The challenge and solution of overvoltage for 100 kA Quench Protection System in CRAFT project

doi:10.1016/j.fusengdes.2022.113001

	The challenge and solution of overvoltage for 100 kA Quench Protection System in CRAFT project
	Xu, Meng 1,2; Li, Hua 1; Song, Zhiquan 1; Hu, Xingguang 1,2; Tang, Cunwen 1,2; Fu, Peng 1
刊名	FUSION ENGINEERING AND DESIGN
	2022-02-01
卷号	175
关键词	CRAFT Quench protection system Stray inductance Overvoltage Snubber circuit
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2022.113001
通讯作者	Li, Hua(lihua@ipp.ac.cn)
英文摘要	The high parameters of superconducting magnet in Comprehensive Research Facility for Fusion Technology (CRAFT) project can reach 10 kV/100 kA, which pose great challenge to the design of Quench Protection System (QPS). In particular, the large-scale discharge resistor built for consuming electromagnetic energy stored in superconducting coils, will bring unneglected stray inductance to operating circuit. Therefore, a transient overvoltage may be generated to fail the breaking process and damage the magnet insulation. In this paper, the generation and effects of overvoltage are discussed in detail and verified by simulation. This paper proposes an optimal snubber circuit to constrain overvoltage. By analyzing the commutation process of QPS with snubber circuit, the electrical equations and value selection principles are determined. In addition, the overvoltage constraint effects under different parameters of snubber circuit are compared by simulation. Finally, a set of optimum parameters is proposed to meet the requirements of voltage constraint and cost control.
WOS关键词	DESIGN
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000779064100001
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131458]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Hua
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Xu, Meng,Li, Hua,Song, Zhiquan,et al. The challenge and solution of overvoltage for 100 kA Quench Protection System in CRAFT project[J]. FUSION ENGINEERING AND DESIGN,2022,175.
APA	Xu, Meng,Li, Hua,Song, Zhiquan,Hu, Xingguang,Tang, Cunwen,&Fu, Peng.(2022).The challenge and solution of overvoltage for 100 kA Quench Protection System in CRAFT project.FUSION ENGINEERING AND DESIGN,175.
MLA	Xu, Meng,et al."The challenge and solution of overvoltage for 100 kA Quench Protection System in CRAFT project".FUSION ENGINEERING AND DESIGN 175(2022).