A Boost Switched-Capacitor Multilevel Inverter Using Quasi-Resonant Inductor

Through this paper, a novel multilevel inverter (MLI) is proposed. The suggested topology composed of switch- capacitor quasi-resonance boosted module (SCQRB) and H-bridge. Each module exploits only one DC voltage source, which is mentioned as one of the superiorities of the proposed topology. Also, in this topology, quasi-resonant inductors are utilized to suppress the spikes on the charging current of capacitors. The suggested MLI generates a 9-level voltage waveform in the output. Besides, to reach higher voltage levels, more SCQRB with H-bridge units could be cascaded. Also, in the suggested MLI, the capacitors are kept stable without any sophisticated control system, which is one of the great privileges of the suggested inverter. Furthermore, the merit and superiority of the presented MLI are illustrated by a comprehensive comparison among the number of elements such as capacitors and power switches. Since the suggested topology can increase the value of voltage, the voltage gain is another factor of comparison. Moreover, to show the feasibility and availability of the designed inverter, the MATLAB/Simulink environment is used to simulate a case-study circuit.