Design of a Marx Pulse Generator with a Compensation Circuit

This paper presents the design of a Marx based pulse generator incorporation a compensation circuit. The pulse generator employs fully-controlled IGBT solid-state switching devices to achieve precise control over the charging and discharging of energy storage capacitors. This enables the generation of high-voltage long-pulse output while implementing necessary voltage droop compensation during the pulse duration. Through modular and redundant design, the system reduces the Mean Time To Repair and extends the Mean Time Between Failures, thereby improving operational reliability and efficiency while lowering construction costs and system volume. The implemented pulse generator comprises 25 Marx stages. Simulation results demonstrate that with a 4 kV input voltage and the compensation circuit operates at a 3 kV supply voltage, the system outputs an 85 kV high-voltage pulse with a 1 ms duration, effectively limiting the pulse droop to within 1%. This paper elaborates on the design philosophy and key technical solutions of the Marx pulse modulator, providing corresponding simulation verification results.