Multicarrier PWM Control In Modular Multilevel Converter

Obiora, Valetine and Jamal, Wissam and Saha, Chitta and Goswami, Rajib and Ezzine, Mouadh and Ogu, Reginald (2024) Multicarrier PWM Control In Modular Multilevel Converter. In: 2024 IEEE International conference on electro-computing for sustainable development, 2024, 26th-28th November 2024, Ekiti, Nigeria. (In Press)

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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.

Item Type:	Conference or Workshop Item (Paper)
Dates:	Date Event 7 October 2024 Accepted
Uncontrolled Keywords:	Level-shifted PWM, MMC, Power Quality, THD, Voltage balancing.
Subjects:	CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-02 - mechanical engineering
Divisions:	Faculty of Computing, Engineering and the Built Environment > College of Engineering
Depositing User:	Gemma Tonks
Date Deposited:	13 Nov 2024 14:53
Last Modified:	13 Nov 2024 14:53
URI:	https://www.open-access.bcu.ac.uk/id/eprint/15960