Preliminary design of high power magnet converter for CRAFT  

作　　者：Zhongma WANG Peng FU Liansheng HUANG Zhiquan SONG Xiuqing ZHANG Tianbai DENG Tao CHEN Ronglin HUANG Zhenshang WANG Xiaojiao CHEN Shiying HE Zejing WANG Guanghong WANG 王重马;傅鹏;黄连生;宋执权;张秀青;邓天白;陈涛;黄荣林;王振尚;陈晓娇;何诗英;王泽京;王广红(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China;University of Science and Technology of China,Hefei 230026,People's Republic of China)

机构地区：[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

出　　处：《Plasma Science and Technology》2020年第4期113-120,共8页等离子体科学和技术（英文版）

基　　金：supported by the National Key R&D Program of China(No.2017YFE0300504);Comprehensive Research Facility for Fusion Technology(No.2018-00005273-01-001228).

摘　　要：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 I^2t.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.

关 键 词：CRAFT CONVERTER THYRISTOR fast FUSE snubber 

分 类 号：TL622[核科学技术—核技术及应用]