Design and Analysis of a New Hybrid Three-Phase Multilevel Inverter with Improved Specifications

In this paper, a new three-phase circuit for multilevel inverters with symmetrical input sources is presented. The suggested inverter consists of three parts. The basic circuit, auxiliary circuit, and H-bridge are the components that make up the proposed circuit. For this reason, the suggested circuit is called a hybrid inverter. The reason for exploiting the auxiliary circuit and H-bridge is the low production voltage levels by the basic circuit. There are no capacitors and diodes in this circuit and it has a simple and cheap control system. To generate the multilevel output voltage in this inverter, the LS-PWM control method is utilized. The proposed circuit is compared in terms of the number of the utilized elements for the same number of levels, which are satisfactory comparison results. Finally, the simulation results in MATLAB/Simulink software are given to confirm the inverter performance.