Research Article
THD Reduction of Improved Single Source MLI Using Upgraded Black Widow Optimization Algorithm
Table 1
Switching states of reduced cascaded MLI power devices.
| | Switching state for the 15-level reduced MLI | | Switches | Vo1 | Vo2 | Vo2 + Vo1 | Vo3 | Vo1 + Vo3 | Vo2 + Vo3 | Vo1 + Vo2 + Vo3 | -Vo1 | -Vo2 | -(Vo2 + Vo1) | -Vo3 | -(Vo1 + Vo3) | -(Vo2 + Vo3) | -(Vo1 + Vo2 + Vo3) |
| | S1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | S2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | S3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | S4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | S11 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | | S12 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | | S13 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | | S21 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | | S22 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | | S23 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 |
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“0” implies to turn off state and “1” implies to turn on state of a particular switch.
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