420kV High Voltage Pulse Power Supply And Research Of Its Trigger Switch

With the increasing application of pulsed power technology in research and engineering fields, the requirements for high voltage pulsed power supply also developing towards the direction that higher voltage and current, lower delay and jitter is necessary too. It is widely used in industry, medical science, environmental engineering, military and scientific experiment. Based on the research for the principle of the Marx generator and its switch, we analyzed the factor which produced the effect for the output waveform, such as the parameter of the Marx generator and its switch. The analysis laid the foundation of to design a 420 kV high pulse power supply that we have done.In this article, through the analysis of the process of the charge and discharge, we have obtained the constant current charging efficiency formula and the method to obtain higher power from load for the Marx generator. Subsequently, we have done the simulation analysis for the voltage distribution and the electric field distribution of the switch in Maxwell. So I obtained the change of the electric field distribution after the switch have connected, meanwhile, I have known whether its insulating property accord with the requirement. What I have done next is to design a 420 kV high voltage pulse power supply which is based on the theory of the Marx generator. In this process, I have designed the power supply system and the trigger circuit which supporting high voltage power supply work normally. Through the simulation analysis for the Marx circuit in multisim, we obtained the output waveform with different loop inductance and load resistance. We made a set of 420 kV high voltage pulse power supply which based on the simulation data before, then we tested it respectively for 200 ohms water resistance and water resistance of 30 ohms + high voltage disintegration device in load. The experimental results and the previous simulation results are very consistent. Finally, I carried on the summary to the work and analyzed the advantages and disadvantages of the high voltage pulse power supply and the further improvement method.