The improvement of power quality in a mono-phase system through a single-phase active filter using MATLAB/simulink

The paper deals with the single-phase active filtering used for reducing the harmonic level and electromagnetic interference and to get compliance with the power quality standards. The active filtering in case of a single-phase rectifier is based on a single-phase active filter and a complete current control system that uses pulse-width modulation (PWM) techniques. The power quality and the existing standards are discussed, including the disturbances in a power system for a single-phase rectifier. The harmonics, how they are generated, and what problems they may introduce in the power system, are presented. Some simulations concerning the behavior of a single-phase active filter in different situations are analyzed. The simulations performed in MATLAB/Simulink reveal a good agreement with the existing standards and validate the theoretical considerations.