Improved Power Quality with Active Shunt Power Filter Based on MPPT Firefly Controller of a Wind Turbine

This paper proposes an MPPT controller based on the Firefly algorithm applied to a wind energy conversion system (WECS) integrated with a shunt active power filter (SAPF) to solve power quality problems. Indeed, the current electrical distribution system involves the use of non-linear loads that cause quality problems in electrical power systems. In addition, the penetration of renewable energy sources, especially wind turbines, is increasing in the power grids to meet the ever-increasing energy demand. Thus, the studied system consists of a wind turbine based on a permanent magnet synchronous generator (PMSG), a rectifier, and a grid-connected three-phase voltage source inverter. The wind energy conversion system is controlled using the Firefly algorithm to track the maximum power point (MPPT) in the wind system. The dynamic performance of SAPF is optimized using the direct power control technique. These controllers aim to minimize total harmonic distortion (THD) produced by non-linear loads. Simulation results are provided to prove the effectiveness of the proposed system. The results show that the adopted control algorithms are effective in eliminating harmonic currents and injecting the available active power of the PMSG wind turbine into the load and/or power supply systems.