Role: Thesis Co-Supervisor
Supervisor: Prof. Dr. Md. Fayzur Rahman, Professor & Treasurer | Department of EEE | GUB
Duration: March 2024 - Present
Responsibilities: Currently serving as a co-supervisor for undergraduate thesis students under the guidance of Prof. Dr. Md. Fayzur Rahman. Mentoring and guiding students in conducting research, developing research knowledge, and writing thesis manuscripts.
Undergraduate Thesis
Title: Harmonics Minimization of Symmetric and Asymmetric Multilevel Inverter Using Optimized LSF Modulation Technique
Supervisor:Â Prof. Dr. Md. Fayzur Rahman |Professor & Treasurer | Department of EEE | Green University of Bangladesh (GUB)
Abstract: The ever-increasing demand for efficient and reliable power conversion systems has led to significant advancements in multilevel inverter technology. Multilevel inverters offer numerous advantages, such as improved voltage waveform quality, reduced harmonic distortion, and increased power handling capacity. However, harmonic distortion remains a critical challenge in multilevel inverter systems, affecting their overall performance and efficiency. This thesis addresses the issue of harmonic distortion in both symmetric and asymmetric multilevel inverters using an innovative and optimized half-height method modulation scheme. The proposed modulation scheme aims to minimize harmonics and enhance the overall power quality of the inverter output. The research explores the design, analysis, and implementation of the optimized half-height method modulation scheme in both symmetric and asymmetric configurations of multilevel inverters. The first part of this thesis focuses on symmetric and asymmetric multilevel inverters, where a comprehensive analysis of the optimized half-height method modulation scheme is presented. The mathematical model and control strategy for the inverters are developed, taking into account the complexities of real-world power systems. Overall, this thesis contributes to the field of power electronics by providing an innovative approach to reducing harmonic distortion in both symmetric and asymmetric multilevel inverters. The proposed improved LSF modulation scheme offers an effective solution for enhancing power quality and achieving higher efficiency in various applications such as renewable energy integration, motor drives, and grid-connected systems. The outcomes of this research hold significant promise in advancing state-of- the-art multilevel inverter technology and pave the way for a more sustainable and reliable power conversion system. In the proposed inverter an amount of 16.39% of THD for symmetric configuration and 11.53% of THD for asymmetric configuration has been possible to achieve. The proposed Multilevel Inverter has been simulated through the software MATLAB Simulink.