KISSLING S.

In this paper an exhaustive study on the effects of the circulating currents in the modular multilevel converter in HVDC applications is presented. In the first part, an analytical study of the converter is reported, with emphasis on the capacitors voltage ripple in presence of different circulating currents. In particular, the effects of the...

In this paper, a novel approach to determine the model of an ICNL (Independently Controlled Neutral Leg) is proposed. Based on this model, a cascaded control method is developed to provide a steady neutral point connection for a three-phase four-wire inverter and to balance the two DC capacitors voltages of a split DC-bus. Validation of the...

High switching frequency employed in modern power electronic converters is cause of important common mode electrical quantities, having as consequences the premature motor failure and other unwanted effects in drive systems. A new SVM scheme for cascaded multilevel converter, aimed to the attenuation of these consequences, is proposed.