Impedance interference investigation of the paralleled DC/DC converters system used droop current sharing control

Abstract

The loop gain profile of the DC/DC converter is affected by the loading effect of the other DC/DC converters in the parallel DC/DC converter system. As a result, the control performance of the paralleled DC/DC converters system might be deteriorated due to parallel impedance interference. In order to investigate the effect of the parallel impedance interference, the dynamic model of the parallel DC/DC converter system was build up via a general dynamic circuit scheme. From the analysis results, the impedance interference can be identified clearly. Some simulations and experimental results will provide to validate the aforementioned findings.