In the NPCMLI topology the use of voltage clamping diodes is essential. A common
DC-bus is divided by a even number, depending on the number of voltage levels in the
inverter, of bulk capacitors in series with a neutral point in the middle of the line, see
the left part of Figure 2.1. From this DC-bus, with neutral point and capacitors, there
are clamping diodes connected to an m