The future is for sustainable energy (SE) sources [1, 2]. However, to utilize SE sources efficiently one needs to integrate them into the AC Power-Grid. To do so, interface electronic circuits are needed to connect SE sources to local loads or directly to the utility grid. These interfaces are known as the SE-Grid inverters. SE-Grid inverters convert direct current (DC) to alternating current (...

First of all, in this paper, the topology and operation of the three-phase three-level Z-source inverter based on neutral-point-clamped (Z-NPC) are studied. Moreover, different combinations of permissible switching states and control signals are explained for this inverter. In this paper, the topology of the three-phase three-level Z-NPC inverter is extended for an n-level state. Also, a combin...

-Simplified active NPC (ANPC) inverters enable a substantially increased output power and an improved performance at zero speed for high-power electrical drives. This paper analyzes the operation of Simplified ANPC inverters under device failure conditions, and proposes the fault-tolerant strategies to enable continuous operating of the inverters and drive systems under single device openand sh...