Experimental analysis of a solid-state Marx topology utilizing a boost regulator circuit to generate millisecond pulses with low droop

Continuing investigations indicate that a solid-state Marx modulator utilizing a novel boost circuit topology can generate a 4 ms long megawatt pulse at 10 Hz with a voltage droop of less than 1%. The boost regulator operates by charging the discharge capacitor with energy stored in a boost inductor. Both the discharge and boost capacitors are charged to the same pre-pulse voltage, so a single power supply voltage is required for operation. A feedback circuit controls the operation of the boost IGBTs, increasing the efficiency of the circuit by limiting the current through the boost inductor. Additional controls prevent overcharging of the discharge capacitor in the case of dynamic load impedance. Preliminary experimental data are analyzed and future system goals are stated.