Device for high voltage fast pulse signal real-time turnoff protection

Abstract

A device for real-time shutdown protection of high-voltage fast pulse signals, the pulse signal generator (1) generates a control signal for high-voltage fast pulse generation, controls the pulse power supply (2) to generate high-voltage fast pulses, and acts on the experimental chamber (3) , the discharge current of the experimental cavity (3) is introduced into the current measurement sensor (4), and the voltage signal on the current measurement sensor (4) is connected to a measurement channel of the digital oscilloscope (5), as the trigger source of the oscilloscope, a suitable trigger level. Once the medium breaks down, the discharge current is too large, and the voltage signal on the current measurement sensor (4) is enough to trigger the oscilloscope (5), then the trigger feedback port of the oscilloscope (5) will immediately output a TTL logic signal, which passes through the signal The conversion circuit (6) performs processing, outputs a signal conforming to the shutdown signal interface standard of the pulse signal generator, and turns it off, thereby playing a protective role. The time delay of the present invention can be controlled within 10 μs.

Description

technical field [0001] The invention relates to a device for real-time shutdown protection of high-voltage fast pulse discharge, in particular to a device for high-power high-voltage fast pulse discharge experiment. Background technique [0002] In recent years, with the development and wide application of high-voltage pulse technology, the research on the characteristics of related dielectrics under high-voltage fast pulse discharge has become increasingly in-depth, such as dielectric breakdown, dielectric barrier discharge applications, and electric tree development. Nowadays, there are various devices for generating high-voltage fast pulse signals and devices for discharging. Some universities and research institutions at home and abroad have used these devices to conduct a lot of discharge research, such as Iowa State University in the United States, Texas Tech University Pulse Power Technology Laboratory, Air Force Philips Laboratory, Institute of High Current, Institut...

AI Technical Summary

Problems solved by technology

However, if in the scientific research related to nanosecond narrow pulses, the pulse width of the short-circuit signal is very short, and relevant detection equipment is needed to detect the short-circuit signal, but there is still a lack of practical monitoring methods and circuit devices to realize control and shut down the pulse power supply

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