Design and realization of JT-60SA Fast Plasma Position Control Coils power supplies

P. Zito, A. Lampasi, A. Coletti, L. Novello, M. Matsukawa, K. Shimada, D. Cinarelli, M. Portesine, A. Dorronsoro, D. Vian

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Abstract

Fast Plasma Position Control Coils (FPPCC) PSs control the vertical position of the plasma during a plasma shot, to prevent Vertical Displacement Event (VDE), using FPPC coils installed in vacuum vessel for JT-60SA. For this task, the FPPCC PSs have to be very fast for reacting to plasma movements. Further, an open loop feed forward voltage control is adopted in order to achieve a fast control of FPPCC PSs. The main characteristics are: 4-quadrant AC/DC converter 12-pulse with circulating current, DC load voltage ±1000 V and DC load current ±5 kA. The overvoltage induced by FPPC coil during a plasma disruption can reach 10 kV and it is protected by a nonlinear resistor in parallel to the crowbar up to its intervention. All these technical characteristics have strongly influenced the design of the FPPCC converter and transformers which have been validated by simulation model of FPPCC PS. The outcomes of the simulation allowed to finalize the performances and dynamic behavior of voltage response.
Original languageEnglish
Pages (from-to)1191 - 1196
Number of pages6
JournalFusion Engineering and Design
Volume98-99
DOIs
Publication statusPublished - 1 Oct 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Zito, P., Lampasi, A., Coletti, A., Novello, L., Matsukawa, M., Shimada, K., ... Vian, D. (2015). Design and realization of JT-60SA Fast Plasma Position Control Coils power supplies. Fusion Engineering and Design, 98-99, 1191 - 1196. https://doi.org/10.1016/j.fusengdes.2015.05.069