HT-7U等离子体位移快控电源设计  

Design of HT-7U plasma displacement fast control power supply

作　　者：张兴[1] 许颇[1] 余勇[2] 刘正之[2] 张崇巍[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]中国科学院等离子体物理研究所,合肥230031

出　　处：《核聚变与等离子体物理》2004年第4期291-296,共6页Nuclear Fusion and Plasma Physics

基　　金：九五重大工程资助项目(国计字1998-210)

摘　　要：针对HT 7U装置等离子体位移快控电源大电流快速响应要求,提出了一种基于电流型变流器的快控电源(FCPS)设计新方案。该方案采用交 直 交拓扑结构,即网侧采用电流型PWP整流器设计,以获得稳定的直流电流及网侧单位功率因数正弦波电流控制;负载侧则采用电流型H桥逆变器设计以实现负载电流的快速跟踪控制。移相PWM控制策略在实现多组变流器并联运行的同时,提高了变流器的等效开关频率控制,从而改善了电流波形品质。模拟系统实验论证了方案的正确性。A novel design scheme based on the current converter is presented to meet the need of larger current control for the plasma displacement fast control power supply (FCPS) in the HT-7U tokmak ,which is composed of ac-dc-ac current source converters. In the side of grid, the topology of paralleled current source PWM rectifiers is adopted to take its input current in an approximately sinusoidal waveform and its power factor to 1. In the side of load-wire, the topology of paralleled current source H-bridge inverters is adopted to obtain fast current tracking response. By using the phase-shift-PWM control which is apt to multi-converters parallel, the equal switch-frequency of the converters is enhanced and the current control performance of FCPS is improved. The simulation experimental results confirm the validity of the proposed scheme.

关 键 词：变流器 单位功率因数 负载电流 用电 电流控制 逆变器 PWM控制 电流型 电源设计 快速跟踪 

分 类 号：O511[理学—低温物理] TN86[理学—物理]