作者机构：
[饶益花] School of mathematics and Physics, University of South China, Hengyang;421001, China;[陈文光] School of Electrical Engineering, University of South China, Hengyang;[饶军; 王明伟] China Southwestern Institute of Physics, Chengdu;610041, China
通讯机构：
[Chen, W.] S;School of Electrical Engineering, University of South China, Hengyang, China
关键词：
电子回旋微波辅助加热系统;高压电源;脉冲步进调制;脉宽调制;大功率微波
摘要：
电子回旋共振加热系统在磁约束核聚变实验研究中有着很重要的作用。回旋管阳极供电需具备幅值快速可调、高稳定度以及波形前沿可变等条件。使用场效应管与快恢复二极管为主要器件研制出开关模块;在电路结构上将59个SM模块与同电压等级的1个BUCK电路依次串联起来。通过分别使用脉冲步进调制与高频脉冲宽度调制控制技术,实现输出幅值连续可调;并且研究了2种调制的控制方法,让输出波形的前沿时间既可在3 ms之内缓慢步进上升,也可以在60μs内快速输出。所有模块由数字信号处理器（DSP）控制的高频逆变电路实现恒压供电。样机实验结果证明:研制的电路与控制方法可行,整个电源输出的电压最大达到36 k V,电流200 m A,且全量程范围内连续可调,稳定度<1%。最大调制频率可以达到1 k Hz,可以在20μs完成各种关断保护,完全满足回旋管装置要求。
作者机构：
[余江妹; 张能; 龚学余; 谢宝艺] School of Mathematics and Physics, University of South China, Hengyang, China;[李景春; 黄千红; 龚学余; 侯伟] School of Nuclear Science and Technology, University of South China, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
作者机构：
[Hu Ji-Wen; Hu Ping; Sun Jia-Na; Lu Yun-Bin] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.;[Hu Ji-Wen; Qian Sheng-You] Hunan Normal Univ, Sch Phys & Informat Sci, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Qian Sheng-You] H;Hunan Normal Univ, Sch Phys & Informat Sci, Changsha 410081, Hunan, Peoples R China.
摘要：
A three dimensional bounce-averaged Fokker-Planck (FP) numerical code has been newly developed based on fully implicit iterative solving method, and relativistic effect is also included in the code. The code has been tested against various benchmark cases: Ohmic conductivity in the presence of weak Ohmic electric field, runaway losses of electrons in the presence of strong Ohmic electric field, lower hybrid current drive and electron cyclotron current drive via two- or three-dimensional simulation. All the test cases run fast and correctly during calculations. As a result, the code provides a set of powerful tools for studying radio frequency wave heating and current drive in tokamak plasmas.
作者机构：
[李伟军] School of Mathematics and Physics, University of South China, Hengyang 421001, China;[向东] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
通讯机构：
[Xiang, D.] S;School of Nuclear Science and Technology, University of South China, China
作者机构：
[余志武; 陈令坤; 蒋丽忠; 龙卫国] School of Civil Engineering and Architecture, Central South Univ, Changsha, Hunan 410075, China;[李黎] The Third Railway Survey and Design Institute Group Corporation, Tianjin 300142, China;[龙卫国] School of Mathematics and Physics, Univ of South China, Hengyang, Hunan 421001, China
通讯机构：
School of Civil Engineering and Architecture, Central South Univ, China
作者机构：
[Ma Man-jun; Tao Ji-cheng; Hu Jia-jia] China Jiliang Univ, Coll Sci, Dept Math, Hangzhou 310018, Peoples R China.;[Zhang Jun-jie] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China.
作者机构：
[尹岚] University of South China Department of Mathematics and Physics, Hengyang 421001, China;[李达] China Southern Power Grid, Guangzhou 510000, China;[沈辉] Sun Yat-sen University Solar Energy Research Institute, Guangzhou 510000, China;[黄岳文] China Electronics Technology Group Corporation, Changsha 410081, China
通讯机构：
[Li, D.] C;China Southern Power Grid, Guangzhou 510000, China
作者机构：
[蒋丽忠; 龙卫国; 陈令坤] School of Civil Engineering and Architecture, Central South University, Changsha 410075, China;[龙卫国] School of Mathematics and Physics, University of South China, Hunan, Hengyang 421001, China
通讯机构：
School of Civil Engineering and Architecture, Central South University, China
