单信号驱动的固态脉冲源

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。

Solid-state Pulsed Generator Driven by Single Signal

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 chargedJP3] 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 JP]new circuit topology works at 800 V, the system output amplitude is about 8 kV, and the pulse width is about 200~800 ns pulsed voltage, which is of great significance for biomedical applications, tumor ablation and sewage treatment.