Adjusting the switch trigger timing of each stage can realize the output waveform control of the Linear Transformer driver (LTD). Establishment of a full-circuit model which reflects the switch triggered close time of each stage and secondary electromagnetic wave transmission process

as well as the automatic optimization of switch trigger timing for specific output waveform by combining with the search optimization algorithm

is the basis of LTD application experiments. In this paper

the trigger timing optimization method of single-module LTD based on the Bergeron algorithm and particle swarm optimization gravitation search algorithm is established. Under the conditions of given pulsed source circuit parameters and output waveform requirements

the trigger timing coefficients are optimized. The calculated results are in agreement with the cascade-triggering experiment of the 12-stage LTD pulsed source

which verifies the effectiveness of the proposed method

and the number of iterations per calculation is less than 10. The results show that

when the 12-stage LTD pulsed source is charged ±60 kV

the trigger timing coefficient ranges from 0.96 to 1.39

the output current amplitude of the pulsed source is (766±8) kA

and the output current front is adjustable from 96 to 109.6 ns. The optimization method can provide the crucial trigger timing parameters for waveform control of large-scale LTD pulsed power devices.