单信号驱动的固态脉冲源

Solid-state Pulsed Generator Driven by Single Signal

随着脉冲功率电源在材料表面改性、污水处理以及生物医学等方面的广泛应用,脉冲功率电源正在朝着小型化、驱动简单及稳定的方向发展。目前,由于固态脉冲电源信号需要进行高压隔离,造成系统复杂且体积庞大。为了降低系统的质量和体积,文中提出了一种单信号驱动的固态脉冲源的拓扑结构,通过一个信号控制第一级开关的导通和关断,经主电容对剩余开关的门极电容充电后自行触发余下开关。最后,基于该拓扑结构在通用电路分析(PSPICE)中仿真了10级单信号驱动的固态脉冲源电路,结果表明该新型电路拓扑直流充电源工作在800 V,系统输出幅值约为8 kV,脉宽约为200~800 ns的脉冲电压,对于生物医学应用、肿瘤消融以及污水处理有重大意义。

With the wide application of pulsed power supply in material surface modification,sewage treatment and biomedicine,pulsed power supply is developing towards miniaturization,simple driving and stability.At present,since the solid-state pulse power signal needs to be isolated at high voltage,the system is complicated and bulky.In order to reduce the weight and volume of the system,a topology of a single-signal-driven solid-state pulsed generator is proposed.The turn-on and turn-off of the first-stage switch is controlled by a signal,and the gate capacitance of the remaining switches is charged through the main capacitor,and then the remaining switches are triggered themselves.Finally,based on this topology,a 10-level single-signal-driven solid-state pulsed generator circuit is simulated in PSPICE.The results show that the DC charging source of the new circuit topology works at 800 V,the system output amplitude is about 8 k V,and the pulse width is about 200~800 ns pulsed voltage,which is of great significance for biomedical applications,tumor ablation and sewage treatment.