Performance Evaluation of Shunt Active Power Filter for Aircraft System

In this paper, a three phase two level converter as a shunt active power filter (SAPF) is proposed to compensate the harmonics present in source current of the aircraft electric power system due to non-linear loads. DC Link voltage of the capacitor used in Voltage Source Converter is balanced by a PI controller. Conductance based Fryze current minimization algorithm is used as control scheme for determination of reference compensation of currents. Hysteresis Current Control (HCC) is employed for the switching of Voltage Source Converter. The simulations are carried out in Simulink/MATLAB in which the steady state as well as unbalance performance is demonstrated. In proposed active power filter, THD of supply current is found well within MIL-STD-704F as well as IEEE Std. 519.