Design on 10/350µs Crowbar impulse current system

This article combines theoretical calculation and ATP EMTP simulation to design the 10/350μs Crowbar impulse current circuit. Parameters that affect peak value and tail time of the 10/350μs current are obtained. Methods to determine the best main circuit parameters are also concerned. Moreover, the Crowbar pulse ignition circuit which can generate two channels of ignition signals at the same time is introduced here. The two channels of ignition signals have an adjustable time interval between 1 μs to 63 μs and the time error less than 1 μs. According to the above technical design, the 10/350 μs Crowbar impulse current system is produced, with the main capacitance being 24 μF and forming inductance being 16 μH. This system can generate the standard 10/350 μs lightning current waveform with a maximum current value of 100 kA.