脉冲调制高压电源高频化改造的仿真分析与实验  

Simulation analysis and experiment of high frequency transformation of pulse step modulation high voltage power supply

作　　者：周培海 李青[1] 毛晓惠[1] 王雅丽[1] 李春林 ZHOU Pei-hai;LI Qing;MAO Xiao-hui;WANG Ya-li;LI Chun-lin(Southwestern Institute of Physics, Chengdu 610041)

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》2019年第1期28-33,共6页Nuclear Fusion and Plasma Physics

基　　金：国家磁约束核聚变能发展研究专项(2014GB102004)

摘　　要：对HL-2A装置原有的高压电源进行了高频化改造,改造后的单元电源采用脉冲步进阶梯调制(PSM)技术,采用24个不可控整流电源模块与4个调节电源模块串联输出,通过控制各模块的投入切出,使输出电压范围在0～20k V可调,模块开关频率最高可以达到20k Hz。通过仿真和实验测试结果表明,该电源运行参数可以达到20kV/200A,开关频率最高达到了20kHz,能够满足系统的实验需求。In order to improve the physical experimental parameters of the HL-2 A tokamak, the new high-power supply for the auxiliary heating systems need higher stability, faster response, higher power factor,shorter protective time, higher voltage, more flexible control, higher frequency and much less energy discharged to this equipment than the old one when the load is arcing. The high voltage power supply adopts the pulse step modulation(PSM) technology and mainly consists of 28 modules with 4 adjustable modules and 24 uncontrollable switch modules connected in series. The output voltage can be adjusted continuously in 0~20 kV and the switch frequency maximum can reach 20 kHz. The results of simulation and experiment show that the operating parameters of the power supply can reach 20 kV/200 A and meet the experimental requirements.

关 键 词：二级加热 高频高压电源 脉冲步进阶梯调制技术 电源模块 

分 类 号：TL623[核科学技术—核技术及应用]