Single-Phase Series Active Compensator Integrated with a Rectifier for Voltage Sags,Swells and Harmonics Mitigation

Abstract

A single-phase series active compensator is proposed to mitigate voltage sag, swell and voltage harmonics along with reducing harmonic currents at the AC mains. The DC link capacitor of the series active compensator is shared with a voltage fed load thus having a common DC link. The common DC link has an advantage of reduced component and immune to the wide variation in the voltage of AC mains, thus avoids the de-rating of the load. The proposed series active compensator provides the functions of mitigation of voltage sag/swell, voltage harmonics, current harmonics and regulating the DC link voltage. The injected voltage of the series active compensator to get AC sinusoidal current compensates the voltage harmonics. The performance of the proposed system having voltage harmonics and voltage sag at PCC. To describe system performance is reasonable under harmonics and voltage sag condition and maintaining The DC link voltage remains constant during voltage harmonics and sag condition.