Load compensation with hysteresis current controlled SAPF under unbalanced mains voltage and nonlinear load conditions

The Shunt Active Power Filter (SAPF) plays a major role in field of load compensation for mitigating harmonics, load balancing and reactive power compensation in distribution power network. This paper represents a Shunt Active Power Filter for the compensation of load under unbalanced mains voltage and nonlinear mixed load conditions in distribution power network. The described shunt active power filter is used to achieve reactive power compensation, neutral current reduction as well as to achieve the unity power factor. An instantaneous symmetrical components theory has been used to generate reference current for power electronic switches. A five level diode clamped voltage source converter (VSI) based shunt active power filter has been utilized for the load compensation. A hysteresis current controller has been adapted for VSI based SAPF. The system performance has been investigated using MATLAB/SIMULINK simulation tool with and results show that supremacy of the SAPF on load compensation.