高电压技术2017，Vol.43Issue(6)：1887-1892,6.DOI:10.13336/j.1003-6520.hve.20170527019
兆瓦级中性束注入器全固态抑制极电源及系统连接优化设计
Designs of Power Supply for Megawatt Level Neutral Beam Injection Suppress Grid and System Connection Optimization
摘要
Abstract
The success rate and quality of the neutral beam extraction are determined by the ability of suppressed electron and the reliability of the suppressed grid power supply (SGPS).The full solid SGPS is developed based on IGBT's characteristics of the 5 MW level neutral beam injection (NBI) on HL-2M Tokomak.The power supply consists mainly of 10 modules in series,with index 500 V/20 A.Each of the modules has the isolated transformer,the rectifier,the filter,IGBT switch,drive circuit,diode,and auxiliary DC source.The embedded systems STM32 are used for controlling these modules via fibers,setting output voltage,monitoring the current and protecting the SGPS.The optimized analysis are carried out,including the connection mode of the three-electrode accelerator between SGPS and the accelerator power supply and protection method.Assuming the minimum suppress time is 13 ms in the arcing state,the optimization of the minimum value of the capacitor is 500 μF and the protection resistor in series between SGPS and the suppress grid is 200 Ω.Our experiments demonstrate that the output with amplitude of 5 kV and peak current of 40 A are available in operation alone,and can be turned off within 20 microseconds to protect the SGPS.At the same time,compared the new full solid SGPS with the previous equipment on NBI system,the experimental results show that the extracted beam success rate will increase more than 20％.The whole SGPS meets the requirements of NBI system.关键词
中性束注入器/三电极加速器/抑制极/高压电源/嵌入式系统Key words
neutral beam injection (NBI)/three electrode accelerator/suppress grid/high-voltage power supply/embedded system引用本文复制引用
饶益花,陈文光,胡波,饶军,余珮炫,曹建勇..兆瓦级中性束注入器全固态抑制极电源及系统连接优化设计[J].高电压技术,2017,43(6):1887-1892,6.基金项目
国家国际热核聚变实验堆(ITER)计划项目(2012GB104000) （ITER）
国家自然科学基金面上项目(11675074).Project supported by National ITER Fusion Development (2012GB104000),National Natural Science Foundation of China (11675074). （11675074）
