Active Power Filter of Three-phase Based on Neural Network

This paper presents a novel control design of shunt active power filter to compensate reactive power and reduce the unwanted harmonics. A shunt active filter is realized employing three-phase voltage source inverter (VSI) and a control circuit. The shunt active filter acts as a current source, which is connected in parallel with a nonlinear load and controlled to generate the required compensation currents. The control circuit using neural network controller is proposed. One adaptive neural network (ANN) controller is designed to estimate the harmonic components of the distorted load current and supply voltage [1]. A power factor correction function is incorporated in the shunt active filter to achieve a power factor that is near to unity. The different cases are considered and then simulated in order to show validity of the active power filter with neural network control.