4. SIサイリスタを用いた高速高電圧パルス電源(<小特集>半導体パルスパワー電源の現状と今後〜プラズマ研究をささえる半導体パワーデバイス〜)

概要

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Research on and development of a fast high-voltage pulse generator utilizing a SI-thyristor is reviewed. Although the SI-thyristor is a device developed for large current control in the power electronics field, it has desirable properties for pulsed power applications. According to the experimental results on the SI-thyristor, the turn-on characteristics can be drastically improved by driving with a fast and large gate current. The self-turn-off capability of the SI-thyristor was also applied to the inductive energy storage circuit. This paper introduces a newly developed turn-off scheme with the SI-thyristor assisted by MOSFETs to make the circuit configuration extremely robust and simple. A high-voltage pulse with the amplitude of 18.7 kV and the pulse width of 74 ns was successfully obtained at the primary voltage of 100 V.
社団法人プラズマ・核融合学会の論文
2005-05-25