Comparison 5 Level Cascade H-bridge Multilevel Inverter Circuit with LC Filter and Without LC Filter

The 5-level Cascade H-bridge multilevel inverter has become an attractive choice in industrial applications and renewable power systems. The output wave quality produced by this multilevel inverter has an important role in ensuring optimal performance of the system. In this study, a performance comparison analysis was carried out between a 5-level Cascade H-bridge multilevel inverter with the use of an LC filter after the inverter and a configuration without an LC filter. The simulation results show that the use of an LC filter after the inverter produces a purer output signal by reducing unwanted harmonic components. The inverter without LC filter has a THD of 28.99%, while with an LC filter the THD is 8%. The use of LC filters improves the quality of the output signal and the performance of a 5-level multilevel inverter.