Active Disturbance Rejection Control of Shunt Active Power Filter Based on P-Q Theory

Abstract

Active filtering has been known as a promising solution for the compensation of reactive currents and harmonics in the grid energy quality. The present paper introduces a novel control algorithm for the detection of reference harmonic currents applied to a Shunt Active Power Filter (SAPF), where the calculation of the references currents is achieved by the instantaneous active and reactive power theories (p-q), and the control of the DC bus voltage is achieved using the active disturbance rejection control. The MATLAB–SIMULINK environment is used to evaluate the theoretical study and to compare the results of the new control strategy with the one obtained by the classical PI controller.