摘要
对EAST托卡马克极向场电源系统的关键设备之一——大功率双向直流快速晶闸管开关的基本工作原理,即强迫换流技术进行深入的理论分析,得出直流晶闸管开关可靠关断理论判据。并在此基础上进行了参数的优化设计。最后对换流支路分布电阻对关断特性的影响进行了分析。所有这些工作为大功率双向直流快速晶闸管开关的研制成功提供了坚实的理论保证。
The high power bi-directional DC thyristor switch is one of key equipments of the poloidal field power supply system in EAST Super-conductive TOKAMAK. Forced commutation technology has been analyzed thoroughly, which is the base of DC thyristor switch. Firstly, the reliable turn-off criterion and optimized expressions of parameters have been derived. Then, the influence of distributing resistance has been emphasized during turn-off. At last, a series of tests result have been provided. All these work make sure development of high power bi-directional DC fast thyristor switch finished successfully.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第14期62-67,共6页
Proceedings of the CSEE
关键词
电力电子
晶闸管
直流开关
强迫换流
可靠关断
优化设计
Power electronics
Thyristor
DC switch
Forced commutation
Reliable turn-off
Optimize design
