期刊论文

Du, D.

中文

核技术

0253-3219

2022

45

4

74-80

10.11889/j.0253-3219.2022.hjs.45.040603

国家自然科学基金(No.1 1205086 、No.120751 14 )、湖南省自然科学基金(No.2020JJ4515)、湖南省教育厅重点项目(No.20A432、No.20A439、 No.20A417)、国家留学基金项目(No.202108430056)、南华大学核燃料循环技术与装备湖南省协同创新中心开放基金项目(No.2019KFY23、 No.2019KFZ10) 第一作者：杨开建，男，1996年出生，现为硕士研究生，研究领域为核聚变与等离子体物理 通信作者：杜丹，E-mail：9367645@qq.com 收稿日期：2021-12-07，修回日期：2022-02-09 Supported by National Natural Science Foundation of China (No.1 1205086 , No.120751 14 ), the Natural Science Foundation of Hunan Province, China (No.2020JJ4515), the Research Foundation of Education Bureau of Hunan Province, China (No.20A432, No.20A439, No.20A417), National Study Abroad Program, China (No.202108430056), Open Fund Project of Hunan Collaborative Innovation Center of Nuclear Fuel Cycle T echnology and Equipment, University of South China (No.2019KFY23, No.2019KFZ10) Firstauthor:Y ANG Kaijian,male,bornin1996,masterstudent,focusingonnuclearfusionandplasmaphysics Corresponding author: DU Dan, E-mail: 9367645@qq.com Received date: 2021-12-07, revised date: 2022-02-09

本校为第一机构

采用传输线理论分析了离子回旋共振加热(Ion Cyclotron Resonance Heating,ICRH)天线耦合阻抗变化时(2~8 Ω),频率反馈控制对ICRH天线系统单铁氧体调谐器阻抗匹配效果的影响。模拟结果表明:在一定条件下,优化设计铁氧体长度及天线与单铁氧体调谐器之间的机械长度(归一化长度约0.540),结合频率反馈控制,单铁氧体调谐器可将ICRH天线系统的反射系数降低在0~8.4%以内,频率反馈相对频移范围为0.146%~ 0.134%,系统阻抗匹配响应时间(小于1 ms)满足天线耦合阻抗的快速变化。频率反馈控制的单铁氧体调谐器,不仅有效地缩小了匹配网络的空间尺寸,而且还能增强阻抗匹配效果。相关研究结果为离子回旋共振加热...

Background: Ion cyclotron resonance heating (ICRH) is an important auxiliary heating method in tokamak. When fast plasma phenomena such as L-H mode transitions and edge localized modes (ELM), etc., happens, a large change in the antenna coupling impedance occurs. This causes the reflected radio frequency (RF) power of ICRH antenna system increases drastically, which is an urgent problem to be solved in ICRH experiment. Purpose: This study aims to reduce the reflected power of ICRH antenna system by an optimal design of the antenna impedance mat...