11 level multilevel inverter project, matlab code, matlab simulation output, mdl download

In the off grid application a new approach for selective harmonic elimination in a 11-level cascaded multilevel inverter with separate DC sources are being studied. The DC sources feeding the multilevel inverter are considered to be varying in time. This method uses genetic algorithms to obtain switching angles offline for different DC source values and uses neural networks to determine the switching angles that correspond to the real-time values of the DC sources for each phase. This implies that each one of the DC sources of this topology can have different values at any time but the output fundamental voltage will stay constant and the harmonic content will still meet the specifications. The switching angles are updated at each cycle of the output fundamental voltage.

A grid tied application is being studied with focus on a single-phase 11-level (5 H-bridges) cascade multilevel DC-AC grid-tied inverter

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