Performance analysis and real-time implementation of shunt active filter Id-Iq control strategy with type-1 and type-2 FLC triangular M.F

This research article presents a novel approach based on an instantaneous active and reactive current component (id-iq) theory for generating reference currents for shunt active filter (SHAF). Three-phase reference current waveforms generated by proposed scheme are tracked by the three-phase voltage source converter in a hysteresis band control scheme. The performance of the proposed control strategy has been evaluated in terms of harmonic mitigation and DC link voltage regulation under various source conditions. In order to maintain DC link voltage constant and to generate the compensating reference currents, we have developed type-1 fuzzy logic controller (T1FLC) and type-2 FLC (T2FLC) triangular M.F. The SHAF with proposed type-1 and type-2 FLCs using triangular M.F is able to eliminate the uncertainty in the system. By using T2FLC triangular M.F, SHAF gains outstanding compensation abilities. The detailed simulation results using MATLAB/SIMULINK software are presented to support the feasibility of proposed control strategy. To validate the proposed approach, the system is also implemented on OPAL-RT (real-time) simulator, and adequate results are reported for its verifications. Copyright (C) 2012 John Wiley & Sons, Ltd.