中性束注入强流离子源放电电源及其时序控制  

Arc Discharge Power Supplies and Control Sequence for High Beam Current of Neutral Beam Injection Ion Source

作　　者：陈文光[1,2] 饶军[2] 李波[2] 雷光玖[2] 王明伟[2] HL-2A NBI组 

机构地区：[1]南华大学电气工程学院,衡阳421001 [2]核工业西南物理研究院,成都610041

出　　处：《高电压技术》2011年第6期1452-1458,共7页High Voltage Engineering

基　　金：国家核能开发科研专项(HL-2APTS-1-01)~~

摘　　要：中性束注入是磁约束核聚变装置中加热等离子体最有效方法之一。为了建设完善中国环流器2号A装置1MW中性束注入器系统,对大功率强流离子源所需的弧放电电源、束线引出电源、辅助电源及控制时序等进行了设计研制。设计中采用了DSP控制技术、电流快速转移技术、IGBT串联调制器技术、高频开关电源技术、磁缓冲器技术以及工业以太网等诸多技术。该系统已经稳定地运行3a时间,开展了高参数注入实验,注入装置的中性束功率接近1MW,瞬时离子束功率超过2MW,脉冲宽度达到1s,在国内首次使等离子体离子温度超过2×107°C。实验结果表明:所研制的电源及控制系统能有效地用于强流离子束的引出和保护,完全满足HL-2A装置辅助加热系统的要求。Neutral beam injection（NBI） is one of the most effective ways to heat plasma in tokomak.In order to construct and promote the mega watt level neutral beam injector on HL-2A tokomak,the power supplies and control sequence technology for the high beam current of ion source power are developed,including arc discharge,beam extraction and auxiliary power supplies,etc.Some important technologies such as digital signal processor control,current fast-shifting,IGBT in series modulator,high-frequency switched-mode power supply,core snubber,industrial Ethernet and so on have been used.The system has been operated stably in high-parameter NBI experiments on HL-2A tokomak for three years.The heating power of NBI to tokomak is close to 1 MW for 1 second and the instantaneous output power is higher than 2 MW.The ion temperature of the plasma center is up to 2×107°C.These results show that the system can be effectively used for high current ion beam extraction and protection,and can fully meet the system requirements of NBI on HL-2A tokomak.

关 键 词：中国环流器2号 中性束注入(NBI) 等离子体 强流离子源 弧放电电源 引出电源 控制时序 

分 类 号：TL623[核科学技术—核技术及应用]