Development of a High-Voltage, High-Current Pulse Power Supply Based on Thyristor Surge Suppressor

High-voltage and high-current pulse power supplies have significant application value in food sterilization, biomedicine, and other fields. However, the existing technology is limited by the current-carrying capacity of power semiconductor switch devices, making it difficult to stably output kiloampere-level pulse currents under high-voltage conditions, thus failing to meet the application requirements of some low-impedance loads. Therefore, this paper proposes a multi-branch parallel topology based on a series array of Thyristor Surge Suppressors, achieving precise synchronous driving of multiple branches through photoconductive switches, and combining a magnetic compression module to optimize the pulse waveform collaboratively. Based on the above design, a 5-branch parallel pulse generator experimental circuit was built. Experimental results show that under a 10 Ω load, it can output a high-voltage and high-current pulse with a voltage of 24 kV and a peak current of 1240 A, with a rise time of 532 ns and can operate stably at a repetition frequency of 10 Hz. This design successfully realizes the output of high-voltage and high-current pulses above kiloamperes in the nanosecond range, providing a new technical approach for the development of high-voltage and high-current pulse power supplies.