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Designing a Novel 31-Level Asymmetrical Multilevel Inverter Topology with Comparative Analysis

AC power devices are needed in various industrial, commercial, and residential sectors. A multilevel inverter can get smooth AC power from DC. In this study, the topology of a novel 31-level asymmetrical multilevel inverter (MLI) has been proposed. The biggest advantage of this proposed new asymmetrical MLI topology is that its total harmonic distortion (THD) is much lower without any type of controller. In this topology, a lower number of switches and other components have been used. To design this novel 31-level asymmetrical MLI, twelve IGBT switches, and four asymmetrical voltage sources (2:4:8:16) have been used which resulted in 31 levels of output voltages. The pulse width modulation (PWM) technique is used to generate triggering pulses in the switches. Simulation and performance analysis of the proposed new asymmetric MLI has been performed by the MATLAB-Simulink platform. The precision of work of the inverter can be understood through the simulation results.