Evaluation of Optimal Switching of Modular Multilevel Inverter with Independent Voltage Sources

2020 IEEE 61st International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON 2020): Conference Proceedings 2020
Aleksandrs Bubovičs, Iļja Galkins

This paper deals with the problem of the defining optimal switching times in modular multilevel converters (MMC) with independent voltage sources, if no pulse width modulation (PWM) technique is used. By using MATLAB Simulink modulation several schematics were analyzed (starting from 3 level MMC till 15 level MMC) with different module switching patterns. Different switching patterns of modules of MMC are compared by one parameter – total harmonic distortion (THD) of the output voltage waveform. Mathematical background of calculation of optimal switching times is also presented.

Keywords
Modular multilevel converters, DC-AC power converters, circuit simulation, total harmonic distortion
DOI
10.1109/RTUCON51174.2020.9316581
Hyperlink
https://ieeexplore.ieee.org/document/9316581

Bubovičs, A., Galkins, I. Evaluation of Optimal Switching of Modular Multilevel Inverter with Independent Voltage Sources. In: 2020 IEEE 61st International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON 2020): Conference Proceedings, Latvia, Riga, 5-7 November, 2020. Piscataway: IEEE, 2020, pp.541-544. ISBN 978-1-7281-9511-7. e-ISBN 978-1-7281-9510-0. Available from: doi:10.1109/RTUCON51174.2020.9316581

Publication language
English (en)