A 3-phase inverter operates with 180-degree conduction mode. It is fed from a 500 V DC source and is supplying a purely resistive Y connected load. RMS values of the fundamental component of line and phase voltage, respectively, at the inverter output, is:
1
408 V, 225.16 V
2
390 V, 235.56 V
3
408 V, 235.56 V
4
390 V, 225.16 V