Type-1 and Type-2 Fuzzy logic controller based Shunt active filter Id-Iq control strategy for mitigation of harmonics with Triangular membership function

This research article proposes the shunt active filter (SHAF), which is used to improve the power quality of the electrical network by mitigating the harmonics with the help of Type-1 and Type-2 Fuzzy logic controller (Type-1 and Type-2 FLC) Triangular membership function (M.F). To carry out this analysis, active and reactive current (I_d-I_q) control strategy is chosen. The proposed SHAF is able to eliminate the uncertainty in the system with the help of Type-2 FLC Triangular M.F. 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 FLC and Type-2 FLC with Triangular fuzzy membership (M.F). The SHAF with proposed Type-2 FLC using Triangular M.F is able to eliminate the uncertainty in the system and SHAF gains outstanding compensation abilities.