全固态高重频高压脉冲电源

设计了一款全固态高重频高压脉冲电源，主电路采用以IGBT为主开关的半桥式固态Marx电路，驱动电路采用磁芯隔离带负压偏置的同步驱动方案，并由FPGA提供充放电控制信号和故障诊断、保护。该方案既可实现对多级电容的低阻抗的快速并联充电控制，又可实现截尾功能以加快脉冲后沿获得方波脉冲，且可实现百μs以上的宽脉冲输出，可用来产生高压脉冲电场。此外，该电源还可在突发模式下输出脉冲个数和频率均可调的多个高频脉冲系列。实验表明，该输出电压幅值可高达40 kV，输出峰值电流可达100 A，重频可达30 kHz，上升沿和下降沿均低于100 ns，突发模式下重频可高达200 kHz。所设计的脉冲电源输出参数连续可调，且体积小巧。

All solid state high-frequency and high voltage pulsed power supply

In this paper, an all-solid-state high-frequency and high-voltage pulse generator is designed. The main circuit uses a half-bridge solid-state Marx circuit with IGBTs as main switches. The drive circuit uses a magnetic-isolated synchronous driver with negative voltage bias. Charge and discharge control signals and fault diagnosis and protection operation are processed by an FPGA. The capacitors in different stages can be charged quickly in parallel through low-impedance loops, and meanwhile the slow tailing pulses are truncated to generate square pulses. Besides, the pulse width over 200 μs are achieved due to the hold-on of the gate-emitter capacitors, which can be used to generate high-voltage pulsed electric field. In addition, this pulse generator can also output various numbers of high-frequency pulses with adjustable pulse numbers in burst mode. Experiments show that pulses with the output voltage amplitude of 40 kV, the peak current of 100 A, the repetitive frequency of 30 kHz, the rise time and the fall time less than 100ns are obtained. The burst mode frequency can be up to 200 kHz. The designed pulse generator is able to output high-voltage pulses with continuously adjustable parameters and the generator's size is very small.