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Mohamed. A. FARAHAT
Ahmed. S. A. HELMY


The objective of this paper is to improve the 3 phase shunt active power filter (SAPF) performance by using the fuzzy logic controller (FLC) for the DC voltage regulation and by evaluation the hysteresis band (HB) based on genetic algorithm (GA). SAPF is used to compensate harmonic and reactive currents which are generated by the non-linear loads in the distribution system. FLC is compared with the conventional proportional-integral (PI) controller to verify its positively effectiveness on the SAPF performance. Hysteresis current controller (HCC) method is used to derive the switching pulses according to HB value. MATLAB/SIMULINK environment is used to simulate the proposed system, SAPF was in compliance with IEEE-519 recommended harmonic std. SAPF achieved a low total harmonic distortion (THD) of the source current which demonstrated the importance of the presented methods.

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