Medium-Voltage Drives (MVD) - Performance Analysis of Seven-Level Cascaded H-Bridge Multilevel Driver

Abstract

The drawbacks of traditional inverters, particularly in high-power applications and medium voltage, have been highlighted in previous investigations. Due to the cascaded H-bridge multilevel driver (CHBMD) harmonic characteristics improved and power enhanced, inverters with multiple levels are increasingly popular for high-power applications. The scientific literature has documented works on multilevel inverter topologies, control strategies, and applications. Additionally, no conclusive results investigate or rate a three-phase multilevel inverter's effectiveness. The present investigation evaluates the performance of a multi-carrier sinusoidal pulse width modification (MCS-PWM) based, Seven-Level cascaded H-bridge multilevel driver (7LCHBMD). Performance assessments develop based on the outcomes of a modeling experiment on the CHBMD functionality utilizing MATLAB. The characteristics of the results chosen to perform the task were the harmonic range, waveform arrangement, and essential significance reducing the THD output of the 7LCHBMD. The MCS-PWM technique procedure from the perspective of the voltage line had been determined according to the findings of the simulation investigation and analysis carried out for the 7LCHBMD utilizing the PD-PWM as the control framework.