Abstract

This paper presents the new control design or the unified power quality (PQ) conditioner (UPQC) for Power Quality improvement. The purpose of UPQC is to compensate for voltage sags/swells, load demand changes, power factor correction etc,. The control strategy employs a kalman filter to estimate the fundamental component as well as the harmonic components of the voltage and current. Simulation of the proposed method was carried out on a single- phase power distribution system and the results of simulation shows that the proposed method is able to provide the desirable power quality in the presence of a wide range of disturbances.

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