Current control method of thyristor converter for PF superconducting coil in KSTAR

Choi, Jaehoon; Ahn, Hyun-Sik; Dong-keun, Lee; Jin, J.K.; Jang, Gye-Yong; Seong, Dae-Kyung; Yun, Min-Sung; Shin, Hyun-Seok; Kim, Yaung-soo

doi:10.1016/j.fusengdes.2012.08.003

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Cited by 7 publications

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“…For instance, in Refs. [9][10][11], after the load current decays to the reference current value, the 6-pulse circulating current operation mode is adopted to reduce circulating current paths. A 12-pulse non-circulating current operating mode is applied to decrease the current harmonics.…”

Section: Introductionmentioning

confidence: 99%

New Current Control Method of DC Power Supply for Magnetic Perturbation Coils on J-TEXT

Wubing¹

2014

Plasma Sci. Technol.

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In order to advance the research on suppressing tearing modes and driving plasma rotation, a DC power supply (PS) system has been developed for dynamic resonant magnetic perturbation (DRMP) coils and applied in the J-TEXT experiment. To enrich experimental phenomena in the J-TEXT tokamak, applying the circulating current four-quadrant operation mode in the DRMP DC PS system is proposed. By using the circulating current four-quadrant operation, DRMP coils can be smoothly controlled without the dead-time when the current polarity reverses. Essential circuit analysis, control optimization and simulation of desired scenarios have been performed for normal current. Relevant simulation and test results are also presented.

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Section: Introductionmentioning

confidence: 99%