Power quality enhancement of the distribution system using hybrid filter

This paper presents the analysis, design and control of the hybrid active series and passive shunt power filter to enhance the quality of power in the distribution system. The proposed system consists of a three phase load commutated inverter fed synchronous motor (LCI-fed SM) drive, a SAF (Series Active Filter) and a passive shunt filter (PSF) at point of common coupling (PCC) for power quality enhancement in the distribution system. A PSF is designed to reduce the harmonics and to compensate the reactive power in the distribution system and a low rating SAF is used to force harmonics of all orders into this PSF of the three phase LCI-fed SM drive. The proposed system is modelled and its performance is simulated in MATLAB along with SPS toolbox to validate the design and control of the system.