ohmic heating coils play a decisive role in plasma breakdown, ramp-up and maintaining plasma current during plasma discharge. The plasma current will be unstable due to the current fluctuation of the ohmic heating coil, and the stable power supply and zero crossing of the ohmic heating coil are very important for realizing stable plasma current control. Therefore, it is necessary to design a good control system and control method to obtain a good control effect. [0003] Due to the complex operating mode of the ohmic heating coil of the tokmak device and the difficulty of ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a control system and method for the current of the tokemak ohmic heating coil, so as to solve the problems of uncontrollable current zero-crossing time, circulation mode operation and control time delay in the existing control system

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