Space vector modulation based 13-level cascaded multi-level inverter

The proposed topology significantly reduces the number of dc voltage sources, switches, IGBTs, and power diodes as the number of output voltage levels increases. To synthesize maximum levels at the output voltage, the proposed topology is optimized for various objectives, such as the minimization of the number of switches, gate driver circuits and capacitors, and blocking voltage on switches. This new type of converter is suitable for high voltage and high power applications. This multilevel inverter has ability to synthesize waveforms with better harmonics spectrum. In this project a study of 13-level inverter using less number of switches as compare to the technologies previously developed. MATLAB software is used for simulate the 13-level inverter. Also a comparison analysis is carried out for symmetrical and asymmetrical multi-level inverter with open loop as well as closed loop using PI controller. The simulation was carried out using MATLAB/Simulink. The simulation study demonstrates the merits of asymmetrical multi-level inverter over symmetrical multi-level inverter and also proves the effectiveness of closed loop PI controller in providing an output voltage with reduced distortions.