Investigative uses of overmodulation techniques in modular multilevel cascaded converter

Sinusoidal pulse width modulation (SPWM) is a method to generate the switching gate of converter. Overmodulation where index exceeds unity value and system goes into nonlinear region. To maintain in linear region when operating overmodulation region, some techniques are developed. These helped operate range. Medium high-power energy conversion systems mostly use modular multilevel cascaded converter (MMCC), which has been an issue improving significantly recent years. In this article, MMCC-based compared with conventional PWM analyzed on DC bus utilization (DBU), total harmonic distortion (THD). MATLAB/Simulink digital platform used demonstrate technique.