Harmonic Suppression of Circulating Current in Multilevel Converters Using Pi-Fuzzy Controller

bandaru anji babu; gavarraju vinay raju

Harmonic Suppression of Circulating Current in Multilevel Converters Using Pi-Fuzzy Controller

Authors: bandaru anji babu, gavarraju vinay raju

Unique Paper ID: 148535
Volume: 6
Issue: 3
PageNo: 15-21

Keywords: No Keywords Found

Abstract:
In a modular multilevel converter (MMC), the interaction between switching actions and fluctuating capacitor voltages of the submodules 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 paper presents a plug-in repetitive control scheme with fuzzy logic controller is implemented to solve the problem. It combines the high dynamics of 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 threephase MMCs. Simulation and experimental results on a singlephase MMC inverter proved the validity of the proposed control method.

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Cite This Article

ISSN: 2349-6002
Volume: 6
Issue: 3
PageNo: 15-21

Harmonic Suppression of Circulating Current in Multilevel Converters Using Pi-Fuzzy Controller

Available:https://ijirt.org/Article?manuscript=148535

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UGC Approved
Journal no 47859

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