Optimal battery usage and harmonic reduction in swapped Cascaded Multilevel Inverter

This paper presents swapping of single-phase Cascaded Multilevel Inverter that uses four cascaded H-bridge power cells to optimize the usage of batteries or solar cells. Swapping of H-bridge inverters involves phase switching between the H-bridges. This method balances the battery utilization time in each cell which has been developed and simulated. The analysis of the total run-time of the batteries and battery discharge are worked out and the results are compared with conventional Cascaded H-bridge (CHB) inverters. The harmonics due to switching devices is reduced by using selective harmonic elimination method (SHE). Simulation results prove that the battery consumption level is less and it is about 60% efficient. The proposed inverter configuration will provide comparatively low power loss while comparing with other conventional inverters with the same output quality.