1. Development of DC‐1 MV Ultrahigh Voltage Generator for ITER.
- Author
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TAKAHASHI, A. K. E. S. H. I., TANAKA, T. O. S. H. I. A. K. I., YAMAGUCHI, K. O. H. E. I., FUJITA, H. I. R. O. Y. U. K. I., HIRANUMA, Y. U. K. I., ICHIMURA, S. A. T. O. S. H. I., WATANABE, K. A. Z. U. H. I. R. O., KASHIWAGI, M. I. E. K. O., and MAEJIMA, T. E. T. S. U. Y. A.
- Subjects
HIGH voltages ,UHF devices ,ELECTRIC generators ,GAS insulation in electric switchgears ,ELECTRIC insulators & insulation - Abstract
SUMMARY: This paper presents development results of a five‐stage DC‐1MV Ultrahigh Voltage Generator for ITER. Each generator outputs −200 kV, and the total five generators are connected in series and outputs −1 MV. In order to realize the DC‐1MV output and 1‐h continuous operation, a feasibility of both gas insulation and gas cooling for semiconductor devices was validated. A simplified structure with stud‐type diodes and heatsinks resulted in the compatibility of enough insulation distance and wide cooling surface. Withstand voltage tests and a temperature rise test were performed for the actual equipment of the rectifier and the step‐up transformer. These test results verified the validity of the proposed design. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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