Abstract
This work proposes fuzzy logic controller (FLC) for seven-level modular multilevel converter (SLMMC)-based shunt active power filter (SAPF) to reduce harmonics in source current. Half-bridge submodule is proposed for SLMMC due to its simple configuration and low conduction losses. An instantaneous real and reactive power (IPQ) method is proposed to extract reference currents. The multicarrier-based in-phase disposition (IPD) pulse width modulation method is proposed to control the switches in efficient approach. The performance of FLC in SLMMC and seven-level cascade H-bridge SAPF is verified in terms of harmonic reduction under nonlinear loads. The capacitor voltage balancing is achieved using the proposed FLC. The proposed work is simulated using MATLAB/Simulink software package.
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