Multi-waveform impulse current generator

Abstract

The invention discloses a multi-waveform impact current generator comprising a charging unit, an energy storage unit, a gap switch unit, at least one first wave-modulated resistor, a second wave-modulated resistor, an inductor, non-gap adaptive Crowbar switch units, and an object stage under test. The charging unit is connected to the energy storage unit. The series-connected non-gap adaptive Crowbar switch units, the second wave-modulated resistor and the energy storage unit are connected in parallel and are disposed between the inductor on one side and the gap switch unit and the at least one first wave-modulated resistor which are connected in series on the other side. The non-gap adaptive Crowbar switch units each include a high-voltage quick pulse semiconductor assembly and a support frame, and the high-voltage quick pulse semiconductor assembly is composed of a first diode, a second diode and a connecting plate. There is a gap between an inductor-side discharge ball and a high-voltage inductor-side conductive disc, and the inductor-side discharge ball is fixed to one end of a lifting rod. A waveform with a long wave tail can be output with small capacitance. The multi-waveform impact current generator can be applied to class-I lightning waveform, impact current wave with a long wave tail, and A wave and D wave of direct lightning effect waveform. The efficiency of capacitance utilization is improved.

Description

technical field [0001] The invention relates to the technical field of surge protector testing, in particular to a multi-waveform impulse current generator. Background technique [0002] Lightning is a natural discharge phenomenon in nature. After lightning occurs, through the action of electrostatic induction and electromagnetic induction, lightning overvoltage will be formed in the communication line. The multi-waveform impulse current generator is mainly used to simulate the lightning current generator to generate the pulse current waveform with large current and long duration. It is mainly used to simulate the current waveform of Class I lightning (direct lightning) 10 / 350μs, and the direct lightning effect test of the aircraft Generator of waveform A component, D component, and power supply 10 / 1000μs long tail waveform. [0003] At present, there are two main types of multi-waveform impulse current generators on the market, one is the CRL discharge circuit based on tr...

AI Technical Summary

Problems solved by technology

[0006] (1) The control of the generator is more complicated, and it is necessary to control the triggering systems of two sets of generators (multi-waveform impulse current generator and impulse voltage generator) at the same time, so that the impulse voltage generator can delay the impulse current for a certain time, time control It must be accurate, otherwise it is prone to discharge failure and difficult to control;

[0007] (2) For multiple ball distance control, the whole system needs to control the three-ball motion of G2 and the coupling ball gap of G3, as well as the trigger ball gap of the impulse voltage generator body, in addition to this set of triggers, which is difficult to coordinate;

[0008] (3) It is difficult to debug the waveform. The length of the wave tail is controlled by the size of the crowbar energy storage inductor L1, but the load impedance of different tested products is different, which makes it difficult to adjust the duration of the output waveform.

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