Design of a Tuned Balancing Network for Flying Capacitor Multilevel Converters

The used of a dynamic model of the flying capacitor multilevel converter employed in the design of a tuned balancing network, is presented in this paper. This model presents a time domain approach instead of a frequency domain analysis previously used to characterized the self balancing properties of the capacitor voltage. Through this approach it is possible to obtain a better understanding of the physical properties which governs the self balancing characteristics of the converter. Then it is easier to establish design criteria for the balancing network components needed for proper operation of the multilevel converter