Analysis of Performance for Multilevel Inverters Utilizing Different Pulse Width Modulation Techniques
Vijayakumar Madhaiyan, R. Murugesan, Senthilkumar Sengottaiyan, Vijayakumar Muniyan, Arun Vijayakumar, Prabhu Sundaramoorthy
Abstract
In this article, a novel PWM approach is introduced for improving the output voltage quality of a Binary Source Seven-Level Inverter (BSSLI) topology. The proposed method involves the application of restructured Sinusoidal Pulse Width Modulation (PWM) techniques. Additionally, a comparative analysis between traditional sinusoidal PWM and the restructured sinusoidal PWM techniques is presented. The primary goal of the restructured sinusoidal PWM techniques is to enhance the overall quality of the output voltage. This is achieved through the implementation of two PWM methods: Phase Disposition (PD) and Alternate Phase Opposition Disposition (APOD). To evaluate the performance of these techniques, various modulation indices are considered, and performance metrics such as Total Harmonic Distortion (THD) and Fundamental Vrms are measured. Simulations for this study are conducted using MATLAB-SIMULINK. The results indicate that the restructured sinusoidal PWM methodology, specifically employing the APOD approach, effectively reduces THD and provides a higher fundamental RMS output voltage.