電気学会論文誌B(電力・エネルギー部門誌)
Online ISSN : 1348-8147
Print ISSN : 0385-4213
ISSN-L : 0385-4213
論文
ITER NBI用-1MV短絡時におけるサージ吸収システムの開発
高橋 暁史藤田 裕幸平沼 祐輝市村 智渡邊 和弘柏木 美恵子前島 哲也
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2019 年 139 巻 9 号 p. 576-583

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This paper presents the development results of surge absorber system for an ITER neutral beam injector. Circuit design and insulation design were carried out to withstand 200 times breakdown at beam source. Circuit analysis considering the B-H characteristics of FINEMET core for surge absorption shows the decrease in surge current by 60% due to the developed system. The validity of the established design was demonstrated by the actual-product tests for Transmission Line 2; FINEMET core satisfied the required saturation characteristics of 0.7Vs, and also withstood the impulse voltage of 200kV loaded in the axial direction at the reduced pressure condition of 0.1MPa,abs in the SF6 gas atmosphere.

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