MHz重复频率固体调制器实验研究
Experimental research on MHz repetition rate solid-state modulator
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摘要: 能产生短脉冲、快上升沿、快下降沿、大电流、能工作在MHz重复频率的固体调制器是脉冲功率技术的一个重要发展方向。介绍了功率MOSFET器件组成的固体调制器的原理以及实验结果，该调制器由多个固体开关模块组成，每个固体开关模块由6个并联的MOSFET开关组成以增大输出电流。固体开关模块采用感应叠加的方式得到高的输出电压。设计的调制器有很快的上升时间与下降时间，其输出脉冲宽度可调并且可以工作在2.5 MHz的重复频率下。在51 Ω的纯电阻负载下，由9个叠加模块组成的调制器可以输出6.2 kV的脉冲电压，脉冲前沿为20 ns。Abstract: Solid-state modulators based on power MOSFETs are promising pulsed power sources in producing high-voltage fast pulses with the pulse width agility in megahertz repetition rate. A solid-state modulator with 9 modules, each with 6 power MOSFETs in parallel, was designed and tested. The 9 modules were stacked in an inductive-adder configuration. The output voltage with amplitude of 6.2 kV, rise time of 20 ns and pulse width of 110 ns was achieved under 720 V charging voltage and 51 Ω resistance load in 2.5 MHz repetition rate.
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Key words:
- solid-state modulator /
- mosfet /
- mhz repetition rate /
- solid state switch /
- inductive adder
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