Augmentation of Power Quality by Total Harmonics Reduction and Power Factor Improvement in Wind Energy System using Seven Level Shunt Active Filter

This paper work concentrates on augmentation of power quality in wind energy system (WES) using 3-Phase, Seven Level -Shunt Active Filter (SL-SAF). In this surroundings, the permanent magnet synchronous generator (PMSG) based 3 kW WES is considered to implement SL-SAF. The main intention of this SL-SAF is to enhance the power quality in the proposed system, when WES output changes with the wind speed and also to the variation in load condition. Furthermore, it reduces the power loss during low wind velocity and also due to total harmonic distortions (THD) with improved power factor. In this work, the proposed system performance parameters like output voltage frequency and THD levels are analyzed for various wind velocities and unbalanced load conditions. In addition, the validity of SL-SAF is analyzed with the intelligent fuzzy logic based pulse width modulation techniques (FL-PWM). The MATLAB/Simulink modeling of proposed system is evaluated and the proportional results are used to authenticate the parameters of the SL-SAF converter. Keywords: Multi level inverter, Non-linear load, Shunt Active Filter (SAF), Total Harmonic Distortion (THD), Wind Energy System (WES).