High Peak-to-Average-Ratio Pulsed Power Suppression Based on Ripple Voltage Compensation

Bulky electrolytic capacitors are equipped on the conventional stand-alone high peak-to-average-ratio (PAPR) pulsed power system. Although there are some active schemes have been proposed to reduce the capacitance, they also have the negative impact on system efficiency. Therefore, in this article, a topology adopted for pulsed power suppression based on ripple voltage compensation and partial power conversion is introduced, in which a direct power path is constructed between the high voltage direct current (HVDC) bus and the energy storage capacitor (ESC) to improve the system efficiency, the output series structure compensates for voltage fluctuations in the ESC, which stimulates the energy storage potential of the capacitors. The structure and operating principle of the topology is introduced, the power flow and distribution are analyzed. Then, the design consideration and control strategy are explained, Finally, a simulation model is built in PSIM and an experimental prototype is built in the lab to verify the accuracy of theoretical analysis and the effectiveness of the topology.