学術雑誌論文 DESIGN AND MANUFACTURING OF THE SIC-BASED POWER SUPPLY SYSTEM FOR RESISTIVE-WALL-MODE CONTROL IN JT-60SA

Ferro, A.  ,  Gasparini, F.  ,  Gaio, E.  ,  Tomasini, M.  ,  Milani, P.  ,  Massarelli, E.  ,  Novello, L.  ,  Matsukawa, M.  ,  Hatakeyama, S.  ,  Shimada, K.

内容記述
In JT-60SA, the control of the instabilities called Resistive Wall Modes (RWMs) is realized also with a dedicated active control system based on 18 in-vessel sector coils. Each coil will be independently fed by a dedicated fast inverter. Due to the outstanding dynamic performance required, the new power modules based on Silicon-Carbide (SiC) have been adopted. Being capable to switch at 30 kHz, these components, together with a very fast control system, allow reaching the required high dynamic performance adopting the simple and compact H-bridge topology. The RWM-PS will be the first power supply system for fast control of plasma instabilities in fusion experiments adopting SiC semiconductors. This paper gives an overview of the final design of this power supply system, with particular emphasis on its special features and the solutions adopted to satisfy the critical requirements. The issues related with the high switching frequency and the peculiar nature of the load will be treated in detail.

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