Preliminary design of high power magnet converter for CRAFT

Zhongma WANG (王重马); Peng FU(傅鹏); Liansheng HUANG (黄连生); Zhiquan SONG (宋执权); Xiuqing ZHANG (张秀青); Tianbai DENG (邓天白); Tao CHEN (陈涛); Ronglin HUANG (黄荣林); Zhenshang WANG (王振尚); Xiaojiao CHEN (陈晓娇); Shiying HE (何诗英); Zejing WANG (王泽京); Guanghong WANG (王广红)

doi:10.1088/2058-6272/ab7472

Plasma Science and Technology > 2020 > 22(4): 45604-045604. > DOI: 10.1088/2058-6272/ab7472

Zhongma WANG (王重马), Peng FU(傅鹏), Liansheng HUANG (黄连生), Zhiquan SONG (宋执权), Xiuqing ZHANG (张秀青), Tianbai DENG (邓天白), Tao CHEN (陈涛), Ronglin HUANG (黄荣林), Zhenshang WANG (王振尚), Xiaojiao CHEN (陈晓娇), Shiying HE (何诗英), Zejing WANG (王泽京), Guanghong WANG (王广红). Preliminary design of high power magnet converter for CRAFT[J]. Plasma Science and Technology, 2020, 22(4): 45604-045604. DOI: 10.1088/2058-6272/ab7472

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Preliminary design of high power magnet converter for CRAFT

¹ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
² University of Science and Technology of China, Hefei 230026, People's Republic of China

Funds: This work was supported by the National Key R&D Program of China (No. 2017YFE0300504) and Comprehensive Research Facility for Fusion Technology (No. 2018-000052- 73-01-001228).

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Received Date: December 03, 2019
Revised Date: January 16, 2020
Accepted Date: February 09, 2020

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Abstract

Abstract

In order to test the superconducting magnet performance for the Comprehensive Research Facility for Fusion Technology (CRAFT) project of China, a power supply converter needs to be designed. In this paper, short circuits upstream and downstream of the direct current (DC) reactor are analyzed, and the thyristor style and the parallel number are determined by the limit analysis of junction temperature and fault current I²t. On this basis, the over current and voltage verification of fast fuse are finished to protect the thyristor at fault cases by considering the short circuit of the bridge arm. Then, the resistor and capacitor parameters of thyristor snubber are committed to decreasing the reverse over voltage. These analysis results will be used as the preliminary design of high power magnet converter for CRAFT.
- CRAFT,
- converter,
- thyristor,
- fast fuse,
- snubber

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References (15)

References

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2.	Li, W., Yang, Y., Jiang, L. et al. Design of High-Precision Thyristor Trigger Unit for CRAFT Magnet Power Converter. IEEE Transactions on Plasma Science, 2024, 52(9): 3656-3661. DOI:10.1109/TPS.2024.3387062
3.	Wang, Z., He, S.-Y., Huang, L.-S. et al. Fault analysis and simulation of the short circuit in high-power fusion magnet power supply \| [高功率聚变磁体电源桥臂直通故障分析及仿真]. Hejubian Yu Dengliziti Wuli/Nuclear Fusion and Plasma Physics, 2023, 43(1): 12-17. DOI:10.16568/j.0254-6086.202301003
4.	Tong, W., Xu, M., Li, H. et al. The Effects of Neutron Irradiation on the Electrical Characteristics of High-power Thyristor. 2023. DOI:10.1109/CIEEC58067.2023.10165858
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8.	Wang, B., Song, W., Si, Y. On a Novel Topology of Matrix Converter Applied to Accelerator DC Power Supply. Complexity, 2022. DOI:10.1155/2022/3681007

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Preliminary design of high power magnet converter for CRAFT