A neutral$-$point clamp $($NPC$)7-$level three$-$phase inverter is fed by $7200$V DC$.$The inverter feeds a load at $400$Hz fundamental frequency and $50$A peak per phase. The neutral pointis tied to the mid$-$point of the DC bus capacitors. IGBTs are used as switching devices and comewith inherent anti$-$parallel diodes, and necessary diodes are placed as needed. Use one phase of the three phases as your reference to simplify your analysis.

a$.$Determine the number capacitors needed to split the DC bus voltage, as well as each switch and diode voltage rating. Draw one phase of the inverter and label each of the devices$$voltage and current ratings on the schematic.