串联型高压脉冲固态开关设计

The Design of Series High-voltage Pulse Solid-state Switch

为克服传统放电开关在体积、稳定性和成本等方面的局限性,采用了8只金属氧化物半导体场效应晶体管(MOSFET)串联构成高压脉冲固态开关,并由驱动变压器同步隔离控制开关管工作状态;通过Multisim仿真对驱动电路和脉冲产生电路进行仿真,理论上证明驱动电路和脉冲产生电路的可行性;同时制作了硬件电路测试,可得到频率10 Hz～1 kHz可调,脉冲宽度1～2μs可调,峰值7.2 kV,上升时间小于230 ns的高压脉冲。

In order to overcome the limitations of stability,cost and volume of traditional discharge switch,the pulsed solid-state switch which is series-connected by eight metal oxide semiconductor field effect transistor（MOSFET） and controlled by the synchronous isolation transformer.The simulation of the driving circuit and the pulse generating circuit simulated by Multisim provides the theoretical feasibility of the driving circuit and the pulse generating circuit.then the test of pulsed solid-state switch shows high-voltage pulse which frequency can be adjustable from 10 Hz to 1 kHz and pulse width can be adjustable from 1 μs to 2 μs,peak value is 7.2 kV,pulse rise time is less than 230 ns.