
19-6 Power Electronics and Motor Drives
used. However, these disadvantages may be acceptable in view of the quality of the output waveform
produced, which approaches closer to a sine wave.
19.3.3 Flying Capacitor Inverter
e third topology that has received attention in recent times and has been commercially produced is
the FC inverter [1–4]. A 4-level FC topology is shown in Figure 19.8. Similar to the CHB inverter, the FC
topology has a number of multiplicities for each space vector.
V
DC
/4
V
DC
/4
V
DC
/4
V
DC
/4
V
DC
/4
I.M.
V
DC
/4
+
–
+
–
+
–
+
–
+
–
+
–
FIGURE 19.7 Cascaded 5-level H-bridge inverter.
V
DC
V
DC
V
DC
V
DC
3333
I.M.
3
3
+
–
A B C
2V
DC
2V
DC
2V
DC
FIGURE 19.8 Four-level FC ...