Table 1 Comparisons of component necessities per leg of three multilevel converters
Type of MLI | No. of DC source | DC-bus capacitors | No. of switches | Clamping capacitors | Clamping diodes |
|---|---|---|---|---|---|
Diode clamped | 1 | m − 1 | (m − 1)*2 | 0 | (m − 1)*(m − 2) |
Flying capacitor | 1 | m − 1 | (m − 1)*2 | (m − 1)*(m − 2)/2 | 0 |
Cascaded H-bridge | m − 1/2 | – | (m − 1)*2 | 0 | 0 |