Abstract: This article proposes a six-level hybrid diode-clamped inverter (6L-HDCI) topology with the capability of self-balancing the dc-link capacitor voltages. It consists of two three-level ...

This article proposed a novel sensorless capacitor voltage balancing method for the modular multilevel dc transformer (MMDCT), which is a promising solution for interconnecting dc grids. The MMDCT ...