A new method for harmonic and reactive power compensation

This paper presents a method for the harmonic and reactive power compensation with an adaptive hysteresis band current controller and a control algorithm for active power filter (APF) to eliminate the harmonics and compensate the reactive power in three-phase thyristor bridge rectifier. The adaptive hysteresis band current controller is adapted to the active power filter (APF). And it can change the hysteresis bandwidth according to modulation frequency, supply voltage, dc capacitor voltage and slope of the iC* reference compensator current wave. Until now, all of the studies have been carried out through detail digital dynamic simulation with the MATLAB Simulink Power System Toolbox. The results of simulation study of the new APF control technique and algorithm presented in this paper is found quite satisfactory in eliminating harmonics and reactive power components in utility current.