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
SwitchesVo1Vo2Vo2 + Vo1Vo3Vo1 + Vo3Vo2 + Vo3Vo1 + Vo2 + Vo3-Vo1-Vo2-(Vo2 + Vo1)-Vo3-(Vo1 + Vo3)-(Vo2 + Vo3)-(Vo1 + Vo2 + Vo3)

S111111110000000
S211111110000000
S300000001111111
S400000001111111
S1100011110001111
S1201100110110011
S1310101011010101
S2111100001110000
S2210011001001100
S2301010100101010

“0” implies to turn off state and “1” implies to turn on state of a particular switch.