Harmonic and power factor compensation using WRIM based on sliding mode controller

Abstract

This paper proposes an APF (active power filter) with WRIM (wound rounded induction motor) controlled by sliding mode which can compensate harmonic currents generated in a power system. As nonlinear loads increase gradually in industry fields, harmonic current generated in the electric power network system also increases. Harmonic current makes a power network current distorted and generates heat, vibration and noise in the power machinery. Many approaches have been applied to compensate harmonic currents generated in the power system. Among various control strategies, in this paper, a sliding mode controlled system is designed and evaluated. A robust control is realized and implemented. This is a flywheel compensator based on secondary excitation of WRIM (wound rotor induction motor) with SMC (sliding mode controller). The proposed system uses a flywheel as an energy storage device. The designed control scheme is verified through simulation.