Table 3 Comparison of proposed 9L-inverter with conventional and other recent SCMLI topologies.
From: Experimental validation of new self-voltage balanced 9L-ANPC inverter for photovoltaic applications
Topologies | NSwitches | NSource | NCapacitors | VC,rating | NDiode | MBV Switches | TBVp.u | Additional capacitor balancing | Voltage boosting ability | Efficiency η% | Negative level |
|---|---|---|---|---|---|---|---|---|---|---|---|
NPC | 16 | 1 | 8 | Vin/4 | 56 | 16 | 4 Vin | Required | No | NA | Mid-point |
FC | 16 | 31 | Vin/4 | – | 16 | 4 Vin | Not required | No | NA | Mid-point | |
CHB | 16 | 4 | – | – | – | 16 | 4 Vin | – | No |  | H-Bridge |
Not required | NA | H-bridge | |||||||||
10 | 1 | 3 | Vin/2 | – | 4 | 6 Vin | Required | No | 92.3% | Inherent | |
12 | 4 | Vin/2 | – | 4 | 10 Vin | Required | No | 98.3% | Inherent | ||
12 | 3 | Vin/2 | – | 2 | 6 Vin | Required | No | NA | Mid-point | ||
9 | 2 | 2Vin | 1 | 4 | 24 Vin | Self-balancing | Yes | Â | H-bridge | ||
8 | 2 | 2Vin | 3 | 2 | 14 Vin |  > 93% | H-bridge | ||||
12 | 3 | 2 Vin | – | 2 | 24 Vin | 97.3% | Inherent | ||||
12 | 2 | Vin/2 | 1 | 10 | 12 Vin |  ~ 97.29% | Mid-point | ||||
11 | 2 | Vin/2 | 1 | 9 | 11 Vin | 96.8% | Inherent | ||||
15 | 4 | Vin/4 | 6 | 3 | 6 Vin | No | 93.3% | – | |||
16 | 6 | Vin | – | 2 | 20 Vin | Yes | NA | Mid-point | |||
Proposed | 9 | 8 | Vin/2 | 2 | 2 | 5.5Vin | 97.7% | Mid-point |
