UNIFIED POWER QUALITY CONDITIONER USING GENERALIZED FRYZE CONTROL STRATEGY

Hardik Jayeshkumar Padariya, Ch.V.Siva Kumar, Chandni Yogeshkumar Joshi

Abstract: The active power filter controller is based on the instantaneous power theory. And it can be classified in two groups. The first one is based on the transformation from abc phase to three-orthogonal axes, and other is based on directly from abc. In first method abc phases are converted into aß0 transformation and is called as p-q theory. In second method it deals with directly abc phase, so it is called as abc theory. In second theory current minimization method is used to apply in real time application. The second method is proposed as control strategy in this paper because it has some advantages over p-q theory. The shunt active power filter (APF) is used for current compensation and series active power filter is used for voltage compensation. The combination of both series and shunt active power is used to make Unified Power Quality Conditioner (UPQC). This has ability to eliminate voltage as well as current harmonics simultaneously. The matlab based simulation is done in this paper.

Keywords: Active filters, Instantaneous active and reactive power, Instantaneous power theory, generalized fryze theory, UPQC.

DOI: https://doi.org/10.15623/ijret.2014.0304103