A Novel Optimized Eleven Level Hybrid Cascaded Multi-Level Inverter

In recent years, Cascaded H-Bridge multilevel inverter is preferred in many of the industrial applications. Cascaded H-bridge multilevel inverter (MLI) topology became an incredibly main preference in the area of high power medium voltage control. In the conventional system, seven levels AC output voltage is obtained by using eight switches with appropriate gate signal design. The conventional system is controlled by the Sinusoidal Pulse Width Modulation (SPWM) technique. The proposed multilevel inverter generates eleven level AC output voltage with reduced number of switches. The control technique used here is Sinusoidal Pulse Width Modulation (SPWM) technique by TMS320LF2407 digital signal processor (DSP). The main advantage of this technique is reduced harmonic distortion, reduced number of switching power devices and decreased switching losses. The voltage stress in the power devices can be reduced in the proposed system. The conventional multilevel inverter (MLI) and proposed Modified Cascaded H Bridge Multi Level Inverter (MCHBMLI) are simulated to compare their Total Harmonic Distortion.