Multi-waveform switching module for lightning stroke surge current testing system

Abstract

The invention discloses a multi-waveform switching module for a lightning stroke surge current testing system. A discharge loop of the multi-waveform switching module comprises a first capacitor unit, a first switching group, a second capacitor unit, a second switching group and a wave regulation resistor unit; first capacitors in the first capacitor unit are sequentially connected in series with second capacitors in the second capacitor unit and are positioned between both ends of the discharge loop; both the first capacitor and the second capacitors consist of upper capacitors and lower capacitors, which re correspondingly connected in series; contact points between the upper capacitors and the corresponding lower capacitors of the first capacitors in the first capacitor unit are connected in series by a first wire; contact points between the upper capacitors and the corresponding lower capacitors of the second capacitors in the second capacitor unit are connected in series by a second wire; and contact points between the lower capacitors in the first capacitor unit and the upper capacitors in the second capacitor unit are connected in series by a third wire. According to the multi-waveform switching module which is disclosed by the invention, various waveforms can be generated; the utilization rate of devices is improved; part assemblies are reduced; and the hazard caused by part of residual voltages of the capacitors is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of converting power input into surge power output, in particular to a multi-waveform switching module used in a lightning surge current test system. Background technique [0002] The simulated lightning strike surge current test system, also known as the impulse current generator, forms a large current through the instantaneous discharge of the energy storage capacitor, and conducts simulated lightning strike tests on lightning protection devices and devices such as SPDs, varistors, and lightning protection boxes, so that Verify whether these devices can absorb and suppress the large current and overvoltage caused by lightning, and can also be used to test and verify the anti-interference ability of power systems and electronic products in the environment of lightning strikes; the device can also be used Applied to other scientific research analysis, such as electromagnetic pulse protection and other fields....

AI Technical Summary

Problems solved by technology

The existing technology is to use different instruments to generate a single waveform. The investment in the test equipment is large, it is inconvenient to use, and the degree of control automation is not high. However, a variety of waveform generators need to control many devices, which involves the interlocking of various waveform modules. Problem, adopting the traditional relay control mode will greatly increase the difficulty of control

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