2.
5-level Inverter
5-level Inverter driving a 3-phase, star connected induction motor is shown in figure 1.
inverter voltage and switch states of 5-level NPC inverter (For phase 'a' only) are shown in table 1.
To avoid unbalance of dc bus capacitor voltages the dc bus is sprit to supply the individual phase voltages are VAn VBa VCn and line voltages are VAB VBC VAC common mode voltage is VNn