Design and characteristics of a modular integrated power supply for the system of flashlamp-pumped in inertial confinement fusion

Abstract

• A 1.46 MJ capacitive pulsed power supply is designed by using the pulse thyristors. • The synchronous triggering of multiple sets of thyristors enables high current output of the pulsed power supply. • The high gate trigger system is developed to control the synchronous conduction of the thyristors of each module. • Simulation and project experience show that the high-probability failure will not affect the other components in the power supply. In order to study the adaptation of the semiconductors for the special power supply application, a capacitive pulsed power supply is designed by using the pulse thyristors. The modular integrated method is adopted to redesign the main circuit of the power supply. The synchronous triggering of multiple sets of thyristors enables high current output of the pulsed power supply, which can avoid excessive current passing through the thyristors and eliminate current-sharing measures of the thyristors. Applying the fast switching MOSFET and magnetic induction of pulse transformer, a set of high gate trigger system is developed to control the synchronous conduction of the thyristors of each module. The simulation and experimental results show that most of the faults occurring during the operation of the pulsed power supply can be limited by protection devices. Practical operation indicates that the pulse power supply can provide specific required pulse current and energy for the pulsed xenon lamp. The design method of the pulsed power supply can provide a reference for the design of the pulsed power supply, and lay a foundation for the higher capacitive energy storage application.