Power Quality Improvement Using Fryze Current Minimization Technique in a Grid Integrated Wind-PV System

To protect a grid integrated system from power quality related issues and to recover its steady state operation even under dynamic conditions, a fast responding control is required. So, this paper presents efficient and reliable Fryze current minimization technique based three phase shunt active power filter (SAPF) for power quality enhancement in grid integrated wind-PV system. The SAPF system is used for harmonics compensation due to non-linear loads. To achieve precised level compensation, sliding mode controller (SMC) is also used here to reduce the error in reference current generated. Voltage source inverter based SAPF gate control switching signals are brought out from hysteresis current controller (HCC). The SAPF based system is investigated using MATLAB/simulink platform and the performance parameters are acquired under steady state and transient conditions. A comparative assessment of synchronous reference frame theory (SRFT) and instantaneous reactive power theory (IRPT) are carried out in MATLAB/simulink to validate proposed control method.