EAST纵场电源均流技术  

Current-Sharing Techniques for Toroidal Field Power Supply of EAST

作　　者：江加福[1] 刘小宁[1] 许留伟[1] 廖燕川[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《电工技术学报》2007年第9期118-123,共6页Transactions of China Electrotechnical Society

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.

关 键 词：双反星形 并联 环流 谐波 超导托卡马克 

分 类 号：TM461[电气工程—电器]