Investigation Of A Compact Pulsed Trigger Generator With Repetitive Rate

Triggered gas gap switch is widely used in pulse power field because of its wide working range, easy operating, good breakdown current capability and other good characteristics. The breakdown performances of gas switches, such as the jitter, breakdown time, are not only determined by the gas type, internal pressure, and electrode geometry but also affected by the characteristics of the trigger generator, such as the rise rate, peak voltage, pulse energy, and so on. A compact, repetitive trigger generator is studied in the thesis.The circuit of pulsed trigger generator is analyzed, and the output voltage and current approximate expressions of the generator are deduced. And the Pspice circuit analysis is employed to model the generator. To study the output voltage waveform effect by the parameter changes, the parameter sweep analysis is simulated for each part of the generator. The calculation and derivation results are helpful in the trigger generator's design.On the base of the investigation of the insulation material and magnetic material, the high-voltage part of trigger generator is designed; Comparing the traditional constant voltage changing with the L-C resonance constant current changing, the charging module is designed; Using the circuit design software Protel, the control part of trigger generator is developed; The electromagnetic field analysis in charging capacitor and pulse transformer is carried out by employing an ANSYS software for, which is based on the finite element method (FEM).Based on the theoretical analysis and component design, a compact, repetitive trigger generator is fabricated and assembled. And the parameters of each part are measured. In the end, the trigger generator is experimentally investigated by triggering a high-voltage gas switch, and the output pulse is measured. The peak voltage reaches 100kV, the rise time is 80ns, and the FWHM is about 200ns.