Single-phase series active compensator integrated with a rectifier for voltage sags, swells and harmonics mitigation

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 derating 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.