Design of Controller for New EAST Fast Control Power Supply

作者：Huang Haihong^*; Yin Ming; Wang Haixin

来源：Plasma Science and Technology, 2014, 16(11): 1068-1073.

DOI：10.1088/1009-0630/16/11/13

• EAST
• plasma
• vertical stability
• active feedback
• fast control power supply
• current close loop

The effectiveness of the magnetic confinement of plasma can be improved by elongating the plasma cross-section in tokamak devices. But elongated plasma has vertical displacement instability, so a feedback control system is needed to restrain the plasma's vertical displacement. A fast control power supply is needed to excite the active feedback coils, which produces a magnetic field to control the plasma's displacement. With the development of EAST, the fast control power supply needs to keep on enhancing the fast response and output current. The structure of a new power supply is introduced in this paper. The method of multiple inverters paralleled with the current sharing reactor is presented to meet the need for large current and fast control. According to the design demands of the EAST fast control power supply, the adjuster of the current close loop is applied to the inverter, which can advance its ability to restrain the loop current in low frequency and DC output. The result of the experiment confirms the validity of the proposed scheme and control strategy.

• 出版日期2014-11
• 单位合肥工业大学