Dual Phase Analysis Based Harmonic Elimination in Multilevel Inverters

In this paper Dual Phase Analysis based harmonic elimination technique is proposed for eliminating selected harmonics present in the multilevel inverters. Elimination of harmonics is done by considering equal DC sources. The switching angles are calculated using Artificial Neural Network. As an example, nine level inverters are considered and simulated using the switching angles obtained from the optimization technique for non linear loads. The simulation results validate the effectiveness of the method in eliminating selected harmonics present in the inverter circuit.