Solid-state switch-based high-voltage pulse generator

Abstract

The invention discloses a solid-state switch-based high-voltage pulse generator. The generator comprises an input power supply, a fast-closing tube of a circuit, at least one group of solid-stage switch module, a load resistor and a load capacitor, wherein one end of the fast-closing tube of the circuit is connected to a positive electrode of the input power supply, the other end of the fast-closing tube of the circuit is connected to an input end of the at least one group of solid-state switch, an output end of the at least one group of solid-state switch is connected to a negative electrodeof the input power supply, the solid-state switch module comprises an energy storage capacitor, an upper switch and a lower switch, and the upper switch and the lower switch are connected in series and then are connected in parallel with the energy storage capacitor; when only one group of solid-state switch module exists, one end of the load capacitor is connected between the upper switch and thelower switch of the solid-state switch module, and the other end of the load resistor is connected in series with the load capacitor and then is connected to a negative electrode of the input power supply; and when more than one group of solid-state switch modules exist, different solid-state switch modules are connected in parallel, and a protection diode is connected in series between input ends of adjacent solid-state switch modules.

Description

technical field [0001] The invention relates to the technical field of electrical equipment and electrical engineering, in particular to a high-voltage pulse generator based on a solid-state switch. Background technique [0002] High-voltage pulse generators are widely used in insulation performance tests in electric meters, household appliances, low-voltage electrical appliances, electromechanical and other related industries. The pulse waveforms generated by the high-voltage pulse generator mainly include square waves, exponential decay waves, and shock waves. [0003] In the prior art, traditional high-voltage pulse generators mostly rely on spark gap switches (spark gap) to achieve instantaneous conduction. However, this type of switch has poor controllability, which makes it difficult to control the on-off time of this type of pulse generator. At the same time, the pulse amplitude and The length is also difficult to control. With the gradual maturity of high-voltage s...

AI Technical Summary

Problems solved by technology

[0005] The early solid-state marx topology used an isolation transformer to control the IGBT at the high level. However, there are many limitations. The size and design difficulty of the isolation transformer also increase due to the increase in the potential difference.

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