Suppression of Harmonics of Circulating Currents in Modular Multilevel Converters using Neuro-Fuzzy Repetitive Control Scheme

Mr. B Yella Reddy; Kandula Mahesh

Suppression of Harmonics of Circulating Currents in Modular Multilevel Converters using Neuro-Fuzzy Repetitive Control Scheme

Authors: Mr. B Yella Reddy, Kandula Mahesh

Unique Paper ID: 149015
Volume: 6
Issue: 9
PageNo: 158-163

Keywords: No Keywords Found

Abstract:
In a modular multilevel converter (MMC), the interaction between switching actions and fluctuating capacitor voltages of the sub modules results in second- and other even-order harmonics in the circulating currents. These harmonic currents will introduce extra power loss, increase current stress of power devices, and even cause instability during transients. Traditional methods for circulating current harmonic suppression have problems such as limited harmonic rejection capability, limited application area, and complex implementation. This thesis presents a plug-in repetitive control scheme with neuro-fuzzy logic controller is implemented to solve the problem. It combines the high dynamics of neural network and fuzzy controller and good steady-state harmonic suppression of the repetitive controller, and minimizes the interference between the two controllers. It is suitable for multiple harmonic suppression, easy to implement, and applicable for both single-phase and three phase MMCs. Simulation and experimental results on a single phase MMC inverter proved the validity of the proposed control method.

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Cite This Article

ISSN: 2349-6002
Volume: 6
Issue: 9
PageNo: 158-163

Suppression of Harmonics of Circulating Currents in Modular Multilevel Converters using Neuro-Fuzzy Repetitive Control Scheme

Available:https://ijirt.org/Article?manuscript=149015

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