Design of 200 kV solid-state square-wave pulse power supply based on Marx topology

The paper presents a design of high voltage square-wave pulse generator based on 16 graded Marx topology with IGBT solid-state semiconductor switch devices. A composed switch module consisted of 9 serial IGBTs is adopted as the discharge switch of Marx unit. The open and close of all the IGBT switches are triggered by the inducted signal from pulse transformer. The output pulse amplitude is adjustable from several kilovolts to 200 kV. In addition, the width of output pulse is adjustable from 1.5 s to 10 s, varying with the width of the external trigger signal. The rising-edge of pulse is below 500 ns, the falling-edge is below 2.3 s. The flattop decline of the pulse is less than 2% when output voltage is greater than 100 kV and output current is approximately 20 A.