LHCD系统微波激励源性能优化设计  

Optimal design of the microwave exciter for LHCD system

作　　者：曾浩[1] 冯鲲[1] 刘丽娟 白兴宇[1] 王超[1] 陈娅莉[1] 梁军[1] 卢波[1] ZENG Hao;FENG Kun;LIU Li-juan;BAI Xin-yu;WANG Chao;CHENG Ya-li;LIANG Jun;LU Bo(Southwestern Institute of Physics,Chengdu 610041;Hebei Signalmicrowave Technology Co.,Ltd,Shijiazhuang 050000)

机构地区：[1]核工业西南物理研究院,成都610041 [2]河北时光射频技术有限公司,石家庄050000

出　　处：《核聚变与等离子体物理》2023年第1期68-74,共7页Nuclear Fusion and Plasma Physics

基　　金：国际热核实验堆(ITER)计划专项(国内配套项目)(2014GB10200)。

摘　　要：使用数字锁相环技术实现一定带宽内高精度可调节的频率输出,解决了速调管长期工作后响应频率发生偏移,模拟锁相环无法工作在系统最佳频率的问题;在移相器后增加功率幅度控制电路,保证了线性放大器的输出功率不会受到相位调节的影响;设计了一种基于数模转换(D/A)技术与微波电调技术相结合的波形控制单元,解决了激励源输出波形不可控的问题。通过以上三方面的改进,完成了HL-2M装置LHCD系统微波激励源的性能优化设计。The problem that the response frequency of the klystron will be shifted after long-term operation and the analog phase-locked loop cannot work at the optimal frequency of the system has been solved by using of digital phase-locked loop technology to achieve high-precision and adjustable frequency output performance within a certain bandwidth.A power amplitude control circuit is added after the shifter to ensure that the output power of the linear amplifier will not be affected by the phase adjustment.A waveform control unit based on the combination of digital-to-analog conversion(D/A)technology and microwave electrically adjustable technology is designed to solve the problem that the output waveform of the exciter is uncontrollable.Through the above three improvements,the performance optimization design of the microwave exciter of the LHCD system on HL-2M tokamak has been completed.

关 键 词：低混杂波电流驱动 微波激励源 数字锁相技术 功率幅度控制 输出波形控制 

分 类 号：TL624[核科学技术—核技术及应用]