Investigation of miniaturization of allsolid-state high-voltage pulse generators

Le résumé fourni par la source

All-solid-state high-voltage pulsed power supplies offer significant advantages in terms of modularity, high frequency, high efficiency, and long life. But they still need to achieve miniaturization, reduce costs, and increase power levels to replace high-power pulsed powersupplies with gas switches to control the development of high-power accelerator, nuclear fusion and high-power microwave technologies. In this paper, we systematically introduced our serial investigations in miniaturization of all-solid-state highvoltage pulse generators, and the advantages and disadvantages of different synchronous isolation driving schemes are compared. The significant advantages of the magnetically isolated synchronous driving method to achieve the miniaturization of all-solid-state pulse power supply are clarified, because it provides both signals and driving power from the primary side at the same time, eliminating the need for a large number of optical fiber receivers, driver chips, and isolated power converters on the power side. Taking the magnetically isolated synchronous driven multi-stage Marx generator as an example, two different circuits are introduced in detail, which can realize the simultaneous driving of all charging and discharging switches with one control signal, further simplify the structure of all-solid-state square-wave pulse generators, reduce their costs, and realize their miniaturization. The two pulse generators developed can output 10 kV and 2 kHz nanosecond square-wave pulses, and the weights of them are not higher than 674 g. The lighter one which is one of the smallest square-wave pulse generators around the world only weights 575 g and its size of length, width and height are $14.7 \mathrm{~cm}, 7 \mathrm{~cm}$, and 6 cm, respectively. Finally, we present methods to achieve high-power pulses with higher voltages and currents, and show some experimental results to verify them.

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