High Power Laser and Particle Beams, Volume. 33, Issue 9, 096001(2021)

Short-circuit impedance design for converter transformer of superconducting magnet power supply for CRAFT

Ronglin Huang1...2, Peng Fu1,2, Liansheng Huang1,2,*, Liuwei Xu1,2, Ge Gao1,2 and Shiying He1 |Show fewer author(s)
Author Affiliations
  • 1Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
  • 2University of Science and Technology of China, Hefei 230026, China
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    The superconducting magnet power supply for the Comprehensive Research Facility for Fusion Technology (CRAFT) has the abilities of large current steady-state operation, high power pulse operation and transient fault suppression, which is closely related to the short circuit impedance of converter transformer. On the basis of parameters of AC system and equivalent circuit model of converter transformer, the relationship between the performance of superconducting magnet power supply and the short circuit impedance of converter transformer is studied. The research shows that the small short circuit impedance is beneficial to the output voltage and the reactive power loss of superconducting magnet power supply, but the short-circuit fault current and harmonic current increase accordingly. For short-circuit impedance design for converter transformer purposes, firstly, short-circuit impedance must satisfy the transient fault suppression capability and the rated output voltage, and secondly, it is easy to suppress the high characteristic harmonic current brought by thyristor multi-phase converter for CRAFT, hence small short-circuit impedance should be chosen.

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    Ronglin Huang, Peng Fu, Liansheng Huang, Liuwei Xu, Ge Gao, Shiying He. Short-circuit impedance design for converter transformer of superconducting magnet power supply for CRAFT[J]. High Power Laser and Particle Beams, 2021, 33(9): 096001

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    Paper Information

    Category: Nuclear Science and Engineering

    Received: Mar. 17, 2021

    Accepted: --

    Published Online: Oct. 9, 2021

    The Author Email: Huang Liansheng (huangls@ipp.ac.cn)

    DOI:10.11884/HPLPB202133.210088

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