Performance Evaluation of Fuzzy-IRP Controlled Shunt-APF for Power-Quality Improvement

Electrical Engineering

In this work, the proposed shunt active filter is used for compensating harmonic current distortions, reactive-power control, load balancing and power-factor correction, etc in a three-phase distribution system without use of additional devices. The performance of proposed shunt active power filter is verified for compensating the harmonics and enhancing the PQ issues by using Instantaneous Real-Power (IRP) theory. Additionally, regulation of DC capacitor voltage at a desired level using a PI controller is not suitable for enhanced PQ features. But, this controller is unpopular due to tuning issues of current controller; the above-mentioned issues are regulated by using novel intelligent based Fuzzy-Logic controller achieving good performance features. This work compares the performance of SAPF with classical PI and intelligent Fuzzy-Logic controller in PQ enhancement. The proposed Fuzzy controlled SAPF provides compensates all current-related disturbances like current harmonics, reactive power control, power-factor correction, unbalanced current and reduction in Total Harmonic Distortion, so on. The performance of proposed SAPF is verified in balanced non-linear loads by using classical PI and proposed Intelligent Fuzzy controller based IRP for attaining good compensation features. The proposed system is verified by using Matlab/Simulink tool; results are presented.

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