脉冲阶梯调制高压电源快恢复技术  

Fast recovery technology for pulse step modulated high voltage power supply

作　　者：李春林 毛晓惠 李青 王雅丽 范臻圆 夏于洋 张锦涛 王英翘 蔡一鸣 Li Chunlin;Mao Xiaohui;Li Qing;Wang Yali;Fan Zhenyuan;Xia Yuyang;Zhang Jintao;Wang Yingqiao;Cai Yiming(Southwest Institute of Physics,Chengdu 610225,China)

机构地区：[1]核工业西南物理研究院,成都610225

出　　处：《强激光与粒子束》2025年第3期36-41,共6页High Power Laser and Particle Beams

基　　金：西物创新行动项目(202201XWCX002)。

摘　　要：中性束注入加热是磁约束聚变实验中有效的加热手段,离子源在实验运行过程中出现打火情况就终止离子束的引出,降低了中性束离子源束的引出效率与功率。离子源在发生异常情况时为延长离子源束的引出,开展高压电源快恢复技术研究,即通过再次运行高压电源重新进行束的引出。针对快恢复技术,采用PXIe-8861处理器、PXIe-7820R可编程逻辑门阵列硬件板卡,基于PXIExpress技术研制了一套快恢复控制系统。控制系统采用心跳包机制进行板卡及通讯状态监测,具有客户端及上位机两种参数配置方法,满足在线/离线数据查看与分析功能。通过上位机模式配置,控制系统支持电压、个数控制,满足调制、快恢复、单次等多种工作模式。在兆瓦级强离子源上开展测试结果表明,控制系统操作界面简洁,逻辑结构设计清晰,满足多种控制模式,并通过重启高压电源进行束引出,提高了实验过程离子源束的引出功率。Neutral beam injection heating is an effective heating method in magnetic confinement fusion experiments.If the ion source ignites during experimental operation,the extraction of the ion beam is terminated,reducing the efficiency and power of the neutral beam ion source beam extraction.To prolong the extraction of the ion source beam in case of abnormal situations,research on high-voltage power fast recovery technology was carried out,in which the beam was re-extracted by running the high-voltage power supply again.A fast recovery control system was developed based on PXI Express technology,using the PXIe-8861 processor and PXIe-7820R programmable logic gate array hardware board for fast recovery technology.The control system adopts a heartbeat packet mechanism for board and communication status monitoring,with two parameter configuration methods for client and upper computer,realizing the functions of online/offline data viewing and analysis.Through the configuration of the upper computer mode,the control system supports voltage and quantity control,meeting multiple working modes such as modulation,fast recovery,and single operation.Test results on a megawatt-class strong ion source show that the control system interface is user-friendly,the logical structure is designed clearly,and it has various control modes.Furthermore,the system can restart the high-voltage power supply to improve the extraction power of the ion source beam during the experiment.

关 键 词：中性束 快恢复 可编程逻辑门阵列 控制器 PXIExpress 

分 类 号：TL623[核科学技术—核技术及应用]