基于软启与缓冲功能的长脉冲电源模块

Long Pulse Power Module Based on Soft Start and Buffer Function

依托中国环流器二号M(HL-2M)装置等离子体加热和电流驱动需求,提高HL-2M装置物理实验参数,为开展NNBI加热系统设计,需开发新的大功率高压电源系统来加速引出的负离子源。采用国际上常用脉冲阶梯调制(PSM)高压电源技术和快控技术,建造一套200 kV/50 A/100 s高压电源系统。首先研制基于软启动和缓冲电路的大功率长脉冲开关电源单元,其额定输出参数为800 V/50 A/100 s。通过对此开关电源模块进行相关电气指标测试表明,电源模块的输出电压、电流、负载短路快速关断时间、电压上升和下降时间均达到设计要求。

Relying on the plasma heating and current drive requirements of the huanliu-2 M(HL-2 M)device,to imp rove the physical experiment parameters of the HL-2 M device,in order to carry out the design of the NNBI heating sys-tem,it is necessary to develop a new high-voltage power supply system to accelerate the extracted negative ion source.Using pulse step modulation(PSM)high-voltage power supply technology and fast control technology,a set of200 kV/50 A/100 s high-voltage power supply system is built.Firstly,a high-power long-pulse switching power supply unit based on softstart and buffer circuit is developed,and its rated output parameters are 800 V/50 A/100 s.The related electrical index tests on this switching power supply module show that the output voltage,current,load short-circuit fast turn-off time,voltage rise and fall time of the power supply module meet the design requirements.