Abstract
Abstract— This paper explores the design and analysis of a Modular Multilevel Converter (MMC) with a focus on Multicarrier Pulse Width Modulation (PWM) and capacitor voltage balancing techniques. The study aimed to evaluate the impact of these techniques on power quality indices, specifically harmonics, within the converter. Using MATLAB/Simulink, a three-phase MMC was simulated to generate 3-level, 5-level, and 7-level voltages, assessing the effectiveness of the proposed voltage balancing and modulation methods. The results demonstrated that as the voltage levels increased, Total Harmonic Distortion (THD) decreased, confirming the efficacy of the proposed approach in improving power quality. Furthermore, the study connected a dynamic load, represented by a three-phase induction motor, to the MMC. The findings indicated that the modified Multicarrier PWM and voltage balancing techniques achieved the primary control objectives, ensuring system stability and effective motor performance. Despite these successes, the complexities inherent in MMC control suggest that further research could explore traditional control methods, such as optimal or nonlinear control, to enhance system reliability and performance.
Keywords—Level-shifted PWM, MMC, Power Quality, THD, Voltage balancing.
Keywords—Level-shifted PWM, MMC, Power Quality, THD, Voltage balancing.
| Original language | English |
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| Title of host publication | 2024 IEEE International conference on electro-computing for sustainable development, 2024 |
| Publisher | IEEE |
| Publication status | Published (VoR) - 2024 |