摘要
EAST纵场电源由两组双反星形整流电路直接并联而成,要求单组电源的环流和两组电源之间的环流必须满足规定。从纵场电源的数学模型着手,通过谐波分析得到产生环流的原因,对于单组电源的环流,通过改变电路的阻抗特性来抑制,而对于两组电源之间的环流,则通过控制的方法进行动态调节。仿真和实验结果证明,该方案能在保证纵场电源稳定的前提下,取得良好的均流效果。
To achieve above required low output voltage and large operating current of toroidal field power supply （TFPS） for experimental advanced superconducting Tokamak （EAST）,the 12-pulse midpoint converter is preferred,which is formed by two groups of 6-pulse converters by parallel-connected directly,so the circulating current that included every group converter and between the two group converters must be limited at the rating value. In this paper,the maths model of TFPS is established,and the cause of the circulating current is introduc based on the analysis of harmonics wave. According to the difference of the circulating current of every group converter and the two group converters,the suitable current-sharing methods are provided to reduce the relevant circulating current. The current-sharing for TFPS is experimentally confirmed.
出处
《电工技术学报》
EI
CSCD
北大核心
2007年第9期118-123,共6页
Transactions of China Electrotechnical Society
关键词
双反星形
并联
环流
谐波
超导托卡马克
Positive and negative star,parallel-connection,circulating current,harmonics wave,EAST
